Many Americans face barriers to physical activity, according to researchers, including lack of time due to long hours in low-wage jobs; the cost of gym memberships or personal equipment; lack of access to a safe exercise setting; and childcare costs. Such barriers are more common among certain groups of people, including Black Americans and those with low incomes, according to study leader Adair Minihan, of the American Cancer Society, and colleagues. However, new research suggests that finding time to squeeze exercise weekly can be extremely beneficial.
Just a few hours a week of moderate exercise may reduce your risk of cancer, a new study suggests.
If Americans got the recommended five hours a week of moderate-intensity physical activity, more than 46,000 cancer cases could be prevented in the United States each year, according to the report.
The study authors said that 3% of all cancer cases in U.S. adults aged 30 and older from 2013 to 2016 were attributable to inactivity. More inactivity-related cancer cases occurred in women (almost 33,000) than in men (nearly 14,300) each year.
How does exercise reduce the risk of cancer?
There are many ways exercise can reduce the risk of cancer. The following are most notable:
- Bowel cancer: exercise can help waste pass through more quickly, reducing contact with cancer-causing agents.
- Breast cancer: high activity levels may lower the level of oestrogen in the body.
- Tumor growth: active bodies produce less insulin and insulin-like growth factors that speed tumor growth.
Additionally, exercise can reduce your risk of developing the following cancers:
- Breast cancer
- Endometrial cancers
- Esophageal cancer
- Liver cancer
- Stomach cancer
- Kidney cancer
- Myeloid leukemia
- Multiple myeloma
- Blood cancer
- Cancers of the head and neck, rectum, and lung (in current and former smokers)
How can you be more active every day?
For moderate exercise, all you need is