From August 2065438 to August 2009, The Lancet magazine published a meta-analysis to demonstrate the relationship between breast cancer and estrogen. The results show that people with abnormal or increased estrogen secretion and receiving a lot of exogenous estrogen not only have higher risk of breast cancer, but also have higher mortality after cancer.
The estrogen secretion level of women fluctuates greatly between 40 and 60 years old, before and after menopause, so this period is also the high incidence age of breast cancer. Exercise helps to reduce the free estrogen in the blood, and can also discharge some substances needed for estrogen synthesis by promoting metabolism, so as to keep the estrogen secretion level in a relatively stable state.
2 Reduce the risk of obesity and hyperlipidemia
Obesity and hyperlipidemia will have a great influence on the secretion of various hormones in human body, which will lead to atypical hyperplasia of breast, such as atypical hyperplasia of mammary ducts and lobules.
In addition, hyperlipidemia is easy to change the basic energy metabolism of human body, and a large amount of estrogen may be synthesized in excess fat, which increases the chance of breast cancer. Postmenopausal obese women should be especially alert to the risk of breast cancer.
Exercise can obviously improve the basic metabolic efficiency of human body, and can convert excess glycogen, cholesterol and fat into energy consumption, thus avoiding obesity and hyperlipidemia.
3 can enhance immunity.
Modern research shows that repeated inflammation will cause a lot of cell damage, and the possibility of gene mutation will increase during the repair process, which is one of the root causes of many cancers.
People who don't like sports can't discharge a lot of waste substances produced by oxidation and metabolism in their bodies efficiently, so they are easy to accumulate and bring great burden to the immune system. After a long time, various tissues are more prone to inflammation, including breasts.
During exercise, the circulation of carbon dioxide and oxygen in the human body is accelerated, and a large amount of waste generated by oxidation is discharged, which not only makes people feel less tired, but also can repair the immune system, reduce the inflammatory attack and enhance the lethality of immune cells to cancer cells.
4. Improve heart function
In fact, breast health is also related to heart function. According to a research report published in NatureMedicine, cardiovascular diseases will increase the mortality rate of breast cancer, and the mortality rate of breast cancer patients with heart disease is 60% higher than that of breast cancer patients without heart disease.
Exercise can effectively improve the systolic and diastolic functions of myocardium and cardiovascular system and stabilize blood pressure. When the heart remains healthy, the blood circulation of the breast can also remain stable, which is conducive to protecting the health of breast cells.