Americans’ love affair with vitamins—more than half of us take one a day—isn’t well supported by science. Trials of single vitamins, like E, C, and beta carotene, have been a bust. Whether multivitamins offer any health benefits has been something of a mystery. Now a new report indicates that taking a standard multivitamin-multimineral pill every day for more than a decade reduces the odds of developing cancer by 8%. The finding comes from the Physicians’ Health Study II, a Harvard-based trial in which nearly 15,000 male physicians took a daily pill containing 31 vitamins and minerals (Centrum Silver) or a placebo. The reduction could be due to fixing micronutrient deficiencies. It’s also possible that low doses of several vitamins and minerals might work together in other ways to prevent cancer. A daily multivitamin-multimineral supplement can provide some nutritional insurance, but it’s no replacement for vegetables, fruits, whole grains, and other healthful foods.
For years researchers have been trying to weigh the benefits of finding early breast cancers against the risks related to false positives (the spots that turn out to be harmless). This work has sparked some bitter public debates and confusion for women over flip-flopping recommendations. The latest salvo comes from a review of the results of mammograms among more than 12 million women in 18 European countries. The results support the idea that routine mammograms can prevent deaths from breast cancer without causing undue harm. The findings support the U.S. Preventive Services Task Force’s recommendation that women between the ages of 50 and 74 have a mammogram every other year. Women at higher risk of developing breast cancer may need mammograms earlier than age 50, or more often than every other year.
Based on data presented this week at the Union for International Cancer Control meeting in Montreal, a startling 40% of cancers may stem from modifiable causes, such as diet, exercise, tobacco and alcohol exposure, and appropriate screening. Although adapting a healthy lifestyle isn’t an ironclad guarantee against cancer, it can help lower a person’s individual risk.
Although dying is a fact of life, few people want to think about it. One group that must think about dying are people with advanced cancer who are told they have just a few months to live. What helps them end their days as peacefully as possible? A new study from Harvard-affiliated Dana-Farber Cancer Center and Brigham and Women’s Hospital found that being at home instead of in the hospital, talking with a chaplain or other minister, and spending time in private religious activity helped achieve this. When it’s clear that there’s no stopping cancer, heart failure, or other conditions, palliative care can help create a situation that maintains quality of life and leads to a “good death.”
The U.S. Preventive Services Task Force (USPSTF) has stirred up a maelstrom of debate by proposing that healthy postmenopausal women lay off daily calcium and vitamin D supplements, which the task force says may do more harm than good. The USPSTF concluded that, based on the available evidence, supplements containing up to 400 IU of vitamin D and 1,000 milligrams (mg) of calcium don’t reduce fractures in postmenopausal women. Plus, these supplements may slightly increase the risk of kidney stones. As a result, the USPSTF says that postmenopausal women who aren’t at risk for osteoporosis shouldn’t be taking these supplements to prevent fractures. The jury is still out on whether it’s worth it for women and men to take higher doses of calcium and vitamin D to prevent fractures, or to take vitamin D to prevent cancer. Our experts say that most of your daily calcium should come from your kitchen, not your medicine chest.
Red meat hasn’t been getting very good press lately. Meat-heavy diets have been linked to increased risks of developing heart disease, diabetes, and some cancers. New findings from two long-term studies now indicate that eating lots of meat, especially processed meat, may also shorten your life. The new research involved nearly 125,000 female nurses and male health professionals, whose diet and health have been followed by Harvard School of Public Health researchers for more than two decades. Compared to eating less than one serving a day of red meat, adding one daily serving increased the chances of dying during the study period by 13%. (A serving is three ounces, about the size of a deck of cards). Red meat meant beef, pork, lamb, and hamburger. For every extra serving of processed meat (foods like hot dogs, bacon, and cold cuts), the increase was 20%.
Aspirin, ibuprofen, and naproxen can subdue a pounding headache and ease arthritic aches. Could these and other nonsteroidal anti-inflammatory drugs (NSAID) serve double duty, protecting against skin cancer even while they relieve pain? A new study published online in the journal Cancer suggests they might. But based on the current evidence, cancer prevention alone doesn’t […]
Every Memorial Day we remember the men and women who died while serving in the United States Armed Forces. We do this with parades, church services, and placing flags on graves. Another way to honor the fallen is by paying attention to the physical and mental health of those who served and returned. A three-month […]
Yesterday’s announcement that men should not get routine PSA tests to check for hidden prostate cancer is sure to spark controversy for months to come. But the U.S. Preventive Services Task Force (USPSTF) made the right decision. On the surface, rejecting the use of a simple blood test that can detect cancer in its early and still-treatable stage sounds foolish. Cynics have been saying it is the handiwork of a group concerned more about health-care rationing and cutting costs than about health. The decision is wise, not foolish, and will improve men’s health, not harm it. The word “cancer” usually brings to mind images of a fast-growing cluster of cells that, without aggressive treatment, will invade other parts of the body, damage health, and potentially kill. That certainly describes many cancers. But not most prostate cancers. Most of the time, prostate cancer is sloth-like. It tends to grow slowly and remain confined to the prostate gland, with many men never knowing during their entire lives that a cancer was present. These slow-growing prostate cancers cause no symptoms and never threaten health or longevity. That means many men with prostate “cancer” never need treatment.
A simple blood test to check seemingly healthy men for hidden prostate cancer does more harm than good and shouldn’t be part of routine medical care. That’s the long-awaited final recommendation from the United States Preventive Services Task Force (USPSTF), published today in Annals of Internal Medicine. About half of men over age 40 get this test as part of a regular checkup. It measures the amount of a protein called prostate-specific antigen, or PSA, in the bloodstream. An above-normal PSA level can signal hidden prostate cancer. But it can also be a sign of prostate infection, an enlarged prostate, and other problems. Hunting for hidden disease in the absence of any outward signs or symptoms is called screening. The task force says that for every 1,000 men who have routine PSA tests, 0 to 1 deaths from prostate cancer will be prevented. But that is offset by 3 serious cardiovascular deaths due to treatment, along with 47 men who will live with treatment-related erectile dysfunction or incontinence.