Study finds strong association between exercise and lower cancer risk – PerfScience

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Regular exercise offers long term health benefits and a new research has linked regular physical activity to lower risk of 13 types of cancers. The large review of several health studies has found yet another advantage of indulging into exercise. It has been found that exercise may reduce risk of many types of cancer and some chronic diseases.

Researchers who have based their findings on the assessment of 1.4 million adults have affirmed that even working out for some hours in a week is sufficient to lessen the risk of breast, colon and lung cancer. These are three of the four major cancers, which affect Americans today, said Marilie Gammon, professor of epidemiology at the University of North Carolina at Chapel Hill Gillings School of Public Health.

Study’s lead researcher Steven Moore, an investigator with the US National Cancer Institute, said that as you increase you hours of exercise, your cancer risk also continues to decline. Moore said that a simple concept is the more activity, the more is the benefit.

Regular exercise was linked to reduced risk of 13 cancers in all. Other cancers were leukemia, myeloma and cancers of the esophagus, liver, kidney, stomach, endometrium, rectum, bladder, and head and neck.

In the study, the researchers have focused on leisure-time physical activity performed outside work or household chores. The researchers have gathered data from 12 US and European studies to have a database of 1.4 million adults, aged 19 to 98. Main aim of the researchers was to examine whether self-reported physical activity made a different in risk of 26 cancers.

As per the researchers, exercise was linked with reduced risk for half of the cancers that were considered by the investigators. The reduction was witnessed in nearly all types, even after including factors like obesity and smoking history.

A higher level of physical activity was associated with a 7% reduced risk of total cancer. The research published in the journal JAMA Internal Medicine suggests that physical activity may play a role in population-wide cancer prevention efforts.

As per the research paper published by the study team, “Part of the Affordable Care Act is designed to help health care providers identify strategies to encourage the population to live healthier and prevent breast cancer and heart disease,” said Julie M. Kapp, associate professor in the Department of Health Management and Informatics in the MU School of Medicine. “But before we can develop these targeted approaches, we have to understand the perceptions and behaviors of our audience — in this case, premenopausal women.”

Breast cancer is a leading cause of death for females in the U. S. where one in 30 women will die of breast cancer. The death rate for heart disease is significantly higher at one in seven. Obesity remains at the top of health care providers’ concerns.

“The pink ribbon is one of the most recognizable symbols in the world and is associated with a very effective campaign, which might relate to the perception that breast cancer is a more common killer than other women’s health issues,” Kapp said. “Perhaps because of this, we found that minority women and women with a college education or less had greater odds of believing that breast cancer, rather than heart disease, causes more deaths in women yearly. Additionally, a quarter of the women surveyed reported that they are not making healthy lifestyle changes related to breast health, even though premenopausal women have the most to gain in knowledge and behaviors over their lifetime.”

According to a story published on the topic by NBC News, Exercise has all sorts of benefits, Moore said. “it can help people reduce their risk of heart disease. It can reduce the risk of diabetes. It extends life expectancy. And now it appears that it may reduce the risks of some cancers.” “Furthermore, our results support that these associations are broadly generalizable to different populations, including people who are overweight or obese, or those with a history of smoking.”

Obesity is a well-known risk factor for cancer, but exercise protected even obese people from cancer, the study found. On average, the people in the study were slightly overweight. “This finding may help encourage those who are overweight or obese to be physically active,” Moore’s team wrote.

A report published in Med Scape revealed, Indicate that higher levels of physical activity reduced the risk of developing cancer in 13 of the 26 cancers reviewed. For that group of 13 cancers, the risk reduction ranged from 10% to 42%. The affected cancers were esophageal adenocarcinoma (hazard ratio [HR], 0.58), liver cancer (HR, 0.73), lung cancer (HR, 0.74), kidney cancer (HR, 0.77), gastric cardia cancer (HR, 0.78), endometrial cancer (HR, 0.79), myeloid leukemia (HR, 0.80), myeloma (HR, 0.83), colon cancer (HR, 0.84), head and neck cancer (HR, 0.85), rectal cancer (HR, 0.87), bladder cancer (HR, 0.87), and breast cancer (HR, 0.90). The cancers with risk not positively affected by physical activity included those of the prostate and melanoma.

The first, he explained, is via sex hormones. Previous studies have shown, for example, that estrogens occur in lower levels in physically active women. “The second hypothesis is related to insulin, which is that active people have lower levels of insulin, and insulin itself maybe a cancer risk factor,” he said. The third is connected to inflammation, with studies indicating that exercise is linked to lower levels of inflammatory markers, and that inflammation “is a general cancer risk factor.”

Study finds strong association between exercise and lower cancer risk – PerfScience