Why are tall people more likely to get cancer? What we know, don’t know and suspect

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People who are taller are at greater risk of developing cancer. The World Cancer Research Fund reports there is strong evidence taller people have a higher chance of of developing cancer of the:

  • pancreas
  • large bowel
  • uterus (endometrium)
  • ovary
  • prostate
  • kidney
  • skin (melanoma) and
  • breast (pre- and post-menopausal).

But why? Here’s what we know, don’t know and suspect.

Pexels/Andrea Piacquadio
A tall woman and her partner are silhoutted against the sunset.
Height does increase your cancer risk – but only by a very small amount. Christian Vinces/Shutterstock

A well established pattern

The UK Million Women Study found that for 15 of the 17 cancers they investigated, the taller you are the more likely you are to have them.

It found that overall, each ten-centimetre increase in height increased the risk of developing a cancer by about 16%. A similar increase has been found in men.

Let’s put that in perspective. If about 45 in every 10,000 women of average height (about 165 centimetres) develop cancer each year, then about 52 in each 10,000 women who are 175 centimetres tall would get cancer. That’s only an extra seven cancers.

So, it’s actually a pretty small increase in risk.

Another study found 22 of 23 cancers occurred more commonly in taller than in shorter people.

Why?

The relationship between height and cancer risk occurs across ethnicities and income levels, as well as in studies that have looked at genes that predict height.

These results suggest there is a biological reason for the link between cancer and height.

While it is not completely clear why, there are a couple of strong theories.

The first is linked to the fact a taller person will have more cells. For example, a tall person probably has a longer large bowel with more cells and thus more entries in the large bowel cancer lottery than a shorter person.

Scientists think cancer develops through an accumulation of damage to genes that can occur in a cell when it divides to create new cells.

The more times a cell divides, the more likely it is that genetic damage will occur and be passed onto the new cells.

The more damage that accumulates, the more likely it is that a cancer will develop.

A person with more cells in their body will have more cell divisions and thus potentially more chance that a cancer will develop in one of them.

Some research supports the idea having more cells is the reason tall people develop cancer more and may explain to some extent why men are more likely to get cancer than women (because they are, on average, taller than women).

However, it’s not clear height is related to the size of all organs (for example, do taller women have bigger breasts or bigger ovaries?).

One study tried to assess this. It found that while organ mass explained the height-cancer relationship in eight of 15 cancers assessed, there were seven others where organ mass did not explain the relationship with height.

It is worth noting this study was quite limited by the amount of data they had on organ mass.

A tall older man leans against a wall while his bicycle is parked nearby.
Is it because tall people have more cells? Halfpoint/Shutterstock

Another theory is that there is a common factor that makes people taller as well as increasing their cancer risk.

One possibility is a hormone called insulin-like growth factor 1 (IGF-1). This hormone helps children grow and then continues to have an important role in driving cell growth and cell division in adults.

This is an important function. Our bodies need to produce new cells when old ones are damaged or get old. Think of all the skin cells that come off when you use a good body scrub. Those cells need to be replaced so our skin doesn’t wear out.

However, we can get too much of a good thing. Some studies have found people who have higher IGF-1 levels than average have a higher risk of developing breast or prostate cancer.

But again, this has not been a consistent finding for all cancer types.

It is likely that both explanations (more cells and more IGF-1) play a role.

But more research is needed to really understand why taller people get cancer and whether this information could be used to prevent or even treat cancers.

I’m tall. What should I do?

If you are more LeBron James than Lionel Messi when it comes to height, what can you do?

Firstly, remember height only increases cancer risk by a very small amount.

Secondly, there are many things all of us can do to reduce our cancer risk, and those things have a much, much greater effect on cancer risk than height.

We can take a look at our lifestyle. Try to:

  • eat a healthy diet
  • exercise regularly
  • maintain a healthy weight
  • be careful in the sun
  • limit alcohol consumption.

And, most importantly, don’t smoke!

If we all did these things we could vastly reduce the amount of cancer.

You can also take part in cancer screening programs that help pick up cancers of the breast, cervix and bowel early so they can be treated successfully.

Finally, take heart! Research also tells us that being taller might just reduce your chance of having a heart attack or stroke.

Susan Jordan, Associate Professor of Epidemiology, The University of Queensland and Karen Tuesley, Postdoctoral Research Fellow, School of Public Health, The University of Queensland

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

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  • Beetroot vs Cucumber – Which is Healthier?

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    Our Verdict

    When comparing beetroot to cucumber, we picked the beetroot.

    Why?

    While they’re both mostly-water vegetables that can go in salads, soups, and sauces, they have some notable differences:

    In terms of macros, beetroot has nearly 3x the carbs and/but also nearly 6x the fiber, so we say beetroot wins this category.

    On the vitamins front, beetroot has more of vitamins B1, B2, B3, B6, B7, B9, C, and E, while cucumber has more of vitamins A, B5, and K. In short, a clear win for beetroot.

    In the category of minerals, beetroot has more copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc, while cucumber is not richer in any minerals.

    When it comes to beneficial phytochemicals, both have good things to offer, though we say beetroot has more. Notably, cucumber extract beats glucosamine and chondroitin for reducing joint inflammation, at 1/135th of the dose. On the other hand, beetroot’s phytochemical benefits are so numerous we’ll not list them here, and just recommend checking out the link below!

    In short, a win in all categories for beetroot, but cucumbers are great too, so by all means enjoy either or both!

    Want to learn more?

    You might like to read:

    Beetroot For More Than Just Your Blood Pressure

    Enjoy!

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  • Pasteurization: What It Does And Doesn’t Do

    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.

    Pasteurization’s Effect On Risks & Nutrients

    In Wednesday’s newsletter, we asked you for your health-related opinions of raw (cow’s) milk, and got the above-depicted, below-described, set of responses:

    • About 47% said “raw milk is dangerous to consume, whereas pasteurization makes it safer”
    • About 31% said “raw milk is a good source of vital nutrients which pasteurization would destroy”
    • About 14% said “both raw milk and pasteurized milk are equally unhealthy”
    • About 9% said “both raw milk and pasteurized milk are equally healthy”

    Quite polarizing! So, what does the science say?

    “Raw milk is dangerous to consume, whereas pasteurization makes it safer: True or False?”

    True! Coincidentally, the 47% who voted for this are mirrored by the 47% of the general US population in a similar poll, deciding between the options of whether raw milk is less safe to drink (47%), just as safe to drink (15%), safer to drink (9%), or not sure (30%):

    Public Fails to Appreciate Risk of Consuming Raw Milk, Survey Finds

    As for what those risks are, by the way, unpasteurized dairy products are estimated to cause 840x more illness and 45x more hospitalizations than pasteurized products.

    This is because unpasteurized milk can (and often does) contain E. coli, Listeria, Salmonella, Cryptosporidium, and other such unpleasantries, which pasteurization kills.

    Source for both of the above claims:

    Characteristics of U.S. Consumers Reporting Past Year Intake of Raw (Unpasteurized) Milk: Results from the 2016 Food Safety Survey and 2019 Food Safety and Nutrition Survey

    (we know the title sounds vague, but all this information is easily visible in the abstract, specifically, the first two paragraphs)

    Raw milk is a good source of vital nutrients which pasteurization would destroy: True or False?

    False! Whether it’s a “good” source can be debated depending on other factors (e.g., if we considered milk’s inflammatory qualities against its positive nutritional content), but it’s undeniably a rich source. However, pasteurization doesn’t destroy or damage those nutrients.

    Incidentally, in the same survey we linked up top, 16% of the general US public believed that pasteurization destroys nutrients, while 41% were not sure (and 43% knew that it doesn’t).

    Note: for our confidence here, we are skipping over studies published by, for example, dairy farming lobbies and so forth. Those do agree, by the way, but nevertheless we like sources to be as unbiased as possible. The FDA, which is not completely unbiased, has produced a good list of references for this, about half of which we would consider biased, and half unbiased; the clue is generally in the journal names. For example, Food Chemistry and the Journal of Food Science and Journal of Nutrition are probably less biased than the International Dairy Association and the Journal of Dairy Science:

    FDA | Raw Milk Misconceptions and the Danger of Raw Milk Consumption

    this page covers a lot of other myths too, more than we have room to “bust” here, but it’s very interesting reading and we recommend to check it out!

    Notably, we also weren’t able to find any refutation by counterexample on PubMed, with the very slight exception that some studies sometimes found that in the case of milks that were of low quality, pasteurization can reduce the vitamin E content while increasing the vitamin A content. For most milks however, no significant change was found, and in all cases we looked at, B-vitamins were comparable and vitamin D, popularly touted as a benefit of cow’s milk, is actually added later in any case. And, importantly, because this is a common argument, no change in lipid profiles appears to be findable either.

    In science, when something has been well-studied and there aren’t clear refutations by counterexample, and the weight of evidence is clearly very much tipped into one camp, that usually means that camp has it right.

    Milk generally is good/bad for the health: True or False?

    True or False, depending on what we want to look at. It’s definitely not good for inflammation, but the whole it seems to be cancer-neutral and only increases heart disease risk very slightly:

    • Keep Inflammation At Bay ← short version is milk is bad, fermented milk products are fine in moderation
    • Is Dairy Scary? ← short version is that milk is neither good nor terrible; fermented dairy products however are health-positive in numerous ways when consumed in moderation

    You may be wondering…

    …how this goes for the safety of dairy products when it comes to the bird flu currently affecting dairy cows, so:

    Cows’ Milk, Bird Flu, & You

    Take care!

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  • Is Unnoticed Environmental Mold Harming Your Health?

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    Environmental mold can be a lot more than just the famously toxic black mold that sometimes makes the headlines, and many kinds you might not notice, but it can colonizes your sinuses and gut just the same:

    Breaking the mold

    Around 25% of homes in North America are estimated to have mold, though the actual number is likely to be higher, affecting both older and new homes. For that matter, mold can grow in unexpected areas, like inside air conditioning units, even in dry regions.

    If mold just sat where it is minding its own business, it might not be so bad, but instead they release their spores, which are de facto airborne mycotoxins, which can colonize places like the sinuses or gut, causing significant health issues.

    Not everyone in the same household is affected the same way by mold due to genetic differences and varying pre-existing health conditions. But as a general rule of thumb, mold inflames the brain, nerves, gut, and skin, and can negatively impact the vagal nerve, which is linked to the gut-brain connection. Mycotoxins also damage mitochondria, leading to symptoms like fatigue, brain fog, and cognitive issues. To complicate matters further, mold illness can mimic other conditions like anxiety, chronic fatigue, fibromyalgia, IBS, and more, making it difficult to diagnose.

    Testing is possible, though they all have limitations, e.g:

    • Home testing: testing the home for mold spores and mycotoxins is crucial for effective treatment; professional mold remediation companies are a good idea (to do a thorough job of cleaning, without also breathing in half the mold while cleaning it).
    • Mold allergy testing: mold allergy testing (IgE testing or skin tests) is often used, but it doesn’t diagnose mold-related illnesses linked to severe symptoms like fatigue or neurodegeneration.
    • Serum antibody testing: tests for immune reactions (IgG) to mycotoxins may not always show positive results if the immune system is weakened by long-term exposure.
    • Urine mycotoxin testing: urine tests can detect mycotoxins in the body, though are likely to be more expensive, being probably not covered by public health in Canada or insurance in the US.
    • Organic acid testing: this urine test can indicate mold colonization in areas like the sinuses or gut. Again, cost/availability may vary, though.

    For more information on all of this, enjoy:

    Click Here If The Embedded Video Doesn’t Load Automatically!

    Want to learn more?

    You might also like to read:

    Mythbusting Moldy Food

    Take care!

    Share This Post

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  • Walnut, Apricot, & Sage Nut Roast

    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.

    It’s important to have at least one good nut roast recipe in your repertoire. It’s something that’s very good for making a good dish out of odds and ends that are in your house, and done well, it’s not only filling and nutritious, but a tasty treat too. Done badly, everyone knows the results can be unfortunate… Making this the perfect way to show off your skills!

    You will need

    • 1 cup walnuts
    • ½ cup almonds
    • ¼ cup whole mixed seeds (chia, pumpkin, & poppy are great)
    • ¼ cup ground flax (also called flax meal)
    • 1 medium onion, finely chopped
    • 1 large carrot, grated
    • 4 oz dried apricots, chopped
    • 3 oz mushrooms, chopped
    • 1 oz dried goji berries
    • ½ bulb garlic, crushed
    • 2 tbsp fresh sage, chopped
    • 1 tbsp nutritional yeast
    • 2 tsp dried rosemary
    • 2 tsp dried thyme
    • 2 tsp black pepper, coarse ground
    • 1 tsp yeast extract (even if you don’t like it; trust us; it will work) dissolved in ¼ cup hot water
    • ½ tsp MSG or 1 tsp low-sodium salt
    • Extra virgin olive oil

    Method

    (we suggest you read everything at least once before doing anything)

    1) Preheat the oven to 350℉ / 180℃, and line a 2 lb loaf tin with baking paper.

    2) Heat some oil in a skillet over a moderate heat, and fry the onion for a few minutes until translucent. Add the garlic, carrot, and mushrooms, cooking for another 5 minutes, stirring well. Set aside to cool a little once done.

    3) Process the nuts in a food processor, pulsing until they are well-chopped but not so much that they turn into flour.

    4) Combine the nuts, vegetables, and all the other ingredients in a big bowl, and mix thoroughly. If it doesn’t have enough structural integrity to be thick and sticky and somewhat standing up by itself if you shape it, add more ground flax. If it is too dry, add a little water but be sparing.

    5) Spoon the mixture into the loaf tin, press down well (or else it will break upon removal), cover with foil and bake for 30 minutes. Remove the foil, and bake for a further 15 minutes, until firm and golden. When done, allow it to rest in the tin for a further 15 minutes, before turning it out.

    6) Serve, as part of a roast dinner (roast potatoes, vegetables, gravy, etc).

    Enjoy!

    Want to learn more?

    For those interested in some of the science of what we have going on today:

    Take care!

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  • Planning Festivities Your Body Won’t Regret

    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.

    The Festive Dilemma

    For many, Christmas is approaching. Other holidays abound too, and even for the non-observant, it’d be hard to escape seasonal jollities entirely.

    So, what’s the plan?

    1. Eat, drink, and be merry, and have New Year’s Resolutions for the first few days of January before collapsing in a heap?
    2. Approach the Yuletide with Spartan abstemiousness and miss all the fun while simultaneously annoying your relatives?

    Let’s try to find a third approach instead…

    What’s festive and healthy?

    We’re doing this article this week, because many people will be shopping already, making plans, and so forth. So here are some things to bear in mind:

    Make your own mindful choices

    Coca-Cola company really did a number on Christmas, but it doesn’t mean their product is truly integral to the season. Same goes for many other things that flood the stores around this time of year. So much sugary confectionary! But remember, they’re not the boss of you. If you wouldn’t buy it ordinarily, why are you buying it now? Do you actually even want it?

    If you really do, then you do you, but mindful choices will invariably be healthier than “because there were three additional aisles of confectionary now so I stopped and looked and picked some things”.

    Pick your battles

    If you’re having a big family gathering, likely there will be occasions with few healthy options available. But you can decide what’s most important for you to avoid, perhaps picking a theme, e.g:

    • No alcohol this year, or
    • No processed sugary foods, or
    • Eat/drink whatever, but practice intermittent fasting

    Some resources:

    Fight inflammation

    This is a big one so it deserves its own category. In the season of sugar and alcohol and fatty meat, inflammation can be a big problem to come around and bite us in the behind. We’ve written on this previously:

    Keep Inflammation At Bay

    Positive dieting

    In other words, less of a focus on what to exclude, and more of a focus on what to include in your diet. Fruity drinks and sweets are common at this time of year, but you know what’s also fruity? Fruit!

    And it can be festive, too! Berries are great, and those tiny orange-like fruits that may be called clementines or tangerines or satsumas or, as Aldi would have it, “easy peelers”. Apple and cinnamon are also a great combination that both bring sweetness without needing added sugar.

    And as for mains? Make your salads that bit fancier, get plenty of greens with your main, have hearty soups and strews with lentils and beams!

    See also: Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)

    Your gut will thank us later!

    Get moving!

    That doesn’t mean you have to beat the New Year rush to the gym (unless you want to!). But it could mean, for example, more time in your walking shoes (or dancing shoes! With a nod to today’s sponsor) and less time in the armchair.

    See also: The doctor who wants us to exercise less; move more

    Lastly…

    Remember it’s supposed to be fun! And being healthy can be a lot more fun than suffering because of unfortunate choices that we come to regret.

    Take care!

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  • Enjoy Bitter Foods For Your Heart & Brain

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    When Bitter Is Better

    A good general rule of thumb for “does this food contain a lot of healthy polyphenols?” is:

    “is this (edible) plant bitter/astringent/pungent”?

    If it is, it’s probably rich in polyphenols:

    Deciphering the role of bitter and astringent polyphenols in promoting well-being

    …which is why it’s no surprise that black coffee and bitter chocolate score highly, as do hot peppers and even garlic.

    See also: Our Top 5 Spices: How Much Is Enough For Benefits?

    Even fruits, generally considered something sweet to eat, often contain more polyphenols when they are bitter—many berries are great examples of this!

    Read more: Goji Berries: Which Benefits Do They Really Have?

    You can read more about the science of this here:

    Sensory Nutrition and Bitterness and Astringency of Polyphenols

    Important for multiple reasons (including heart and brain health)

    Polyphenols have many benefits, and they’re most well known for their heart-healthy properties, but their antioxidant effect (and other mechanisms) also means these foods are generally neuroprotectants too:

    A century of research shows eating these compounds can help protect against heart disease and Alzheimer’s

    The science of this is not all as obvious as you might think!

    It is reasonable to expect “ok, this has antioxidant effect, so it will reduce oxidative damage to brain cells too”, and while that is true (and yes, polyphenols do cross the blood-brain barrier), they also help in other ways, including through the gut:

    Where to Look into the Puzzle of Polyphenols and Health? The Postbiotics and Gut Microbiota Associated with Human Metabotypes

    What if I don’t like bitter/astringent/pungent foods?

    If you do not have a medical condition that proscribes them (do check with your doctor if unsure), the best advice is to simply eat them anyway, and your tastes will adapt.

    It will also help if you avoid sweet foods (though this too is also a good general rule of thumb!), as this will move the balance of where your brain’s “set range” is for “good taste”.

    Bonus tip: dark chocolate (80%+ cocoa if possible, 95% if you can get it) and chilli peppers go great with each other. Here’s an example of a chilli chocolate product on Amazon; it’s 70% cocoa (which is not bad, but could be better). You might be able to get a higher percentage locally, especially if you ask your local chocolatière, or make it yourself!

    Enjoy!

    Don’t Forget…

    Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

    Learn to Age Gracefully

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