Both here in the US and around the world, obesity rates continue to climb. Today, for the first time, more people are classified as obese than underweight, finds a major new study published in The Lancet.
The findings have severe implications for cancer rates. Aside from not smoking, staying a healthy weight is the single largest risk factor related to cancer risk. AICR research links excess body fat to ten cancers, including colorectal, postmenopausal breast and esophageal.
Here in the US, if everyone were a healthy weight, AICR estimates that approximately 128,000 cases of cancer could be prevented each year.
For postmenopausal women who are overweight, it makes sense that losing weight could reduce their risk of breast cancer because being overweight or obese increases the risk. But when overweight women are working to shed pounds, is it primarily exercise or cutting calories that makes more of a difference in lowering the risk?
Both, suggests a new study, with weight loss fueled primarily by exercise possibly leading to even more benefits – at least in the short-term for certain markers of breast cancer.
The study is one of the few randomized controlled trials that focuses on teasing apart the effect of diet versus exercise on breast cancer risk. It was published this week in Cancer Epidemiology, Biomarkers & Prevention.
Previous research has shown that too much fat tissue can place the body in a constant state of inflammation. That leads to high levels of hormones and other proteins that can spur cancer cell growth. How exercise alone can affect inflammation and hormones is one of the big questions under study. Continue reading
You probably know fruits and vegetables are packed with all kinds of nutrients, and compounds linked to good health. One of the biggest groups of these compounds or phytochemicals are the flavonoids, and we talk about them a lot here because they’re studied for their role in lowering cancer risk.
Now comes a large and long-term study that suggests eating plenty of berries, pears, peppers and other fruits and vegetables high in flavonoids may help you avoid weight gain as you age. That can help prevent overweight or obesity, and that’s a big deal for cancer prevention.
The study, published in BMJ, included almost 124,000 people who were part of three population studies that were looking at habits and health. Back in 1986, participants had reported what they were eating, along with other lifestyle habits, such as smoking and activity. They also reported how much they weighed. Every couple years every again filled out questionnaire about their eating habits, using a detailed list of foods, along with weight and illness. Continue reading