Health Benefits Of Cranberries (But: You’d Better Watch Out)
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Health Benefits Of Cranberries (But: You’d Better Watch Out)
Quick clarification first: today we’re going to be talking about cranberries. Not “cranberry juice drink” that is loaded with sugar, nor “cranberry jelly” or similar that is more added sugar than it is cranberry.
We’re going to keep this short today, because “eat berries” is probably something you know already, but there are some things you should be aware of!
The benefits
Cranberries, even more than most berries, are full of polyphenols and flavonoids that do “those three things that usually come together”: antioxidant properties, anti-inflammatory properties, and anti-cancer properties
Unsurprisingly, this also means they’re good for the immune system and thus quite a boon in flu season:
They’re also good for heart health:
Quick Tip: we’re giving you one study for each of these things for brevity, but if you click through on any of our PubMed study links, you’ll (almost) always see a heading “Similar articles” heading beneath it, which will (almost) always show you plenty more.
Perhaps the most popular reason people take cranberry supplements, though, is their effectiveness at prevention of urinary tract infections:
Indeed, their effectiveness is such that researchers have considered them a putative alternative to antibiotics, particularly in individuals with recurrent UTIs:
Is it safe?
Cranberries are generally considered a very healthful food. However, there are two known possible exceptions:
If you are taking warfarin, it is possible that cranberry consumption may cause additional anti-clotting effects that you don’t want.
If you are at increased risk of kidney stones, the science is currently unclear as to whether this will help or hinder:
- Influence of cranberry juice on the urinary risk factors for calcium oxalate kidney stone formation ← this one concluded “Cranberry juice has antilithogenic properties and, as such, deserves consideration as a conservative therapeutic protocol in managing calcium oxalate urolithiasis”
- Dietary supplementation with cranberry concentrate tablets may increase the risk of nephrolithiasis ← this one, as you can see, concluded the opposite
- Safety of Cranberry: Evaluation of Evidence of Kidney Stone Formation and Botanical Drug-Interactions ← this one acknowledges “contradictory data regarding the role of cranberry in kidney stone formation”
Where can I get some?
You can probably buy fresh, frozen, or dried cranberries from wherever you normally do your grocery shopping.
However, if you prefer to take it in supplement form, then here’s an example product on Amazon
Enjoy!
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Gut Health 2.0
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Gene Expression & Gut Health
This is Dr. Tim Spector. After training in medicine and becoming a consultant rheumatologist, he’s turned his attention to medical research, and is these days a specialist in twin studies, genetics, epigenetics, microbiome, and diet.
What does he want us to know?
For one thing: epigenetics are for more than just getting your grandparents’ trauma.
More usefully: there are things we can do to improve epigenetic factors in our body
DNA is often seen as the script by which our body does whatever it’s going to do, but it’s only part of the story. Thinking of DNA as some kind of “magical immutable law of reality” overlooks (to labor the metaphor) script revisions, notes made in the margins, directorial choices, and ad-lib improvizations, as well as the quality of the audience’s hearing and comprehension.
Hence the premise of one of Dr. Spector’s older books, “Identically Different: Why We Can Change Our Genes”
(*in fact, it was his first, from all the way back in 2013, when he’d only been a doctor for 34 years)
Gene expression will trump genes every time, and gene expression is something that can often be changed without getting in there with CRISPR / a big pair of scissors and some craft glue.
How this happens on the micro level is beyond the scope of today’s article; part of it has to do with enzymes that get involved in the DNA transcription process, and those enzymes in turn are despatched or not depending on hormonal messaging—in the broadest sense of “hormonal”; all the body’s hormonal chemical messengers, not just the ones people think of as hormones.
However, hormonal messaging (of many kinds) is strongly influenced by something we can control relatively easily with a little good (science-based) knowledge: the gut.
The gut, the SAD, and the easy
In broad strokes: we know what is good for the gut. We’ve written about it before at 10almonds:
Making Friends With Your Gut (You Can Thank Us Later)
This is very much in contrast with what in scientific literature is often abbreviated “SAD”, the Standard American Diet, which is very bad for the gut.
However, Dr. Spector (while fully encouraging everyone to enjoy an evidence-based gut-healthy diet) wanted to do one better than just a sweeping one-size-fits-all advice, so he set up a big study with 15,000 identical twins; you can read about it here: TwinsUK
The information that came out of that was about a lot more than just gene expression and gut health, but it did provide the foundation for Dr. Spector’s next project, ZOE.
ZOE crowdsources huge amounts of data including individual metabolic responses to standardized meals in order to predict personalized food responses based on individual biology and unique microbiome profile.
In other words, it takes the guesswork out of a) knowing what your genes mean for your food responses b) tailoring your food choices with your genetic expression in mind, and c) ultimately creating a positive feedback loop to much better health on all levels.
Now, this is not an ad for ZOE, but if you so wish, you can…
- Get the free ZOE gut health guide (this is good, but generic, gut health information)
- Take the ZOE home gut health test (quiz followed by offers of lab tests)
- Browse the ZOE Health Academy, its education wing
Want to know more?
Dr. Spector has a bunch of books out, including some that we’ve reviewed previously:
- Spoon-Fed: Why Almost Everything We’ve Been Told About Food Is Wrong
- The Diet Myth: The Real Science Behind What We Eat
- Food for Life: The New Science of Eating Well
You can also check out our own previous main feature, which wasn’t about Dr. Spector’s work but was very adjacent:
The Brain-Gut Highway: A Two-Way Street
Enjoy!
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Yoga Nidra Made Easy – by Dr. Uma Dinsmore-Tuli and Nirlipta Tuli
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We’ve reviewed books about yoga before, and about sleep. This one’s different.
It’s about a yogic practice that can be used to promote restful sleep—or just be a non-sleeping exercise that nonetheless promotes relaxation and recuperation.
While yoga nidra is as somatic as it is psychological, its corporeal aspects are all explored in a lying-down-on-one’s-back state. This isn’t a book of stretches and poses and such—those are great, but are simply not needed for this practice.
The authors explain, step-by-step, simply and clearly, how to practice yoga nidra, and get out of it what you want to (there are an assortment of possible outcomes, per your preference; there are options to choose along the way).
A lot of books about yoga, even when written in English, contain a lot of Sanskrit terms. This one doesn’t. And, that difference goes a long way to living up to the title of making this easy, for those of us who regrettably don’t read even transliterated Sanskrit.
Bottom line: if ever you struggle to relax, struggle to sleep, or struggle to find your get-up-and-go, this book provides all you need to engage in this very restorative practice!
Click here to check out Yoga Nidra Made Easy, and learn this restorative tool for yourself!
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Does intermittent fasting have benefits for our brain?
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Intermittent fasting has become a popular dietary approach to help people lose or manage their weight. It has also been promoted as a way to reset metabolism, control chronic disease, slow ageing and improve overall health.
Meanwhile, some research suggests intermittent fasting may offer a different way for the brain to access energy and provide protection against neurodegenerative diseases like Alzheimer’s disease.
This is not a new idea – the ancient Greeks believed fasting enhanced thinking. But what does the modern-day evidence say?
First, what is intermittent fasting?
Our diets – including calories consumed, macronutrient composition (the ratios of fats, protein and carbohydrates we eat) and when meals are consumed – are factors in our lifestyle we can change. People do this for cultural reasons, desired weight loss or potential health gains.
Intermittent fasting consists of short periods of calorie (energy) restriction where food intake is limited for 12 to 48 hours (usually 12 to 16 hours per day), followed by periods of normal food intake. The intermittent component means a re-occurrence of the pattern rather than a “one off” fast.
Food deprivation beyond 24 hours typically constitutes starvation. This is distinct from fasting due to its specific and potentially harmful biochemical alterations and nutrient deficiencies if continued for long periods.
4 ways fasting works and how it might affect the brain
The brain accounts for about 20% of the body’s energy consumption.
Here are four ways intermittent fasting can act on the body which could help explain its potential effects on the brain.
1. Ketosis
The goal of many intermittent fasting routines is to flip a “metabolic switch” to go from burning predominately carbohydrates to burning fat. This is called ketosis and typically occurs after 12–16 hours of fasting, when liver and glycogen stores are depleted. Ketones – chemicals produced by this metabolic process – become the preferred energy source for the brain.
Due to this being a slower metabolic process to produce energy and potential for lowering blood sugar levels, ketosis can cause symptoms of hunger, fatigue, nausea, low mood, irritability, constipation, headaches, and brain “fog”.
At the same time, as glucose metabolism in the brain declines with ageing, studies have shown ketones could provide an alternative energy source to preserve brain function and prevent age-related neurodegeneration disorders and cognitive decline.
Consistent with this, increasing ketones through supplementation or diet has been shown to improve cognition in adults with mild cognitive decline and those at risk of Alzheimer’s disease respectively.
2. Circadian syncing
Eating at times that don’t match our body’s natural daily rhythms can disrupt how our organs work. Studies in shift workers have suggested this might also make us more prone to chronic disease.
Time-restricted eating is when you eat your meals within a six to ten-hour window during the day when you’re most active. Time-restricted eating causes changes in expression of genes in tissue and helps the body during rest and activity.
A 2021 study of 883 adults in Italy indicated those who restricted their food intake to ten hours a day were less likely to have cognitive impairment compared to those eating without time restrictions.
Matching your eating to the active parts of your day may have brain benefits.
Shutterstock3. Mitochondria
Intermittent fasting may provide brain protection through improving mitochondrial function, metabolism and reducing oxidants.
Mitochondria’s main role is to produce energy and they are crucial to brain health. Many age-related diseases are closely related to an energy supply and demand imbalance, likely attributed to mitochondrial dysfunction during ageing.
Rodent studies suggest alternate day fasting or reducing calories by up to 40% might protect or improve brain mitochondrial function. But not all studies support this theory.
4. The gut-brain axis
The gut and the brain communicate with each other via the body’s nervous systems. The brain can influence how the gut feels (think about how you get “butterflies” in your tummy when nervous) and the gut can affect mood, cognition and mental health.
In mice, intermittent fasting has shown promise for improving brain health by increasing survival and formation of neurons (nerve cells) in the hippocampus brain region, which is involved in memory, learning and emotion.
What we eat can affect our brain, and vice versa.
ShutterstockThere’s no clear evidence on the effects of intermittent fasting on cognition in healthy adults. However one 2022 study interviewed 411 older adults and found lower meal frequency (less than three meals a day) was associated with reduced evidence of Alzheimer’s disease on brain imaging.
Some research has suggested calorie restriction may have a protective effect against Alzheimer’s disease by reducing oxidative stress and inflammation and promoting vascular health.
When we look at the effects of overall energy restriction (rather than intermittent fasting specifically) the evidence is mixed. Among people with mild cognitive impairment, one study showed cognitive improvement when participants followed a calorie restricted diet for 12 months.
Another study found a 25% calorie restriction was associated with slightly improved working memory in healthy adults. But a recent study, which looked at the impact of calorie restriction on spatial working memory, found no significant effect.
Bottom line
Studies in mice support a role for intermittent fasting in improving brain health and ageing, but few studies in humans exist, and the evidence we have is mixed.
Rapid weight loss associated with calorie restriction and intermittent fasting can lead to nutrient deficiencies, muscle loss, and decreased immune function, particularly in older adults whose nutritional needs may be higher.
Further, prolonged fasting or severe calorie restriction may pose risks such as fatigue, dizziness, and electrolyte imbalances, which could exacerbate existing health conditions.
If you’re considering intermittent fasting, it’s best to seek advice from a health professional such as a dietitian who can provide guidance on structuring fasting periods, meal timing, and nutrient intake. This ensures intermittent fasting is approached in a safe, sustainable way, tailored to individual needs and goals.
Hayley O’Neill, Assistant Professor, Faculty of Health Sciences and Medicine, Bond University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Seniors: Improve Blood Flow & Circulation In Your Legs
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Dr. Doug Weiss, a physiotherapist (and thus: a doctor of physical therapy), has advice on how and why to increase blood flow and circulation in your legs, keeping yourself healthier for longer and avoiding a lot of potential unpleasantries.
The exercises
The exercises here are not complex; they are as follows, and he suggests 3 sets of 10 reps of each, daily:
- Sitting ankle pumps: sitting on a chair or the edge of a bed, lift the toes up, then heels up, squeezing the muscles.
- Sitting knee extensions: sitting as before, kick one leg up until knee is straight, then switch legs.
- Heel raises: standing this time, with a sturdy support such as a countertop, raise on toes as high as possible, then lower heels back to the ground
- Pillow squats: placing pillows on a chair, cross hands on chest, and simply stand up and sit down—similar to the “getting up off the floor without using your hands” exercise, but an easier version.
For visuals on these, and more details including the specific benefits of each, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like:
4 Tips To Stand Without Using Hands ← this time it’s the full movement, from the floor, and this is a really important movement to be able to do, as it’s a big indicator of healthy longevity
Take care!
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Lycopene’s Benefits For The Gut, Heart, Brain, & More
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What Doesn’t Lycopene Do?
Lycopene is an antioxidant carotenoid famously found in tomatoes; it actually appears in even higher levels in watermelon, though. If you are going to get it from tomato, know that cooking improves the lycopene content rather than removing it (watermelon, on the other hand, can be enjoyed as-is and already has the higher lycopene content).
Antioxidant properties
Let’s reiterate the obvious first, for the sake of being methodical and adding a source. Lycopene is a potent antioxidant with multiple health benefits:
Lycopene: A Potent Antioxidant with Multiple Health Benefits
…and as such, it does all the things you might reasonably expect and antioxidant to do. For example…
Anti-inflammatory properties
In particular, it regulates macrophage activity, reducing inflammation while improving immune response:
Lycopene Regulates Macrophage Immune Response through the Autophagy Pathway Mediated by RIPK1
As can be expected of most antioxidants and anti-inflammatory agents, it also has…
Anticancer properties
Scientific papers tend to be “per cancer type”, so we’re just going to give one example, but there’s pretty much evidence for its utility against most if not all types of cancer. We’re picking prostate cancer though, as it’s one that’s been studied the most in the context of lycopene intake—in this study, for example, it was found that men who enjoyed at least two servings of lycopene-rich tomato sauce per week were 30% less likely to develop prostate cancer than those who didn’t:
Dietary lycopene intake and risk of prostate cancer defined by ERG protein expression
If you’d like to see something more general, however, then check out:
Potential Use of Tomato Peel, a Rich Source of Lycopene, for Cancer Treatment
It also fights Candida albicans
Ok, this is not (usually) so life-and-death as cancer, but reducing our C. albicans content (specifically: in our gut) has a lot of knock-on effects for other aspects of our health, so this isn’t one to overlook:
The title does not make this clear, but yes: this does mean it has an antifungal effect. We mention this because often cellular apoptosis is good for an overall organism, but in this case, it simply kills the Candida.
It’s good for the heart
A lot of studies focus just on triglyceride markers (which lycopene improves), but more tellingly, here’s a 10-year observational study in which diets rich in lycopene were associated to a 17–26% lower risk of heart disease:
Relationship of lycopene intake and consumption of tomato products to incident CVD
…and a 39% overall reduced mortality in, well, we’ll let the study title tell it:
…which means also:
It’s good for the brain
As a general rule of thumb, what’s good for the heart is good for the brain (because the brain needs healthy blood flow to stay healthy, and is especially vulnerable when it doesn’t get that), and in this case that rule of thumb is also borne out by the post hoc evidence, specifically yielding a 31% decreased incidence of stroke:
Dietary and circulating lycopene and stroke risk: a meta-analysis of prospective studies
Is it safe?
As a common food product, it is considered very safe.
If you drink nothing but tomato juice all day for a long time, your skin will take on a reddish hue, which will go away if you stop getting all your daily water intake in tomato juice.
In all likelihood, even if you went to extremes, you would get sick from the excess of vitamin A (generally present in the same foods) sooner than you’d get sick from the excess of lycopene.
Want to try some?
We don’t sell it, and also we recommend simply enjoying tomatoes, watermelons, etc, but if you do want a supplement, here’s an example product on Amazon
Enjoy!
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‘Disease X’: What it is (and isn’t)
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What you need to know
- In January 2024, the World Economic Forum hosted an event called Preparing for Disease X to discuss strategies to improve international pandemic response.
- Disease X is a term used in epidemiology to refer to potential disease threats. It is not a real disease or a global conspiracy.
- Preparation to prevent and respond to future pandemics is a necessary part of global health to keep us all safer.
During the World Economic Forum’s 54th annual meeting in Davos, Switzerland, global health experts discussed ways to strengthen health care systems in preparation for future pandemics. Conspiracy theories quickly began circulating posts about the event and the fictional disease at its center, so-called Disease X.
What is Disease X?
In 2018, the World Health Organization added Disease X to its list of Blueprint Priority Diseases that are public health risks. But, unlike the other diseases on the list, Disease X doesn’t exist. The term represents a hypothetical human disease capable of causing a pandemic. Although experts don’t know what the next Disease X will be, they can make educated guesses about where and how it may emerge—and how we can prepare for it.
Why are we hearing about Disease X now?
COVID-19 has been the deadliest infectious disease outbreak of the 21st century. It’s also an example of a Disease X: a previously unknown pathogen that spreads rapidly around the world, claiming millions of lives.
When the WEF hosted a panel of experts to discuss Disease X, it was the first exposure that many people had to a concept that global health experts have been discussing since 2018.
Even before the routine pandemic preparedness event took place, online conspiracy theorists began circulating false claims that those discussing and preparing for Disease X had sinister motives, underscoring how widespread distrust of global health entities has become in the wake of the COVID-19 pandemic.
Why does Disease X matter?
Epidemiologists use concepts like Disease X to plan for future outbreaks and avoid the mistakes of past outbreaks. The COVID-19 pandemic and the recent non-endemic outbreak of mpox highlight the importance of global coordination to efficiently prevent and respond to disease outbreaks.
Pandemics are inevitable, but the scale of their destruction doesn’t have to be. Major disease outbreaks are likely to become more frequent due to the impacts of climate change. Preparing for a pandemic now helps ensure that the world is better equipped to handle the next one.
This article first appeared on Public Good News and is republished here under a Creative Commons license.
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