Should breast cancer survivor avoid soy


Although research is ongoing, there is little evidence to suggest that there is danger in consuming moderate amounts of soy in food even for survivors. However, until more is known it is probably best to avoid soy supplements after a breast cancer diagnosis.

Soy foods. Current research supports including soy foods in the diet of cancer survivors and does not suggest harmful effects, even for those experiencing estrogen-receptor

Estrogen receptors (ERs) are a group of proteins found inside cells. They are receptors that are activated by the hormone estrogen (17β-estradiol). › wiki › Estrogen_receptor

positive breast cancer.


Why soy is not healthy?

Soy is one of the top allergenic foods in part because it resembles gluten on a molecular level. If you have a gluten sensitivity, your body can’t distinguish between gluten and soy. Your body could react to each food with the same immune response.

Can eating soy cause breast cancer?

These studies on humans have not confirmed a link between eating natural soy and developing breast cancer. In fact, some actually dispute it and even suggest a protective effect. For example, one 2010 study found no association between phytoestrogen consumption (which includes soy products) and an increased risk for breast cancer.

Does eating soy cause cancer?

The American Cancer Society’s dietary guidelines note that consumption of soy foods is not only safe but “may even lower breast cancer risk.” Another study in the journal Nutrition & Metabolism has also shown that increased soy consumption correlates to a reduced risk of prostate cancer for men. 10.

Is eating too much soy bad?

Too much of anything, even if it’s healthy, could have adverse side effects and lead to health problems. That being said, it’s very difficult to overeat soy. Men in Asian countries, especially Japanese men, consume the most soybeans globally, and some eat anywhere between 60-120 grams of soy per day without any adverse side effects .


Why is soy important?

This is important because soy has long been a part of many Asian cuisines, but it is a relatively new introduction to the American diet. These studies are observational. This means researchers collect diet information from women, then follow them for many years to see who gets breast cancer.

Why do women eat soy?

For example, women who eat soy foods also may eat less fried food and more vegetables. They may exercise more and maintain a healthier body weight. Any one of these other things could be the reason why soy-eating women have lower breast cancer risk.

Is soy a phytoestrogen?

Some soy nutrients—the isoflavones—have chemical structures that look a bit like the estrogen found in a woman’s body. This is where the term phytoestrogen originated. However, phytoestrogens are not the same thing as female estrogens. Soy foods do not contain estrogen.

Can you eat soy milk if you have breast cancer?

Summary: The current consensus among health experts who study soy is that breast cancer survivors can safely eat these foods. Emerging research suggests that soy foods may decrease the likelihood of breast cancer recurrence in women with a history of the disease.

Is soy good for breast cancer?

In an observational study, it is always possible that the true connection with better breast health is not soy, but something else that is related to eating soy.

Does soy have isoflavone?

Soy or isoflavone supplements, on the other hand, generally contain higher levels of isoflavones. Some studies have suggested a link between soy or isoflavone supplements and an increased risk of breast cancer in women who have a family or personal history of breast cancer or thyroid problems.

Does soy cause cancer?

Soy contains protein, isoflavones and fiber, all of which provide health benefits. It was once thought that soy foods increase the risk of breast cancer. However, eating a moderate amount of soy foods does not increase risk of breast cancer — or other types of cancer.

Does soy help with breast cancer?

Studies show that a lifelong diet rich in soy foods reduces the risk of breast cancer in women. This protective effect is less dramatic for women who eat less soy or who start eating soy later in life. Soy contains protein, isoflavones and fiber, all of which provide health benefits.

Does soy protein help with heart disease?

Early research indicated that soy protein could lower LDL ( bad) cholesterol, but later studies were so unimpressive that the American Heart Association asked that food companies no longer be allowed to label soy products as helpful in preventing heart disease. It’s still unclear whether soy does much for bones or hot flashes. And although some studies suggest that it may protect against breast cancer, other research has found that isoflavones (a component of soy that binds to estrogen receptors) can spur the growth of breast cancer cells in test tubes and animals. There’s also some concern that soy’s estrogenic activity may interfere with tamoxifen, a drug used to prevent recurrence in women with estrogen-sensitive breast cancer. As a result, some clinicians advise patients with breast cancer to limit their consumption of soy or avoid it altogether.

Is soy good for women?

At one time, soy seemed to be just the ticket for women: heart-healthy, good for bones, and helpful for hot flashes. And then there was the low rate of breast cancer in soy-consuming countries. But as so often with “miracle foods,” closer study has dampened some of the enthusiasm.

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What are some myths about soy?

1. Myth: All soy foods raise your risk for breast cancer. There’s no need to banish tofu and edamame from your diet.

What foods did the Chinese study include?

The soy foods that the study included were tofu, soy milk, and fresh soybeans. As you might expect, the Chinese women ate far more of it than those in the U.S. The results still held when the researchers considered that fact. 5. Myth: Soy only affects breast cancers that are sensitive to estrogen.

Does soy cause breast cancer?

Some experts worried that soy might interfere with breast cancer drugs that lower estrogen levels, such as tamoxifen.

Can you eat soy if you have breast cancer?

Myth: If you have or had breast cancer, avoid all soy foods. Just as eating a moderate amount of whole soy doesn’t make you more likely to get breast cancer, it also doesn’t seem to raise your risk for recurrence. “Still, I’d recommend that breast cancer patients avoid soy supplements,” Millstine says.

Does soy block estrogen?

Experts now believe that soy isoflavones may actually block estrogen from attaching to breast cancer cells instead of spurring growth like once thought. Meyers notes that many of the hallmark studies are done in Asian countries, where people grow up eating soy in its traditional forms.

Is it safe to eat soy?

Myth: Eat soy to protect against breast cancer. While eating a moderate amount of soy is fine, it’s too soon to suggest eating more to protect your breasts. “The results are promising, but there’s still not enough information,” Meyers says.

Does soy affect the body?

Myth: All types of soy have the same effect on the body. Your body may process the natural soy in tofu, miso, and soy milk differently than the kind that’s added to processed foods. The soy protein isolate found in supplements, protein powders, and meat substitutes is usually stripped of nutrients, such as fiber.

What is the serving size of soy?

Examples of serving sizes for soy foods are ½ cup of edamame , 1 cup of soy milk or ¼ cup of tofu. The bottom line is that soy foods like edamame, tofu and unsweetened soy milk can safely be included as an alternative protein or dairy source, even for those going through cancer treatment.

Is soy good for cancer?

Current research continues to support inclusion of soy foods in the diet for general cancer prevention and for people with cancer. When deciding about inclusion of soy in your diet, it can be helpful to think about three distinct categories of soy products: Soy Foods like edamame, tofu and unsweetened soy milk.

Is soy milk safe for cancer patients?

On one hand, consuming soy foods like edamame, tofu and unsweetened soy milk have been shown to reduce the risk of certain cancers such as breast cancer, prostate cancer and gastric cancer. On the other hand, questions about the potential estrogenic activity of soy can lead to confusion about the safety of eating soy foods, …

Does soy make estrogen?

Soy contains compounds called phytoestrogens. It is important to realize that when people eat soy it does not turn into estrogen in the body. Phytoestrogens, specifically genistein and daidzein, are structurally different and significantly weaker than human estrogen. No one food, soy included, is capable of single-handedly disrupting hormones linked to cancer growth. Nonetheless, non-evidence based sources make claims about soy that can create unnecessary fear amongst cancer patients. Let’s take a closer look at the scientific research to date.

Is it safe to eat soy milk with breast cancer?

The take home message regarding soy and cancer is that eating tofu stir-fry, an edamame appetizer or having unsweetened soy milk as a replacement for dairy is safe for cancer survivors. This is true for women with estrogen-receptor positive breast cancer and all others.

Does soy protein help cancer?

The effect of soy protein supplements and soy-derived protein powders on cancer growth is less clearly understood. This type of powder is typically used to make a smoothie or shake but can also be the source of protein in nutrition bars, certain pre-packaged frozen veggie burgers and vegetarian/vegan meat alternatives.

Does soy cause cancer?

No one food, soy included, is capable of single-handedly disrupting hormones linked to cancer growth. Nonetheless, non-evidence based sources make claims about soy that can create unnecessary fear amongst cancer patients. Let’s take a closer look at the scientific research to date.

Does soy cause breast cancer?

In some animal studies, rodents that were exposed to high doses of compounds found in soy called isoflavones showed an increased risk of breast cancer. This is thought to be because the isoflavones in soy can act like estrogen in the body, and increased estrogen has been linked to certain types of breast cancer.

Does soy affect estrogen?

Also, doses of isoflavones in the animal studies are much higher than in humans. In fact, in human studies, the estrogen effects of soy seem to either have no effect at all, or to reduce breast cancer risk (especially in Asian countries, where lifelong intake is higher than the US). This may be because the isoflavones can actually block the more potent natural estrogens in the blood.

Is soy bad for you?

So far, the evidence does not point to any dangers from eating soy in people, and the health benefits appear to outweigh any potential risk. In fact, there is growing evidence that eating traditional soy foods such as tofu, tempeh, edamame, miso, and soymilk may lower the risk of breast cancer, especially among Asian women.

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