Breast is an important organ for women, not only as a secondary sexual characteristic but also for reproductive purposes. However, breasts are susceptible to various issues such as breast hyperplasia, breast nodules, and even breast tumors, especially in women over 40 years old. 

Therefore, it is essential to protect the breasts.

To protect the breasts, women should regularly check for any abnormalities. Self-examination can be done by assessing the hardness and borders of any nodules. Soft nodules with clear borders and good mobility are generally benign, while hard nodules with unclear borders and poor mobility may indicate malignancy. If self-examination is inconclusive, professional examinations like ultrasound should be conducted.

In terms of diet, it is advisable to avoid oily and greasy foods such as fried chicken or burgers, as they increase fat content and cholesterol levels, leading to hormonal imbalance and breast nodules. Instead, a diet rich in fresh vegetables, fruits, and whole grains should be encouraged as they help digestion and maintain hormonal balance. Additionally, it is crucial to stay away from hormone-related substances.

Excessive estrogen production contributes to the formation of nodules. 

Therefore, consumption of hormone-containing food like royal jelly or propolis and the careless use of contraceptives should be minimized. Using cosmetics with pure plant ingredients is also recommended. Emotional well-being is closely related to breast health.

Prolonged negative emotions can disrupt hormonal balance, leading to excessive estrogen production and affecting breast health. Therefore, it is important to learn how to manage emotions and consider using liver-regulating herbal medicines like goji berries, dandelions, and cassia seeds. 

Lastly, maintaining a regular lifestyle is essential.

Neglecting rest and frequently staying up late can disrupt the body's hormonal balance and affect breast health. Therefore, it is crucial to balance work and rest. In conclusion, to protect the breasts effectively, women should perform self-examinations, maintain a healthy diet, avoid hormone-related substances, manage emotions, and adhere to a regular lifestyle. Taking a comprehensive approach is key to breast health.