Sun exposure: You can avoid skin cancer by limiting your cumulative sun exposure (the trigger for typically milder forms of skin cancer such as basal cell and squamous cell) and by avoiding sunburns (the trigger for the more lethal melanoma).
Radon in the basement man cave: You can have your basement tested for radon (the second leading cause of lung cancer). Lung cancer is rising in nonsmokers, and the increase is very likely due to a long list of environmental toxins we inhale.
Human papillomavirus (HPV): HPV causes more than 90% of cervical cancer. So when an HPV vaccine came out in 2006, it seemed that the benefit was primarily for women. The thinking was, since HPV is spread by sexual activity, young boys should also be vaccinated to prevent spreading the virus to female partners. Over time though, the list of cancers caused by HPV has grown to include penile cancer, anal cancer, and cancer of the back of the tongue and tonsils. It’s estimated that vaccination could prevent more than 90% of all HPV cancers, but vaccination works best if given before sexual activity begins. That’s why vaccination is recommended for all adolescents age 11 or 12, and is not recommended for adults older than 26, where the benefit is felt to be low.
Booze blues: Regular, heavier alcohol intake increases the risk of colon cancer, and together with smoking is the major cause of mouth and throat cancers.
Eat your fruits and vegetables, skip the supplements: We know that people who have a diet rich in fruits and vegetables have a lower incidence of cancer, but to date, no study has shown that taking vitamin supplements will lower your risk of cancer.
Pound for pound, extra ones increase the risk of cancer: Excess weight definitely increases the risk of getting cancer, and the reasons are not fully understood. Certainly, fat is a very hormonally active substance, and some of those hormones can cause inflammation, which is dry tinder for cancer. Fat also increases the levels of estrogen in the body, which might be why it increases the risk of breast cancer in postmenopausal women. Obesity also increases the chance of getting cancer of the esophagus, pancreas, uterus, kidney, thyroid, and gall bladder.
Yours in good health,
Craig L. Bowron, M.D.