You don’t kick the smokers out(side)
Maybe you think you’re being gracious by allowing others to engage in that nasty smoking habit in your home, or perhaps you’re trying to avoid an argument—whatever your reason, it’s not a good one. Smoke coming off the end of a burning cigarette releases hundreds of toxic chemicals into your house air. Of those chemicals, about 70 can cause cancer. Cigars are even worse: a large one emits about the same amount of secondhand smoke as an entire pack of cigarettes. So stop the whole host-with-the-most thing. Have the argument with your friend or grandmother or whoever, and ask the smokers to do their deed outdoors. There is no “safe amount” of secondhand smoke; even low levels can be harmful, according to government reports. Inhaling it can cause lung cancer in nonsmoking adults, and some research suggests secondhand smoke may also increase the risk of breast cancer. Check out these reassuring things scientists wish you knew about cancer.
That extra fat tissue does more than make your clothes not fit: It produces excess amounts of estrogen and other hormones that may stimulate cell growth and proliferation (the more often cells divide, the more opportunities cancer has to develop). Obesity may also cause chronic inflammation, which over time can damage DNA and is one of the things that cause cancer. Obesity is associated with an increased risk of colon, breast (in women who have been through menopause), and endometrial cancer, among several others. Right now more than one-third of U.S. adults are obese; if existing trends continue, projections from the National Cancer Institute estimate by 2030, there may be as many 500,000 new cancer cases, all linked to obesity.