The Lymphatic System Against Cancer & More
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Ask Not What Your Lymphatic System Can Do For You…
Just kidding; we’ll cover that first, as it’s definitely not talked about enough.
The lymphatic system is the system in the body that moves lymph around. It’s made of glands, nodes, and vessels:
- The glands (such as the tonsils and the adenoids) and nodes filter out bacteria and produce white blood cells. Specific functions may be, well, specialized—beyond the scope of today’s article—but that’s the broad function.
- The vessels are the tubes that allow those things to be moved around, suspended in lymph.
What’s lymph? It’s a colorless water-like liquid that transports immune cells, nutrients (and waste) around the body (through the lymphatic system).
Yes, it works alongside your vasculature; when white blood cells aren’t being deployed en masse into your bloodstream to deal with some threat, they’re waiting in the wings in the lymphatic system.
While your blood is pumped around by your heart, lymph moves based on a variety of factors, including contractions of small specialized lymphatic muscles, the pressure gradient created by the combination of those and gravity, and the movements of your body itself.
Here’s a larger article than we have room for, with diagrams we also don’t have room for:
Modelling the lymphatic system
To oversimplify it in few words for the sake of moving on: you can most of the time: think of it as an ancillary network supporting your circulatory system that unlike blood, doesn’t deal with oxygen or sugars, but does deal with a lot of other things, including:
- water and salt balance
- immune cells and other aspects of immune function
- transports fats (and any fat-soluble vitamins in them) into circulation
- cleans up stuff that gets stuck between cells
- general detoxification
There’s a lot that can go wrong if lymph isn’t flowing as it should
Too much to list here, but to give an idea:
- Arthritis and many autoimmune diseases
- Cardiovascular disease and metabolic syndrome
- Obesity, diabetes, and organ failure
- Alzheimer’s and other dementias
- Lymphadenitis, lymphangitis, and lymphedenopathy
- Lymphomas and Hodgkin’s disease (both are types of lymphatic cancer)
- Cancers of other kinds, because of things not being cleaned up where and when they should be
Yikes! That’s a lot of important things for a mostly-forgotten system to be taking care of protecting us from!
What you can do for your lymphatic system, to avoid those things!
Happily, there are easy things we can do to give our lymph some love, such as:
Massage therapy (and foam rolling)
This is the go-to that many people/publications recommend. It’s good! It’s certainly not the most important thing to do, but it’s good.
You can even use a simple gadget like this one to help move the lymph around, without needing to learn arcane massage techniques.
Exercise (move your body!)
This is a lot more important. The more we move our body, the more lymph moves around. The more lymph moves around today, the more easily it will move around tomorrow. A healthy constant movement of lymph throughout the lymphatic system is key to keeping everything running smoothly.
If you pick only one kind of exercise, make it High-Intensity Interval Training (HIIT):
How To Do HIIT (Without Wrecking Your Body)
If for some reason you really can’t do that, just spend as much of your waking time as reasonably possible, moving, per:
For ideas on how to do that, check out…
Get thee to a kitchen
This is about getting healthy food that gives your body’s clean-up crew (the lymphatic system) an easier time of it.
Rather than trying to “eat clean” which can be a very nebulous term and it’s often not at all clear (and/or hotly debated) what counts as “clean”, instead, stick to foods that constitute an anti-inflammatory diet:
Take care!
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5 Surprising Benefits Of Exercise After 50 (More Than Just Fitness)
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It’s easy to want to do less as we get older, but the benefits of continuing to actively exercise, pushing oneself even just a little, can be far-reaching.
Direct and indirect benefits
As well as the obvious fitness benefits, keeping up good levels of exercise can also offer:
Healthy Skin
Exercise improves circulation, bringing growth factors (thus: regeneration, because it’s replacing cells), oxygen, and nutrients to the skin. Accordingly, it can lead to healthier, more youthful-looking skin as a low-cost alternative to a lot of skincare products. That said, it also encourages good skin habits, like daily sunscreen use.
Bone Health
Weight-bearing and resistance exercises (which between them, encompasses most forms of exercise) improve bone density. This is because physical stress signals bones to strengthen, reducing the risk of fractures. This includes activities like walking, hiking, and using resistance bands or weights. Note however that it is on a “per bone” basis. So for example, hiking will improve your lower body and spine, but do nothing for your arms. On the other hand, doing a daily groceries trip on foot, if local geography makes that practicable, can do the whole body, if one is then carrying groceries home (this writer lives about 2 miles from where she buys groceries, and does this pretty much daily).
Mental Health
Exercise, especially outdoors, has well-established positive effects on mental well-being, and can relieve stress and improve mood. As a bonus, community engagement and shared experiences can enhance mental health benefits for many people—but if you prefer it as peaceful time for yourself, that’s beneficial in its own way too!
Better Sleep
Physical activity helps promote better sleep quality, which is important for so many aspects of health—because fatiguing the body through exercise can lead to a more restful night, which is often harder to achieve with age.
Visibility and Confidence
Staying active and taking on challenges (e.g. training for some event) can boost visibility in social and family settings, countering “invisibility” often felt from midlife onwards. And even if one doesn’t do those things, exercise fosters confidence and helps people carry themselves with more self-assurance, which has a lot of knock-on benefits too.
For more on all of these things, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Are There Any Sensible Age Limits To Exercise?
Take care!
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The Autoimmune Cure – by Dr. Sara Gottfried
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We’ve featured Dr. Gottfried before, as well as another of her books (“Younger”), and this one’s a little different, and on the one hand very specific, while on the other hand affecting a lot of people.
You may be thinking, upon reading the subtitle, “this sounds like Dr. Gabor Maté’s ideas” (per: “When The Body Says No”), and 1) you’d be right, and 2) Dr. Gottfried does credit him in the introduction and refers back to his work periodically later.
What she adds to this, and what makes this book a worthwhile read in addition to Dr. Maté’s, is looking clinically at the interactions of the immune system and nervous system, but also the endocrine system (Dr. Gottfried’s specialty) and the gut.
Another thing she adds is more of a focus on what she writes about as “little-t trauma”, which is the kind of smaller, yet often cumulative, traumas that often eventually add up over time to present as C-PTSD.
While “stress increases inflammation” is not a novel idea, Dr. Gottfried takes it further, and looks at a wealth of clinical evidence to demonstrate the series of events that, if oversimplified, seem unbelievable, such as “you had a bad relationship and now you have lupus”—showing evidence for each step in the snowballing process.
The style is a bit more clinical than most pop-science, but still written to be accessible to laypersons. This means that for most of us, it might not be the quickest read, but it will be an informative and enlightening one.
In terms of practical use (and living up to its subtitle promise of “cure”), this book does also cover all sorts of potential remedial approaches, from the obvious (diet, sleep, supplements, meditation, etc) to the less obvious (ketamine, psilocybin, MDMA, etc), covering the evidence so far as well as the pros and cons.
Bottom line: if you have or suspect you may have an autoimmune problem, and/or would just like to nip the risk of such in the bud (especially bearing in mind that the same things cause neuroinflammation and thus, putatively, depression and dementia too), then this is one for you.
Click here to check out the Autoimmune Cure, and take care of your body and mind!
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Can You Step Backwards Without Your Foot Or Torso Turning Out?
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Walking backwards is often overlooked, but research shows it can enhance forward walking, especially in stroke patients; it has other benefits for everyone else, too. The physiotherapists at Fitness4Life Physical Therapy explain:
…and one step back
How it works: walking backwards heightens proprioception and stimulates muscles, improving balance and posture. Additionally, our daily lives tend to involve forward-leaning postures, causing upper back bending, and walking backwards helps counterbalance this.
Extra benefits: training to walk backwards can reduce the risk of falls, as stepping back is a common movement that is often untrained.
Exercise: try doing backwards lunges, to assess your skill and balance while moving backward. If foot rotation or torso rotation occurs during the exercise, then there’s room for improvement. Correcting these movements is then simply a matter of practicing backward lunges without turning.
10almonds tip: any exercise is only as good as your will to actually do it. For this reason, dancing is a great exercise in this case, as almost all forms of dance involve stepping backwards (in order to have steps without travelling somewhere, forwards steps are usually balanced with backwards ones)
For more on all this, plus a visual demonstration of the exercise, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Fall Special ← About how to avoid falling, and how to avoid (and failing that, at least minimize) injury if you do fall. If you think this only happens to other/older people, remember, there’s a first time for everything, so it is better to be prepared in advance!
Take care!
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STI rates are increasing among midlife and older adults. We need to talk about it
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Globally, the rates of common sexually transmissible infections (STIs) are increasing among people aged over 50. In some cases, rates are rising faster than among younger people.
Recent data from the United States Centers for Disease Control and Prevention shows that, among people aged 55 and older, rates of gonorrhoea and chlamydia, two of the most common STIs, more than doubled between 2012 and 2022.
Australian STI surveillance data has reflected similar trends. Between 2013 and 2022, there was a steady increase in diagnoses of chlamydia, gonorrhoea and syphilis among people aged 40 and older. For example, there were 5,883 notifications of chlamydia in Australians 40 plus in 2013, compared with 10,263 in 2022.
A 2020 study of Australian women also showed that, between 2000 and 2018, there was a sharper increase in STI diagnoses among women aged 55–74 than among younger women.
While the overall rate of common STIs is highest among young adults, the significant increase in STI diagnoses among midlife and older adults suggests we need to pay more attention to sexual health across the life course.
Fit Ztudio/Shutterstock Why are STI rates rising among older adults?
STI rates are increasing globally for all age groups, and an increase among midlife and older people is in line with this trend.
However, increases of STIs among older people are likely due to a combination of changing sex and relationship practices and hidden sexual health needs among this group.
The “boomer” generation came of age in the 60s and 70s. They are the generation of free love and their attitude to sex, even as they age, is quite different to that of generations before them.
Given the median age of divorce in Australia is now over 43, and the internet has ushered in new opportunities for post-separation dating, it’s not surprising that midlife and older adults are exploring new sexual practices or finding multiple sexual partners.
People may start new relationships later in life. Tint Media/Shutterstock It’s also possible midlife and older people have not had exposure to sexual health education in school or do not relate to current safe sex messages, which tend to be directed toward young people. Condoms may therefore seem unnecessary for people who aren’t trying to avoid pregnancy. Older people may also lack confidence negotiating safe sex or accessing STI screening.
Hidden sexual health needs
In contemporary life, the sex lives of older adults are largely invisible. Ageing and older bodies are often associated with loss of power and desirability, reflected in the stereotype of older people as asexual and in derogatory jokes about older people having sex.
With some exceptions, we see few positive representations of older sexual bodies in film or television.
Older people’s sexuality is also largely invisible in public policy. In a review of Australian policy relating to sexual and reproductive health, researchers found midlife and older adults were rarely mentioned.
Sexual health policy generally targets groups with the highest STI rates, which excludes most older people. As midlife and older adults are beyond childbearing years, they also do not feature in reproductive health policy. This means there is a general absence of any policy related to sex or sexual health among midlife or older adults.
Added to this, sexual health policy tends to be focused on risk rather than sexual wellbeing. Sexual wellbeing, including freedom and capacity to pursue pleasurable sexual experiences, is strongly associated with overall health and quality of life for adults of all ages. Including sexual wellbeing as a policy priority would enable a focus on safe and respectful sex and relationships across the adult life course.
Without this priority, we have limited knowledge about what supports sexual wellbeing as people age and limited funding for initiatives to engage with midlife or older adults on these issues.
Midlife and older adults may have limited knowledge about STIs. Southworks/Shutterstock How can we support sexual health and wellbeing for older adults?
Most STIs are easily treatable. Serious complications can occur, however, when STIs are undiagnosed and untreated over a long period. Untreated STIs can also be passed on to others.
Late diagnosis is not uncommon as some STIs can have no symptoms and many people don’t routinely screen for STIs. Older, heterosexual adults are, in general, less likely than other groups to seek regular STI screening.
For midlife or older adults, STIs may also be diagnosed late because some doctors do not initiate testing due to concerns they will cause offence or because they assume STI risk among older people is negligible.
Many doctors are reluctant to discuss sexual health with their older patients unless the patient explicitly raises the topic. However, older people can be embarrassed or feel awkward raising matters of sex.
Resources for health-care providers and patients to facilitate conversations about sexual health and STI screening with older patients would be a good first step.
To address rising rates of STIs among midlife and older adults, we also need to ensure sexual health promotion is targeted toward these age groups and improve accessibility of clinical services.
More broadly, it’s important to consider ways to ensure sexual wellbeing is prioritised in policy and practice related to midlife and older adulthood.
A comprehensive approach to older people’s sexual health, that explicitly places value on the significance of sex and intimacy in people’s lives, will enhance our ability to more effectively respond to sexual health and STI prevention across the life course.
Jennifer Power, Associate Professor and Principal Research Fellow, Australian Research Centre in Sex, Health and Society, La Trobe University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Caffeine: Cognitive Enhancer Or Brain-Wrecker?
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The Two Sides Of Caffeine
We asked you for your health-related opinions on caffeine itself, not necessarily the coffee, tea, energy drinks, etc that might contain it.
We have, by the way previously written about the health effects of coffee and tea specifically:
As for our question about caffeine itself, though, we got the above-depicted, below-described, set of results:
- About 59% said “caffeine is a safe stimulant and cognitive enhancer”
- About 31% said “caffeine is a moderately safe recreational drug”
- About 8% said “caffeine’s addictive properties make it de facto bad”
- One (1) person said “caffeine will leave you a trembling exhausted wreck”
But what does the science say?
Caffeine is addictive: True or False?
True, though one will find occasional academics quibbling the definition. Most of the studies into the mechanisms of caffeine addiction have been conducted on rats, but human studies exist too and caffeine is generally considered addictive for humans, for example:
See also:
Notwithstanding its addictive status, caffeine is otherwise safe: True or False?
True-ish, for most people. Some people with heart conditions or a hypersensitivity to caffeine may find it is not safe for them at all, and for the rest of us, the dose makes the poison. For example:
❝Can too much caffeine kill you? Although quite rare, caffeine can be fatal in cases of overdose; such circumstances are generally not applicable to healthy individuals who typically consume caffeine via beverages such as tea or coffee.❞
this paper, by the way, also includes a good example of academics quibbling the definition of addiction!
Caffeine is a cognitive enhancer: True or False?
True, but only in the case of occasional use. If you are using it all the time, your physiology will normalize it and you will require caffeine in order to function at your normal level. To attain higher than that, once addicted to caffeine, would now require something else.
Read more: Caffeine: benefits and drawbacks for technical performance
Caffeine will leave you a trembling exhausted wreck: True or False?
True or False depending on usage:
- The famously moderate 3–5 cups per day will not, for most people, cause any such problems.
- Using/abusing it to make up for lost sleep (or some other source of fatigue, such as physical exhaustion from exertion), however, is much more likely to run into problems.
In the latter case, caffeine really is the “payday loan” of energy! It’ll give you an adrenal boost now (in return, you must suffer the adrenal dumping later, along with lost energy expended in the adrenaline surge), and also, the tiredness that you thought was gone, was just caffeine’s adenosine-blocking activities temporarily preventing you from being able to perceive the tiredness. So you’ll have to pay that back later, with interest, because of the extra time/exertion too.
Want to make caffeine a little more gentle on your system?
Taking l-theanine alongside caffeine can ameliorate some of caffeine’s less wonderful effects—and as a bonus, l-theanine has some nifty benefits of its own, too:
Enjoy!
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Low-Dose Aspirin & Anemia
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We recently wrote about…
How To Survive A Heart Attack When You’re Alone
…and one of the items was “if you have aspirin readily available, then after calling an ambulance is the time to take it—but don’t exert yourself trying to find some”.
But what of aspirin as a preventative?
Many people take low-dose aspirin daily as a way to reduce the risk of atherothrombosis specifically (and thus, indirectly, they hope to reduce the risk of heart attacks).
The science of how helpful this is both clear and complicated—that is to say, the stats are not ambiguous*, but there are complicating factors of which many people are unaware.
*it will reduce the overall risk of cardiovascular events, but will not affect CVD mortality; in other words, it may improve your recovery from minor cardiac events, but is not likely to save you from major ones.
And also, it has unwanted side effects that can constitute a more relevant threat for many people. We’ll share more on that at the end of today’s article, but first…
A newly identified threat from daily aspirin use
A large (n=313,508) study of older adults (median age 73) were sorted into those who used low-dose aspirin as a preventative, and those who did not.
The primary outcome was incidence of anemia sufficient to require treatment, and the secondary outcome was major bleeding. And, at least 1 in 5 of those who experienced anemia also experienced bleeding.
The bleeding issue was not “newly identified” and will not surprise many people; after all, the very reason that aspirin is taken as a CVD preventative is for its anti-clotting property of allowing blood to flow more freely.
The anemia, however, has been getting increasing scientific scrutiny lately, after long going unnoticed in the wild. Given that anemia also gives the symptom “dizziness”, this is also a significant threat for increasing the incidence of falls in the older population, too, which can of course lead to serious complications and ultimately death.
Here’s the paper itself:
Want to know more?
As promised, here’s what we wrote previously about some of aspirin’s other risks:
Aspirin, CVD Risk, & Potential Counter-Risks
Take care!
Don’t Forget…
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