What causes breast cancer?
Breast cancer is one of the most common malignant tumors in women. In recent years, its incidence has increased year by year, attracting widespread attention. Understanding the causes of breast cancer can help with early prevention and scientific treatment. This article will combine the hot topics and hot content on the Internet in the past 10 days to conduct a structured analysis of the causes of breast cancer.
1. Main causes of breast cancer
The causes of breast cancer are complex and involve multiple factors such as genetics, hormones, and lifestyle. The following are the main causes confirmed by research in recent years:
| Cause classification | specific factors | Relevant data or instructions |
|---|---|---|
| genetic factors | BRCA1/BRCA2 gene mutations | Women who carry mutated genes have a 60%-80% risk of developing cancer |
| hormonal factors | Estrogen levels are too high | Long-term use of birth control pills or hormone replacement therapy increases risk |
| lifestyle | Obesity, lack of exercise | Obese women have a 20%-40% higher risk than normal weight women |
| environmental factors | radiation, chemicals | Chest radiation exposure during adolescence significantly increases cancer risk |
2. Recent hot research and new discoveries
In the past 10 days, research and discussion on the causes of breast cancer have mainly focused on the following aspects:
| field of study | Latest findings | Data source |
|---|---|---|
| Microbiome Research | Breast tissue microbial imbalance may be linked to cancer development | The latest papers in the sub-journal of "Nature" |
| air pollution | Long-term exposure to PM2.5 may increase breast cancer risk | European Journal of Environmental Epidemiology |
| sleep mode | Working night shifts for more than 20 years increases the risk by 40% | American Institute for Cancer Research data |
3. Modifiable risk factors
Although some breast cancer risk factors cannot be changed (such as age, genetics), the following factors can reduce risk through lifestyle modifications:
| Modifiable factors | risk reduction ratio | specific suggestions |
|---|---|---|
| control weight | Can reduce risk by 20-30% | Keep your BMI between 18.5-24.9 |
| regular exercise | Can reduce risk by 10-20% | 150 minutes of moderate-intensity exercise per week |
| Limit alcohol | Can reduce risk by 5-10% | No more than 1 standard cup per day |
| breastfeeding | The risk decreases by 4% for every 12 months of breastfeeding | Breastfeeding is recommended for at least 6 months |
4. Common misunderstandings and expert interpretations
There have been a lot of discussions on the Internet recently about the causes of breast cancer, and there are some misunderstandings that need to be clarified:
1.Misunderstanding:Antiperspirant use may lead to breast cancer
fact:There is currently no reliable evidence to support this claim. The American Cancer Society makes it clear that the two are unrelated.
2.Misunderstanding:Only women get breast cancer
fact:Men can also get breast cancer, accounting for about 1% of all cases.
3.Misunderstanding:All breast lumps are cancerous
fact:About 80% of breast lumps are benign, but they still require prompt medical examination.
5. Early screening recommendations
Along with understanding the cause, regular screening is crucial for early detection of breast cancer:
| age group | Screening recommendations | Screening frequency |
|---|---|---|
| 40-44 years old | Option to start a mammogram | 1 time per year |
| 45-54 years old | Routine mammogram recommended | 1 time per year |
| Over 55 years old | Can be changed to once every 2 years or continue once a year | Once every 1-2 years |
Conclusion:
The onset of breast cancer is the result of the combined action of multiple factors. By understanding these causes, we can take targeted preventive measures to reduce the risk of disease. At the same time, maintaining regular screening habits will help early detection and early treatment. If you have any questions about breast health, you should consult a professional doctor promptly.
Recently, as the "Pink Ribbon" Breast Cancer Awareness Month approaches, the popularity of related topics continues to rise. It is recommended to pay attention to the latest guidelines issued by authoritative medical institutions to obtain scientific and accurate cancer prevention knowledge.
check the details
check the details
en
