The Link Between Breastfeeding and Lower Breast Cancer Risk

Recently, many studies and research suggest that breastfeeding can offer significant health benefits to the mother and babies, especially lowering the risk of breast cancer development. While there is no single lifestyle change that can guarantee the prevention of any type of cancer, there is some evidence suggesting that breastfeeding plays a vital role in minimizing the risk of developing breast cancer.

In this blog, we’ll explore how breastfeeding prevents the risk of breast cancer and its role in reducing the risk.

How does breastfeeding reduce breast cancer risk?

There is much extensive breast cancer research showing the connection between breastfeeding and breast cancer prevention, which is not just a coincidence. But here is some evidence; that's why it's lowering the risk of this cancer in breastfeeding women.

Here are some biological mechanisms that are working behind this, including:

Hormonal changes

During the breastfeeding period, the body undergoes many hormonal changes, especially a decrease in estrogen levels. Estrogen is a hormone that has higher levels, and it can fuel the growth of cancer cells in the breasts. By breastfeeding, many women might experience prolonged periods of low estrogen levels, which might reduce the risk of developing this cancer. 

Cellular changes in the Breast tissue

The breastfeeding process often changes the structure of breast tissue. It often transforms the structure of breast cells, makes them more mature and less likely to become cancerous. This is an immense change which could make it harder for any abnormal cells to develop and multiply, which further results in a decrease in cancer risk.

Delayed ovulation

Breastfeeding, when done exclusively, delays the return of the ovulation process (the release of eggs from the ovaries). The production of eggs is often associated with hormone fluctuations like those of estrogen and progesterone. The suppression of ovulation means that there are fewer hormone-driven cycles, which generally reduces the overall exposure to these types of hormones, linked to the breast cancer risk.

Breastfeeding’s impact on weight

Some studies have also suggested that maintaining a healthy weight is a key factor for reducing the risk of this cancer. In some women, breastfeeding can lead to weight loss after the delivery. Additionally, excessive body fat, especially after menopause, can also increase the risk due to some estrogen stored in the fat cells. Breastfeeding in women also regulates body weight and, in turn, reduces the cancer risk.

Importance of breastfeeding duration and exclusivity

Women who practice breastfeeding their babies seem to get some level of protection against breast cancer development. The more a woman breastfeeds, the greater the effects of potential protection. Many studies have suggested that there is an optimal benefit that appears to come from breastfeeding for 12 months, with exclusive breastfeeding being even more protective. 

However, the benefits often accumulate over time, so even partial breastfeeding can contribute to the reduction of this cancer risk.

Risk reduction across different types of Breast Cancer

Many studies have suggested that breastfeeding provides a protective effect for all major breast cancer types, but the degree of prevention and protection varies in women. These may be more effective and stronger for hormone-receptor-negative breast cancers, such as triple-negative, rather than hormone-receptor-positive ones.

Subtype - specific risk reduction 

Hormone Receptor- Negative:

Breastfeeding is especially considered effective in reducing the risk of triple-negative breast cancer type (TNBC), which is a type of hormone receptor negative cancer, by about 20%.

Hormone Receptor- Positive :

While the effect on ER positive(ER+) cancers might be less when compared to ER negative (ER-) cancers, there is some more evidence which suggests a risk reduction for these types due to breastfeeding.

Beyond breastfeeding: factors influence breast cancer prevention

It’s important to remember that breastfeeding is one factor that reduces the risk of developing breast cancer. It’s indeed a natural way to prevent the risk of developing this cancer. While there are other factors, including genetics, lifestyle choices, and environmental factors, they play a vital role. 

There are some lifestyle changes that help to reduce the risk of developing these cancers, including:

• Maintain a healthy weight
• Practicing regular physical exercise
• Limit or restricting alcohol consumption
• Avoiding tobacco use
• Eating a balanced, healthy diet

Practice performing regular self-examinations and mammograms, along with regular checkups with a healthcare provider, that are essential for early detection and prevention. 

It's important to note that breastfeeding is not the only option that influences lowering the risk of breast cancer development. While it's a natural process that is accessible and reduces the risk, it also offers benefits to both the mother and babies from many other health conditions. Whether you breastfeed for a few months or a few years, everything matters for the prevention of these cancers.

Consult Today

Breastfeeding offers numerous benefits to the mother and child. It has the potential to reduce the risk of breast cancer, which is one of the significant advantages of breastfeeding. Whether you are a breastfeeding mother or not, taking more informed decisions about breastfeeding and understanding its protective effects can help you take proactive steps while managing your health.

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If you or any loved ones of yours are diagnosed with cancer, then visit Oncare Cancer Center and book an appointment with our experienced cancer specialist today! Get an estimated cost of your cancer treatments today!