Older adults need another COVID-19 vaccine

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What you need to know 

  • The CDC recommends people 65 and older and immunocompromised people receive an additional dose of the updated COVID-19 vaccine this spring—if at least four months have passed since they received a COVID-19 vaccine.
  • Updated COVID-19 vaccines are effective at protecting against severe illness, hospitalization, death, and long COVID.
  • The CDC also shortened the isolation period for people who are sick with COVID-19.

Last week, the CDC said people 65 and older should receive an additional dose of the updated COVID-19 vaccine this spring. The recommendation also applies to immunocompromised people, who were already eligible for an additional dose.

Older adults made up two-thirds of COVID-19-related hospitalizations between October 2023 and January 2024, so enhancing protection for this group is critical.

The CDC also shortened the isolation period for people who are sick with COVID-19, although the contagiousness of COVID-19 has not changed.

Read on to learn more about the CDC’s updated vaccination and isolation recommendations.

Who is eligible for another COVID-19 vaccine this spring?

The CDC recommends that people ages 65 and older and immunocompromised people receive an additional dose of the updated COVID-19 vaccine this spring—if at least four months have passed since they received a COVID-19 vaccine. It’s safe to receive an updated COVID-19 vaccine from Pfizer, Moderna, or Novavax, regardless of which COVID-19 vaccines you received in the past.

Updated COVID-19 vaccines are available at pharmacies, local clinics, or doctor’s offices. Visit Vaccines.gov to find an appointment near you.

Under- and uninsured adults can get the updated COVID-19 vaccine for free through the CDC’s Bridge Access Program. If you’re over 60 and unable to leave your home, call the Aging Network at 1-800-677-1116 to learn about free at-home vaccination options.

What are the benefits of staying up to date on COVID-19 vaccines?

Staying up to date on COVID-19 vaccines prevents severe illness, hospitalization, death, and long COVID.

Additionally, the CDC says staying up to date on COVID-19 vaccines is a safer and more reliable way to build protection against COVID-19 than getting sick from COVID-19.

What are the new COVID-19 isolation guidelines?

According to the CDC’s general respiratory virus guidance, people who are sick with COVID-19 or another common respiratory illness, like the flu or RSV, should isolate until they’ve been fever-free for at least 24 hours without the use of fever-reducing medication and their symptoms improve.

After that, the CDC recommends taking additional precautions for the next five days: wearing a well-fitting mask, limiting close contact with others, and improving ventilation in your home if you live with others. 

If you’re sick with COVID-19, you can infect others for five to 12 days, or longer. Moderately or severely immunocompromised patients may remain infectious beyond 20 days.

For more information, talk to your health care provider.

This article first appeared on Public Good News and is republished here under a Creative Commons license.

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  • What you need to know about menopause

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    Menopause describes the time when a person with ovaries has gone one full year without a menstrual period. Reaching this phase is a natural aging process that marks the end of reproductive years.

    Read on to learn more about the causes, stages, signs, and management of menopause.

    What causes menopause?

    As you age, your ovaries begin making less estrogen and progesterone—two of the hormones involved in menstruation—and your fertility declines, causing menopause.

    Most people begin perimenopause, the transitional time that ends in menopause, in their late 40s, but it can start earlier. On average, people in the U.S. experience menopause in their early 50s.

    Your body may reach early menopause for a variety of reasons, including having an oophorectomy, a surgery that removes the ovaries. In this case, the hormonal changes happen abruptly rather than gradually.

    Chemotherapy and radiation therapy for cancer patients may also induce menopause, as these treatments may impact ovary function.

    What are the stages of menopause?

    There are three stages:

    • Perimenopause typically occurs eight to 10 years before menopause happens. During this stage, estrogen production begins to decline and ovaries release eggs less frequently.
    • Menopause marks the point when you have gone 12 consecutive months without a menstrual period. This means the ovaries have stopped releasing eggs and producing estrogen.
    • Postmenopause describes the time after menopause. Once your body reaches this phase, it remains there for the rest of your life.

    How do the stages of menopause affect fertility?

    Your ovaries still produce eggs during perimenopause, so it is still possible to get pregnant during that stage. If you do not wish to become pregnant, continue using your preferred form of birth control throughout perimenopause.

    Once you’ve reached menopause, you can no longer get pregnant naturally. People who would like to become pregnant after that may pursue in vitro fertilization (IVF) using eggs that were frozen earlier in life or donor eggs.

    What are the signs of menopause?

    Hormonal shifts result in a number of bodily changes. Signs you are approaching menopause may include:

    • Hot flashes (a sudden feeling of warmth).
    • Irregular menstrual periods, or unusually heavy or light menstrual periods.
    • Night sweats and/or cold flashes.
    • Insomnia.
    • Slowed metabolism.
    • Irritability, mood swings, and depression.
    • Vaginal dryness.
    • Changes in libido.
    • Dry skin, eyes, and/or mouth.
    • Worsening of premenstrual syndrome (PMS).
    • Urinary urgency (a sudden need to urinate).
    • Brain fog.

    How can I manage the effects of menopause?

    You may not need any treatment to manage the effects of menopause. However, if the effects are disrupting your life, your doctor may prescribe hormone therapy.

    If you have had a hysterectomy, your doctor may prescribe estrogen therapy (ET), which may be administered via a pill, patch, cream, spray, or vaginal ring. If you still have a uterus, your doctor may prescribe estrogen progesterone/progestin hormone therapy (EPT), which is sometimes called “combination therapy.”

    Both of these therapies work by replacing the hormones your body has stopped making, which can reduce the physical and mental effects of menopause.

    Other treatment options may include antidepressants, which can help manage mood swings and hot flashes; prescription creams to alleviate vaginal dryness; or gabapentin, an anti-seizure medication that has been shown to reduce hot flashes.

    Lifestyle changes may help alleviate the effects on their own or in combination with prescription medication. Those changes include:

    • Incorporating movement into your daily life.
    • Limiting caffeine and alcohol.
    • Quitting smoking.
    • Maintaining a regular sleep schedule.
    • Practicing relaxation techniques, such as meditation.
    • Consuming foods rich in plant estrogens, such as grains, beans, fruits, vegetables, and seeds.
    • Seeking support from a therapist and from loved ones.

    What health risks are associated with menopause?

    Having lower levels of estrogen may put you at greater risk of certain health complications, including osteoporosis and coronary artery disease.

    Osteoporosis occurs when bones lose their density, increasing the risk of fractures. A 2022 study found that the prevalence of osteoporotic fractures in postmenopausal women was 82.2 percent.

    Coronary artery disease occurs when the arteries that send blood to your heart become narrow or blocked with fatty plaque.

    Estrogen therapy can reduce your risk of osteoporosis and coronary artery disease by preserving bone mass and maintaining cardiovascular function.

    For more information, talk to your health care provider.

    This article first appeared on Public Good News and is republished here under a Creative Commons license.

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  • Men have a biological clock too. Here’s what’s more likely when dads are over 50

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    We hear a lot about women’s biological clock and how age affects the chance of pregnancy.

    New research shows men’s fertility is also affected by age. When dads are over 50, the risk of pregnancy complications increases.

    Data from more than 46 million births in the United States between 2011 and 2022 compared fathers in their 30s with fathers in their 50s.

    While taking into account the age of the mother and other factors known to affect pregnancy outcomes, the researchers found every ten-year increase in paternal age was linked to more complications.

    The researchers found that compared to couples where the father was aged 30–39, for couples where the dad was in his 50s, there was a:

    • 16% increased risk of preterm birth
    • 14% increased risk of low birth weight
    • 13% increase in gestational diabetes.

    The older fathers were also twice as likely to have used assisted reproductive technology, including IVF, to conceive than their younger counterparts.

    Steven van Loy/Unsplash

    Dads are getting older

    In this US study, the mean age of all fathers increased from 30.8 years in 2011 to 32.1 years in 2022.

    In that same period, the proportion of men aged 50 years or older fathering a child increased from 1.1% to 1.3%.

    We don’t know the proportion of men over 50 years who father children in Australia, but data shows the average age of fathers has increased.

    In 1975 the median age of Australian dads was 28.6 years. This jumped to 33.7 years in 2022.

    How male age affects getting pregnant

    As we know from media reports of celebrity dads, men produce sperm from puberty throughout life and can father children well into old age.

    However, there is a noticeable decline in sperm quality from about age 40.

    Female partners of older men take longer to achieve pregnancy than those with younger partners.

    A study of the effect of male age on time to pregnancy showed women with male partners aged 45 or older were almost five times more likely to take more than a year to conceive compared to those with partners aged 25 or under. More than three quarters (76.8%) of men under the age of 25 years impregnated their female partners within six months, compared with just over half (52.9%) of men over the age of 45.

    Pooled data from ten studies showed that partners of older men are also more likely to experience miscarriage. Compared to couples where the male was aged 25 to 29 years, paternal age over 45 years increased the risk of miscarriage by 43%.

    Older men are more likely to need IVF

    Outcomes of assisted reproductive technology, such as IVF, are also influenced by the age of the male partner.

    A review of studies in couples using assisted reproductive technologies found paternal age under 40 years reduced the risk of miscarriage by about 25% compared to couples with men aged over 40.

    Having a male under 40 years also almost doubled the chance of a live birth per treatment cycle. With a man over 40, 17.6% of treatment rounds resulted in a live birth, compared to 28.4% when the male was under 40.

    How does male age affect the health outcomes of children?

    As a result of age-related changes in sperm DNA, the children of older fathers have increased risk of a number of conditions. Autism, schizophrenia, bipolar disorders and leukaemia have been linked to the father’s advanced years.

    A review of studies assessing the impact of advanced paternal age reported that children of older fathers have increased rates of psychiatric disease and behavioural impairments.

    But while the increased risk of adverse health outcomes linked to older paternal age is real, the magnitude of the effect is modest. It’s important to remember that an increase in a very small risk is still a small risk and most children of older fathers are born healthy and develop well.

    Improving your health can improve your fertility

    In addition to the effects of older age, some chronic conditions that affect fertility and reproductive outcomes become more common as men get older. They include obesity and diabetes which affect sperm quality by lowering testosterone levels.

    While we can’t change our age, some lifestyle factors that increase the risk of pregnancy complications and reduce fertility, can be tackled. They include:

    Get the facts about the male biological clock

    Research shows men want children as much as women do. And most men want at least two children.

    Yet most men lack knowledge about the limitations of female and male fertility and overestimate the chance of getting pregnant, with and without assisted reproductive technologies.

    We need better public education, starting at school, to improve awareness of the impact of male and female age on reproductive outcomes and help people have healthy babies.

    For men wanting to improve their chance of conceiving, the government-funded sites Healthy Male and Your Fertility are a good place to start. These offer evidence-based and accessible information about reproductive health, and tips to improve your reproductive health and give your children the best start in life.

    Karin Hammarberg, Senior Research Fellow, Global and Women’s Health, School of Public Health & Preventive Medicine, Monash University

    This article is republished from The Conversation under a Creative Commons license. Read the original article.

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  • The Miracle of Flexibility – by Miranda Esmonde-White

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    We’ve reviewed books about stretching before, so what makes this one different?

    Mostly, it’s that this one takes a holistic approach, making the argument for looking after all parts of flexibility (even parts that might seem useless) because if one bit of us isn’t flexible, the others will start to suffer in compensation because of how that affects our posture, or movement, or in many cases our lack of movement.

    Esmonde-White’s “flexibility, from your toes to your shoulders” approach is very consistent with her background as a professional ballet dancer, and now she brings it into her profession as a coach.

    The book’s not just about stretching, though. It looks at problems and what can go wrong with posture and the body’s “musculoskeletal trifecta”, and also shares daily training routines that are tailored for specific sporting interests, and/or for those with specific chronic conditions and/or chronic pain. Working around what needs to be worked around, but also looking at strengthening what can be strengthened and fixing what can be fixed along the way.

    Bottom line: if your flexibility needs an overhaul, this book is a very good “one-stop shop” for that.

    Click here to check out The Miracle Of Flexibility, and discover what you can do!

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  • The End of Food Allergy – by Dr. Kari Nadeau & Sloan Barnett

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    We don’t usually mention author credentials beyond their occupation/title. However, in this case it bears acknowledging at least the first line of the author bio:

    ❝Kari Nadeau, MD, PhD, is the director of the Sean N. Parker Center for Allergy and Asthma Research at Stanford University and is one of the world’s leading experts on food allergy❞

    We mention this, because there’s a lot of quack medicine out there [in general, but especially] when it comes to things such as food allergies. So let’s be clear up front that Dr. Nadeau is actually a world-class professional at the top of her field.

    This book is, by the way, about true allergies—not intolerances or sensitivities. It does touch on those latter two, but it’s not the main meat of the book.

    In particular, most of the research cited is around peanut allergies, though the usual other common allergens are all discussed too.

    The authors’ writing style is that of a science educator (Dr. Nadeau’s co-author, Sloan Barnett, is lawyer and health journalist). We get a clear explanation of the science from real-world to clinic and back again, and are left with a strong understanding, not just a conclusion.

    The titular “End of Food Allergy” is a bold implicit claim; does the book deliver? Yes, actually.

    The book lays out guidelines for safely avoiding food allergies developing in infants, and yes, really, how to reverse them in adults. But…

    Big caveat:

    The solution for reversing severe food allergies (e.g. “someone nearby touched a peanut three hours ago and now I’m in anaphylactic shock”), drug-assisted oral immunotherapy, takes 6–24 months of weekly several-hour-long clinic visits, relies on having a nearby clinic offering the service, and absolutely 100% cannot be done at home (on pain of probable death).

    Bottom line: it’s by no means a magic bullet, but yes, it does deliver.

    Click here to check out The End of Food Allergy to learn more!

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  • Constipation increases your risk of a heart attack, new study finds – and not just on the toilet

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    If you Google the terms “constipation” and “heart attack” it’s not long before the name Elvis Presley crops up. Elvis had a longstanding history of chronic constipation and it’s believed he was straining very hard to poo, which then led to a fatal heart attack.

    We don’t know what really happened to the so-called King of Rock “n” Roll back in 1977. There were likely several contributing factors to his death, and this theory is one of many.

    But after this famous case researchers took a strong interest in the link between constipation and the risk of a heart attack.

    This includes a recent study led by Australian researchers involving data from thousands of people.

    Elvis Presley was said to have died of a heart attack while straining on the toilet. But is that true? Kraft74/Shutterstock

    Are constipation and heart attacks linked?

    Large population studies show constipation is linked to an increased risk of heart attacks.

    For example, an Australian study involved more than 540,000 people over 60 in hospital for a range of conditions. It found constipated patients had a higher risk of high blood pressure, heart attacks and strokes compared to non-constipated patients of the same age.

    A Danish study of more than 900,000 people from hospitals and hospital outpatient clinics also found that people who were constipated had an increased risk of heart attacks and strokes.

    It was unclear, however, if this relationship between constipation and an increased risk of heart attacks and strokes would hold true for healthy people outside hospital.

    These Australian and Danish studies also did not factor in the effects of drugs used to treat high blood pressure (hypertension), which can make you constipated.

    Man sitting on toilet, clutching tummy with one hand, holding toilet roll in other
    Researchers have studied thousands of people to see if there’s a link between constipation and heart attacks. fongbeerredhot/Shutterstock

    How about this new study?

    The recent international study led by Monash University researchers found a connection between constipation and an increased risk of heart attacks, strokes and heart failure in a general population.

    The researchers analysed data from the UK Biobank, a database of health-related information from about half a million people in the United Kingdom.

    The researchers identified more than 23,000 cases of constipation and accounted for the effect of drugs to treat high blood pressure, which can lead to constipation.

    People with constipation (identified through medical records or via a questionnaire) were twice as likely to have a heart attack, stroke or heart failure as those without constipation.

    The researchers found a strong link between high blood pressure and constipation. Individuals with hypertension who were also constipated had a 34% increased risk of a major heart event compared to those with just hypertension.

    The study only looked at the data from people of European ancestry. However, there is good reason to believe the link between constipation and heart attacks applies to other populations.

    A Japanese study looked at more than 45,000 men and women in the general population. It found people passing a bowel motion once every two to three days had a higher risk of dying from heart disease compared with ones who passed at least one bowel motion a day.

    How might constipation cause a heart attack?

    Chronic constipation can lead to straining when passing a stool. This can result in laboured breathing and can lead to a rise in blood pressure.

    In one Japanese study including ten elderly people, blood pressure was high just before passing a bowel motion and continued to rise during the bowel motion. This increase in blood pressure lasted for an hour afterwards, a pattern not seen in younger Japanese people.

    One theory is that older people have stiffer blood vessels due to atherosclerosis (thickening or hardening of the arteries caused by a build-up of plaque) and other age-related changes. So their high blood pressure can persist for some time after straining. But the blood pressure of younger people returns quickly to normal as they have more elastic blood vessels.

    As blood pressure rises, the risk of heart disease increases. The risk of developing heart disease doubles when systolic blood pressure (the top number in your blood pressure reading) rises permanently by 20 mmHg (millimetres of mercury, a standard measure of blood pressure).

    The systolic blood pressure rise with straining in passing a stool has been reported to be as high as 70 mmHg. This rise is only temporary but with persistent straining in chronic constipation this could lead to an increased risk of heart attacks.

    Doctor wearing white coat checking patient's blood pressure
    High blood pressure from straining on the toilet can last after pooing, especially in older people. Andrey_Popov/Shutterstock

    Some people with chronic constipation may have an impaired function of their vagus nerve, which controls various bodily functions, including digestion, heart rate and breathing.

    This impaired function can result in abnormalities of heart rate and over-activation of the flight-fight response. This can, in turn, lead to elevated blood pressure.

    Another intriguing avenue of research examines the imbalance in gut bacteria in people with constipation.

    This imbalance, known as dysbiosis, can result in microbes and other substances leaking through the gut barrier into the bloodstream and triggering an immune response. This, in turn, can lead to low-grade inflammation in the blood circulation and arteries becoming stiffer, increasing the risk of a heart attack.

    This latest study also explored genetic links between constipation and heart disease. The researchers found shared genetic factors that underlie both constipation and heart disease.

    What can we do about this?

    Constipation affects around 19% of the global population aged 60 and older. So there is a substantial portion of the population at an increased risk of heart disease due to their bowel health.

    Managing chronic constipation through dietary changes (particularly increased dietary fibre), increased physical activity, ensuring adequate hydration and using medications, if necessary, are all important ways to help improve bowel function and reduce the risk of heart disease.

    Vincent Ho, Associate Professor and clinical academic gastroenterologist, Western Sydney University

    This article is republished from The Conversation under a Creative Commons license. Read the original article.

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  • We Are Such Stuff As Fish Are Made Of

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    Research Review: Collagen

    For something that’s a very popular supplement, not many people understand what collagen is, where it comes from, or what it does.

    In a nutshell:

    Collagen is a kind of protein. Our bodies make it naturally, and we can also get more in our diet and/or take extra as a supplement.

    Our bodies use collagen in connective tissue, skin, tendon, bone, and cartilage. It has many functions, but a broad description would be “holding things together”.

    As we get older, our bodies produce less collagen. Signs of this include wrinkles, loss of skin hydration, and joint pain.

    Quick test: pinch the skin on the middle of the back of one of your hands, and then watch what happens when you get low. How quickly and easily did your skin returns to its original shape?

    If it was pretty much instantanous and flawless, congratulations, you have plenty of collagen (and also elastin). If you didn’t, you are probably low on both!

    (they are quite similar proteins and are made from the same base “stuff”, so if you’re low on one, you’ll usually be low on both)

    Quick note: A lot of research out there has been funded by beauty companies, so we had our work cut out for us today, and have highlighted where any research may be biased.

    More than skin deep

    While marketing for collagen is almost exclusively aimed at “reduce wrinkles and other signs of aging”, it does a lot more than that.

    You remember we mentioned that many things from the bones outward are held together by collagen? We weren’t kidding…

    Read: Osteoporosis, like skin ageing, is caused by collagen loss which is reversible

    Taking extra collagen isn’t the only way

    We can’t (yet!) completely halt the age-related loss of collagen, but we can slow it, with our lifestyle choices:

    Can I get collagen from food?

    Yep! Just as collagen holds our bodies together, it holds the bodies of other animals together. And, just like collagen is found in most parts of our body but most plentifully in our skin and bones, that’s what to eat to get collagen from other animals, e.g:

    • Chicken skin
    • Fish skin
    • Bone broth ← health benefits and recipes at this link!

    What about vegans?

    Yes, vegans are also held together by collagen! We do not, however, recommend eating their skin or boiling their bones into broth. Ethical considerations aside, cannibalism can give you CJD!

    More seriously, if you’re vegan, you can’t get collagen from a plant-based diet, but you can get the stuff your body uses to make collagen. Basically, you want to make sure you get plenty of:

    Read: Diet and Dermatology: The Role of a Whole-food, Plant-based Diet in Preventing and Reversing Skin Aging

    Just be sure to continue to remember to avoid highly-processed foods. So:

    • Soy mince/chunks whose ingredients list reads: “soya”? Yes!
    • The Incredible Burger or Linda McCartney’s Sausages? Sadly less healthy

    Read: Advanced Glycation End Products in Foods and a Practical Guide to Their Reduction in the Diet

    Meat-eaters might want to read that one too. By far the worst offenders for AGEs (Advanced Glycation End Products, which can not only cause collagen to stiffen, but also inactivate proteins responsible for collagen repair, along with doing much more serious damage to your body’s natural functions) include:

    • Hot dogs
    • Bacon
    • Fried/roasted/grilled meats

    Is it worth it as a supplement?

    That depends on you, your age, and your lifestyle, but it’s generally considered safe*

    *if you have a seafood allergy, be careful though, as many supplements are from fish or shellfish—you will need to find one that’s free from your allergen

    Also, all collagen is animal-derived. So if you’re a vegan, decide for yourself whether this constitutes medicine and if so, whether that makes it ethically permissible to you.

    With that out of the way:

    What the science says on collagen supplementation

    Collagen for skin

    Read: Effects of collagen supplementation on skin aging (systematic review and meta-analysis)

    The short version is that they selected 19 studies with over a thousand participants in total, and they found:

    In the meta-analysis, a grouped analysis of studies showed favorable results of hydrolyzed collagen supplementation compared with placebo in terms of skin hydration, elasticity, and wrinkles.

    The findings of improved hydration and elasticity were also confirmed in the subgroup meta-analysis.

    Based on results, ingestion of hydrolyzed collagen for 90 days is effective in reducing skin aging, as it reduces wrinkles and improves skin elasticity and hydration.

    Caveat: while that systematic review had no conflicts of interests, at least some of the 19 studies will have been funded by beauty companies. Here are two, so that you know what that looks like:

    Funded by Quiris to investigate their own supplement, Elasten®:

    A Collagen Supplement Improves Skin Hydration, Elasticity, Roughness, and Density

    Funded by BioCell to investigate their own supplement, BioCell Collagen:

    The Effects of Skin Aging Associated with the Use of BioCell Collagen

    A note on funding bias: to be clear, the issue is not that the researchers might be corrupt (though that could happen).

    The issue is more that sometimes companies will hire ten labs to do ten research studies… and then pull funding from ones whose results aren’t going the way they’d like.

    So the “best” (for them) study is the one that gets published.

    Here’s another systematic review—like the one at the top of this section—that found the same, with doses ranging from 2.5g–15g per day for 8 weeks or longer:

    Read: Oral Collagen Supplementation: A Systematic Review of Dermatological Applications

    Again, some of those studies will have been funded by beauty companies. The general weight of evidence does seem clear and favorable, though.

    Collagen for bones

    Here, we encountered a lot less in the way of potential bias, because this is simply marketed a lot less. Despite being arguably far more important!

    We found a high quality multi-vector randomized controlled study with a sample size of 131 postmenopausal women. They had these women take 5g collagen supplement (or placebo), and studied the results over the course of a year.

    They found:

    • The intake of the supplement increased bone mineral density (BMD)
    • Supplementation was also associated with a favorable shift in bone markers, indicating:
      • increased bone formation
      • reduced bone degradation

    Read: Specific Collagen Peptides Improve Bone Mineral Density and Bone Markers in Postmenopausal Wome

    A follow-up study with 31 of these women found that taking 5 grams of collagen daily for a total of 4 years was associated with a progressive increase in BMD.

    You might be wondering if collagen also helps against osteoarthritis.

    The answer is: yes, it does (at least, it significantly reduces the symptoms)

    Read: Effect of collagen supplementation on osteoarthritis symptoms

    In summary:

    • You need collagen for health skin, bones, joints, and more
    • Your body makes collagen from your food
    • You can help it by getting plenty of protein, vitamins, and minerals
    • You can also help it by not doing the usual Bad Things™ (smoking, drinking, eating processed foods, especially processed meats)
    • You can also eat collagen directly in the form of other animals’ skin and bones
    • You can also buy collagen supplements (but watch out for allergens)

    Want to try collagen supplementation?

    We don’t sell it (or anything else), but for your convenience…

    Check it out: Hydrolyzed Collagen Peptides (the same as in most of the above studies), 90 days supply at 5g/day

    We selected this one because it’s the same kind used in many of the studies, and it doesn’t contain any known allergens.

    It’s bovine collagen, meaning it’s from cows, so it’s not vegan, and also some subscribers may want to abstain for religious reasons. We respect that, and/but make our recommendations based solely on the science of health and productivity.

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