Soy has been a popular food source for centuries, especially in Asia. It is commonly used in various dishes and products, including tofu, soy milk, and edamame. However, soy has also been a subject of numerous debates and controversies.

Some people believe that soy has negative effects on health, while others claim that it is a superfood with various health benefits.

In this article, we will debunk three common myths about soy, and provide evidence-based information to help you better understand this versatile food.

Myth #1: Soy Increases the Risk of Breast Cancer

One of the most common myths about soy is that it increases the risk of breast cancer.

This misconception arose from the fact that soy contains phytoestrogens – compounds that have a similar structure to estrogen and can potentially mimic its effects on the body.

However, the evidence does not support the claim that soy increases the risk of breast cancer. In fact, several studies have shown that the consumption of soy may have a protective effect against breast cancer.

A meta-analysis of 35 prospective studies found that women with the highest soy intake had a 14% lower risk of breast cancer compared to those with the lowest intake.

Another study found that soy intake was associated with a lower risk of breast cancer recurrence in women with early-stage breast cancer.

In addition, a study published in the Journal of the National Cancer Institute found that soy intake during adolescence may reduce the risk of developing breast cancer later in life.

Myth #2: Soy Causes Hypothyroidism

Another myth about soy is that it can cause hypothyroidism – a condition where the thyroid gland does not produce enough hormones to regulate the body’s metabolism.

This misconception arose from the fact that soy contains goitrogens – compounds that can interfere with the thyroid gland’s ability to produce hormones.

However, the evidence does not support the claim that soy consumption causes hypothyroidism. A review of multiple studies found that soy intake does not affect thyroid function in healthy individuals, even at high doses.

In fact, some studies suggest that soy may have a beneficial effect on thyroid function.

For example, a study published in the Journal of Clinical Endocrinology and Metabolism found that soy supplementation improved thyroid function in women with subclinical hypothyroidism.

Myth #3: Soy is a Genetically Modified Organism (GMO)

Finally, a common misconception about soy is that it is a genetically modified organism (GMO). While it is true that the majority of soy grown in the United States is genetically modified to be resistant to herbicides, not all soy products are GMO.

In fact, many organic and non-GMO soy products are available in the market. To ensure that you are consuming non-GMO soy, look for products that are certified organic or labelled as non-GMO.

It is important to note that GMOs have been a subject of controversy and debate, and their safety and potential health effects are still being studied.

Therefore, it is up to each individual to decide whether or not to consume GMOs based on their personal beliefs and preferences.

Conclusion

In conclusion, soy is a versatile food that has been a part of various culinary traditions for centuries.

While it has also been a subject of numerous debates and controversies, the evidence does not support some of the common myths associated with soy.

Studies suggest that soy consumption does not increase the risk of breast cancer or cause hypothyroidism. In fact, soy may have a protective effect against breast cancer and may improve thyroid function in some individuals.

Furthermore, while the majority of soy grown in the United States is genetically modified, there are non-GMO and organic soy products available in the market.

As with any food, the key is moderation and variety. Incorporating soy into a balanced diet can provide various health benefits and contribute to overall health and well-being.