Exercise, therapy and diet can all improve life during cancer treatment and boost survival. Here’s how
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With so many high-profile people diagnosed with cancer we are confronted with the stark reality the disease can strike any of us at any time. There are also reports certain cancers are increasing among younger people in their 30s and 40s.
On the positive side, medical treatments for cancer are advancing very rapidly. Survival rates are improving greatly and some cancers are now being managed more as long-term chronic diseases rather than illnesses that will rapidly claim a patient’s life.
The mainstays of cancer treatment remain surgery, chemotherapy, radiation therapy, immunotherapy, targeted therapy and hormone therapy. But there are other treatments and strategies – “adjunct” or supportive cancer care – that can have a powerful impact on a patient’s quality of life, survival and experience during cancer treatment.
Keep moving if you can
Physical exercise is now recognised as a medicine. It can be tailored to the patient and their health issues to stimulate the body and build an internal environment where cancer is less likely to flourish. It does this in a number of ways.
Exercise provides a strong stimulus to our immune system, increasing the number of cancer-fighting immune cells in our blood circulation and infusing these into the tumour tissue to identify and kill cancer cells.
Our skeletal muscles (those attached to bone for movement) release signalling molecules called myokines. The larger the muscle mass, the more myokines are released – even when a person is at rest. However, during and immediately after bouts of exercise, a further surge of myokines is secreted into the bloodstream. Myokines attach to immune cells, stimulating them to be better “hunter-killers”. Myokines also signal directly to cancer cells slowing their growth and causing cell death.
Exercise can also greatly reduce the side effects of cancer treatment such as fatigue, muscle and bone loss, and fat gain. And it reduces the risk of developing other chronic diseases such as heart disease and type 2 diabetes. Exercise can maintain or improve quality of life and mental health for patients with cancer.
Emerging research evidence indicates exercise might increase the effectiveness of mainstream treatments such as chemotherapy and radiation therapy. Exercise is certainly essential for preparing the patient for any surgery to increase cardio-respiratory fitness, reduce systemic inflammation, and increase muscle mass, strength and physical function, and then rehabilitating them after surgery.
These mechanisms explain why cancer patients who are physically active have much better survival outcomes with the relative risk of death from cancer reduced by as much as 40–50%.
Mental health helps
The second “tool” which has a major role in cancer management is psycho-oncology. It involves the psychological, social, behavioural and emotional aspects of cancer for not only the patient but also their carers and family. The aim is to maintain or improve quality of life and mental health aspects such as emotional distress, anxiety, depression, sexual health, coping strategies, personal identity and relationships.
Supporting quality of life and happiness is important on their own, but these barometers can also impact a patient’s physical health, response to exercise medicine, resilience to disease and to treatments.
If a patient is highly distressed or anxious, their body can enter a flight or fight response. This creates an internal environment that is actually supportive of cancer progression through hormonal and inflammatory mechanisms. So it’s essential their mental health is supported.
Putting the good things in: diet
A third therapy in the supportive cancer care toolbox is diet. A healthy diet can support the body to fight cancer and help it tolerate and recover from medical or surgical treatments.
Inflammation provides a more fertile environment for cancer cells. If a patient is overweight with excessive fat tissue then a diet to reduce fat which is also anti-inflammatory can be very helpful. This generally means avoiding processed foods and eating predominantly fresh food, locally sourced and mostly plant based.
Muscle loss is a side effect of all cancer treatments. Resistance training exercise can help but people may need protein supplements or diet changes to make sure they get enough protein to build muscle. Older age and cancer treatments may reduce both the intake of protein and compromise absorption so supplementation may be indicated.
Depending on the cancer and treatment, some patients may require highly specialised diet therapy. Some cancers such as pancreatic, stomach, esophageal, and lung cancer can cause rapid and uncontrolled drops in body weight. This is called cachexia and needs careful management.
Other cancers and treatments such as hormone therapy can cause rapid weight gain. This also needs careful monitoring and guidance so that, when a patient is clear of cancer, they are not left with higher risks of other health problems such as cardiovascular disease and metabolic syndrome (a cluster of conditions that boost your risk of heart disease, stroke and type 2 diabetes).
Working as a team
These are three of the most powerful tools in the supportive care toolbox for people with cancer. None of them are “cures” for cancer, alone or together. But they can work in tandem with medical treatments to greatly improve outcomes for patients.
If you or someone you care about has cancer, national and state cancer councils and cancer-specific organisations can provide support.
For exercise medicine support it is best to consult with an accredited exercise physiologist, for diet therapy an accredited practising dietitian and mental health support with a registered psychologist. Some of these services are supported through Medicare on referral from a general practitioner.
For free and confidential cancer support call the Cancer Council on 13 11 20.
Rob Newton, Professor of Exercise Medicine, Edith Cowan University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Circadian Rhythm: Far More Than Most People Know
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The Circadian Rhythm: Far More Than Most People Know
This is Dr. Satchidananda (Satchin) Panda, the scientist behind the discovery of the blue-light sensing cell type in the retina, and the many things it affects. But, he’s discovered more…
First, what you probably know (with a little more science)
Dr. Panda discovered that melanopsin, a photopigment, is “the primary candidate for photoreceptor-mediated entrainment”.
To put that in lay terms, it’s the brain’s go-to for knowing approximately what time of day or night it is, according to how much light there is (or isn’t), and how long it has (or hasn’t) been there.
But… the brain’s “go-to” isn’t the only method. By creating mice without melanopsin, he was able to find that they still keep a circadian rhythm, even in complete darkness:
Melanopsin (Opn4) Requirement for Normal Light-Induced Circadian Phase Shifting
In other words, it was a helpful, but not completely necessary, means of keeping a circadian rhythm.
So… What else is going on?
Dr. Panda and his team did a lot of science that is well beyond the scope of this main feature, but to give you an idea:
- With jargon: it explored the mechanisms and transcription translation negative feedback loops that regulate chronobiological processes, such as a histone lysine demathlyase 1a (JARID1a) that enhances Clock-Bmal1 transcription, and then used assorted genomic techniques to develop a model for how JARID1a works to moderate the level of Per transcription by regulating the transition between its repression and activation, and discovered that this heavily centered on hepatic gluconeogenesis and glucose homeostasis, facilitated by the protein cryptochrome regulating the fasting signal that occurs when glucagon binds to a G-protein coupled receptor, triggering CREB activation.
- Without jargon: a special protein tells our body how to respond to eating/fasting at different times of day—and conversely, certain physiological responses triggered by eating/fasting help us know what time of day it is.
- Simplest: our body keeps on its best cycle if we eat at the same time every day
This is important, because our circadian rhythm matters for a lot more than sleeping/waking! Take hormones, for example:
- Obvious hormones: testosterone and estrogen peak in the mornings around 9am, progesterone peaks between 10pm and 2am
- Forgotten hormones: cortisol peaks in the morning around 8:30am, melatonin peaks between 10pm and 2am
- More hormones: ghrelin (hunger hormone) peaks around 10am, leptin (satiety hormone) peaks 20 minutes after eating a certain amount of satiety-triggering food (protein does this most quickly), insulin is heavily tied to carbohydrate intake, but will still peak and trough according to when the body expects food.
What does this mean for us in practical terms?
For a start, it means that intermittent fasting can help guard against metabolic and related diseases (including inflammation, and thus also cancer, diabetes, arthritis, and more) a lot more if we practice it with our circadian rhythm in mind.
So that “8-hour window” for eating, that many intermittent fasting practitioners adhere to, is going to do much, much better if it’s 10am to 6pm, rather than, say, 4pm to midnight.
Additionally, Dr. Panda and his team found that a 12-hour eating window wasn’t sufficient to help significantly.
Some other take-aways:
- For reasons beyond the scope of this article, it’s good to exercise a) early b) before eating, so getting in some exercise between 8.30am and 10am is ideal
- It also means it’s beneficial to “front-load” eating, so a large breakfast at 10am, and smaller meals/snacks afterwards, is best.
- It also means that getting sunlight (even if cloud-covered) around 8.30am helps guard against metabolic disorders a lot, since the light remains the body’s go-to way of knowing the time.
- We realize that sunlight is not available at 8.30am at all latitudes at all times of year. Artificial is next-best.
- It also means sexual desire will typically peak in men in the mornings (per testosterone) and women in the evenings (per progesterone), but this is just an interesting bit of trivia, and not so relevant to metabolic health
What to do next…
Want to stabilize your own circadian rhythm in the best way, and also help Dr. Panda with his research?
His team’s (free!) app, “My Circadian Clock”, can help you track and organize all of the body’s measurable-by-you circadian events, and, if you give permission, will contribute to what will be the largest-yet human study into the topics covered today, to refine the conclusions and learn more about what works best.
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Vaccines and cancer: The myth that won’t die
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Two recent studies reported rising cancer rates among younger adults in the U.S. and worldwide. This prompted some online anti-vaccine accounts to link the studies’ findings to COVID-19 vaccines.
But, as with other myths, the data tells a very different story.
What you need to know
- Baseless claims that COVID-19 vaccines cause cancer have persisted online for several years and gained traction in late 2023.
- Two recent reports finding rising cancer rates among younger adults are based on pre-pandemic cancer incidence data. Cancer rates in the U.S. have been on the rise since the 1990s.
- There is no evidence of a link between COVID-19 vaccination and increased cancer risk.
False claims about COVID-19 vaccines began circulating months before the vaccines were available. Chief among these claims was misinformed speculation that vaccine mRNA could alter or integrate into vaccine recipients’ DNA.
It does not. But that didn’t prevent some on social media from spinning that claim into a persistent myth alleging that mRNA vaccines can cause or accelerate cancer growth. Anti-vaccine groups even coined the term “turbo cancer” to describe a fake phenomenon of abnormally aggressive cancers allegedly linked to COVID-19 vaccines.
They used the American Cancer Society’s 2024 cancer projection—based on incidence data through 2020—and a study of global cancer trends between 1999 and 2019 to bolster the false claims. This exposed the dishonesty at the heart of the anti-vaccine messaging, as data that predated the pandemic by decades was carelessly linked to COVID-19 vaccines in viral social media posts.
Some on social media cherry-pick data and use unfounded evidence because the claims that COVID-19 vaccines cause cancer are not true. According to the National Cancer Institute and American Cancer Society, there is no evidence of any link between COVID-19 vaccines and an increase in cancer diagnosis, progression, or remission.
Why does the vaccine cancer myth endure?
At the root of false cancer claims about COVID-19 vaccines is a long history of anti-vaccine figures falsely linking vaccines to cancer. Polio and HPV vaccines have both been the target of disproven cancer myths.
Not only do HPV vaccines not cause cancer, they are one of only two vaccines that prevent cancer.
In the case of polio vaccines, some early batches were contaminated with simian virus 40 (SV40), a virus that is known to cause cancer in some mammals but not humans. The contaminated batches were discovered, and no other vaccine has had SV40 contamination in over 60 years.
Follow-up studies found no increase in cancer rates in people who received the SV40-contaminated polio vaccine. Yet, vaccine opponents have for decades claimed that polio vaccines cause cancer.
Recycling of the SV40 myth
The SV40 myth resurfaced in 2023 when vaccine opponents claimed that COVID-19 vaccines contain the virus. In reality, a small, nonfunctional piece of the SV40 virus is used in the production of some COVID-19 vaccines. This DNA fragment, called the promoter, is commonly used in biomedical research and vaccine development and doesn’t remain in the finished product.
Crucially, the SV40 promoter used to produce COVID-19 vaccines doesn’t contain the part of the virus that enters the cell nucleus and is associated with cancer-causing properties in some animals. The promoter also lacks the ability to survive on its own inside the cell or interact with DNA. In other words, it poses no risk to humans.
Over 5.6 billion people worldwide have received COVID-19 vaccines since December 2020. At that scale, even the tiniest increase in cancer rates in vaccinated populations would equal hundreds of thousands of excess cancer diagnoses and deaths. The evidence for alleged vaccine-linked cancer would be observed in real incidence, treatment, and mortality data, not social media anecdotes or unverifiable reports.
This article first appeared on Public Good News and is republished here under a Creative Commons license.
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Longevity… Simplified – by Dr. Howard Luks
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In the spirit of the book itself, we’ll keep this one simple:
The information in this book will not be new to regular readers of 10almonds, or at least, not if you’ve been with us for a while (because we can only cover so much per day, so long-time readers will have accumulated more knowledge).
On the other hand, the information is clear, correct, and very much stripped down to the most important basics. Not the very simplest basics, which would be an oversimplification to the point of inutility, but the most important basics.
To take an example, when it comes to exercise, he doesn’t say “exercise more” but rather that “a complete exercise program has four pillars: aerobic training, resistance training, balance training, and high-intensity interval training (HIIT)”, and then he goes about explaining, in clear and simple terms, how to do those.
The style is similar when it comes to diet, sleep, and body-part-specific chapters such as about heart health, brain health, and so forth.
Bottom line: if you’re a long-time 10almonds reader, you probably don’t need this one, but it’d be a great book for someone else who has expressed an interest in getting healthier, as it really is a top-tier “primer” in increasing health and healthspan.
Click here to check out Longevity… Simplified, and enjoy simplified longevity!
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Alzheimer’s: The Bad News And The Good
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Dr. Devi’s Spectrum of Hope
This is Dr. Gayatri Devi. She’s a neurologist, board-certified in neurology, pain medicine, psychiatry, brain injury medicine, and behavioral neurology.
She’s also a Clinical Professor of Neurology, and Director of Long Island Alzheimer’s Disease Center, Fellow of the American Academy of Neurology, and we could continue all day with her qualifications, awards and achievements but then we’d run out of space. Suffice it to say, she knows her stuff.
Especially when it comes to the optimal treatment of stroke, cognitive loss, and pain.
In her own words:
❝Helping folks live their best lives—by diagnosing and managing complex neurologic disorders—that’s my job. Few things are more fulfilling! For nearly thirty years, my focus has been on brain health, concussions, Alzheimer’s and other dementias, menopause related memory loss, and pain.❞
Alzheimer’s is more common than you might think
According to Dr. Devi,
❝97% of patients with mild Alzheimer’s disease don’t even get diagnosed in their internist offices, and half of patients with moderate Alzheimer’s don’t get diagnosed.
What that means is that the percentage of people that we think about when we think about Alzheimer’s—the people in the nursing home—that’s a very, very small fraction of the entirety of the people who have the condition❞
As for what she would consider the real figures, she puts it nearer 1 in 10 adults aged 65 and older.
Source: Neurologist dispels myths about Alzheimer’s disease
Her most critical advice? Reallocate your worry.
A lot of people understandably worry about a genetic predisposition to Alzheimer’s, especially if an older relative died that way.
See also: Alzheimer’s, Genes, & You
However, Dr. Devi points out that under 5% of Alzheimer’s cases are from genetics, and the majority of Alzheimer’s cases can be prevented be lifestyle interventions.
See also: Reduce Your Alzheimer’s Risk
Lastly, she wants us to skip the stigma
Outside of her clinical practice and academic work, this is one of the biggest things she works on, reducing the stigma attached to Alzheimer’s both publicly and professionally:
Alzheimer’s Disease in Physicians: Assessing Professional Competence and Tempering Stigma
Want more from Dr. Devi?
You might enjoy this interview:
Click Here If The Embedded Video Doesn’t Load Automatically!
And here’s her book:
Enjoy!
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Are You Taking PIMs?
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Getting Off The Overmedication Train
The older we get, the more likely we are to be on more medications. It’s easy to assume that this is because, much like the ailments they treat, we accumulate them over time. And superficially at least, that’s what happens.
And yet, almost half of people over 65 in Canada are taking “potentially inappropriate medications”, or PIMs—in other words, medications that are not needed and perhaps harmful. This categorization includes medications where the iatrogenic harms (side effects, risks) outweigh the benefits, and/or there’s a safer more effective medication available to do the job.
You may be wondering: what does this mean for the US?
Well, we don’t have the figures for the US because we’re working from Canadian research today, but given the differences between the two country’s healthcare systems (mostly socialized in Canada and mostly private in the US), it seems a fair hypothesis that if it’s almost half in Canada, it’s probably more than half in the US. Socialized healthcare systems are generally quite thrifty and seek to spend less on healthcare, while private healthcare systems are generally keen to upsell to new products/services.
The three top categories of PIMs according to the above study:
- Gabapentinoids (anticonvulsants also used to treat neuropathic pain)
- Proton pump inhibitors (PPIs)
- Antipsychotics (especially, to people without psychosis)
…but those are just the top of the list; there are many many more.
The list continues: opioids, anticholinergics, sulfonlyurea, NSAIDs, benzodiazepines and related rugs, and cholinesterase inhibitors. That’s where the Canadian study cuts off (although it also includes “others” just before NSAIDs), but still, you guessed it, there are more (we’re willing to bet statins weigh heavily in the “others” section, for a start).
There are two likely main causes of overmedication:
The side effect train
This is where a patient has a condition and is prescribed drug A, which has some undesired side effects, so the patient is prescribed drug B to treat those. However, that drug also has some unwanted side effects of its own, so the patient is prescribed drug C to treat those. And so on.
For a real-life rundown of how this can play out, check out the case study in:
The Hidden Complexities of Statins and Cardiovascular Disease (CVD)
The convenience factor
No, not convenient for you. Convenient for others. Convenient for the doctor if it gets you out of their office (socialized healthcare) or because it was easy to sell (private healthcare). Convenient for the staff in a hospital or other care facility.
This latter is what happens when, for example, a patient is being too much trouble, so the staff give them promazine “to help them settle down”, notwithstanding that promazine is, besides being a sedative, also an antipsychotic whose common side effects include amenorrhea, arrhythmias, constipation, drowsiness and dizziness, dry mouth, impotence, tiredness, galactorrhoea, gynecomastia, hyperglycemia, insomnia, hypotension, seizures, tremor, vomiting and weight gain.
This kind of thing (and worse) happens more often towards the end of a patient’s life; indeed, sometimes precipitating that end, whether you want it or not:
Mortality, Palliative Care, & Euthanasia
How to avoid it
Good practice is to be “open-mindedly skeptical” about any medication. By this we mean, don’t reject it out of hand, but do ask questions about it.
Ask your prescriber not only what it’s for and what it’ll do, but also what the side effects and risks are, and an important question that many people don’t think to ask, and for which doctors thus don’t often have a well-prepared smooth-selling reply, “what will happen if I don’t take this?”
And look up unbiased neutral information about it, from reliable sources (Drugs.com and The BNF are good reference guides for this—and if it’s important to you, check both, in case of any disagreement, as they function under completely different regulatory bodies, the former being American and the latter being British. So if they both agree, it’s surely accurate, according to best current science).
Also: when you are on a medication, keep a journal of your symptoms, as well as a log of your vitals (heart rate, blood pressure, weight, sleep etc) so you know what the medication seems to be helping or harming, and be sure to have a regular meds review with your doctor to check everything’s still right for you. And don’t be afraid to seek a second opinion if you still have doubts.
Want to know more?
For a more in-depth exploration than we have room for here, check out this book that we reviewed not long back:
To Medicate or Not? That is the Question! – by Dr. Asha Bohannon
Take care!
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Blueberries vs Banana – Which is Healthier?
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Our Verdict
When comparing blueberries to banana, we picked the banana.
Why?
Surprise, that which is more expensive is not always commensurately more healthy! A lot of the price difference between bananas and blueberries comes down to:
- ease of transport (unripe bananas can be transported quite easily without too much risk of bruising; unripe blueberries can’t even be usefully picked)
- shelf-life (unripe bananas will take their time to ripen; the already-ripe blueberries will often go bad very quickly)
For this reason, frozen blueberries are a great option for budget-friendly berries. But, onto the comparisons:
In terms of macros, bananas have slightly more protein, carbs, and fiber, and the slightly lower glycemic index. Really, both are good, but by the numbers, bananas win.
When it comes to vitamins, blueberries have more of vitamins B1, C, E, and K, while bananas have more of vitamins A, B2, B3, B5, B6, B9, and choline. Another win for bananas, though of course we could quibble which vitamins are most likely to be not found in sufficient abundance in the rest of one’s diet, but as it is, we just compared the nutrients head-to-head without trying to guess the rest of someone’s diet.
In the category of minerals, blueberries have more calcium and manganese, while bananas have more copper, magnesium, phosphorus, potassium, and selenium. Another win for bananas.
As for polyphenols, this is where blueberries shine, with a lot more than bananas (difficult to calculate exactly due to variations, but, in the order of hundreds of times more). A win for blueberries this time.
Adding up the section gives us an overall win for bananas, but by all means enjoy either or both; perhaps even together!
Want to learn more?
You might like to read:
Blueberry & Banana Collagen Baked Oats ← You will love this recipe! And… Good news for vegans/vegetarians: while we include an optional tablespoon of collagen powder in this recipe, the whole recipe is already geared around collagen synthesis, so it’s very collagen-boosting even with just the plants, providing collagen’s building blocks of protein, zinc, and vitamins C and D (your miraculous body will use these to assemble the collagen inside you).
Enjoy!
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