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.
Calcium supplements are being called on the carpet after new research showed they significantly increased risk of heart attack among women getting extra calcium from pills, but not among those who got their calcium from food. What’s the connection? Over time, calcium can accumulate in arteries. It also builds up in plaque, the cholesterol-filled pockets that can cause angina or a heart attack. Three Harvard professors say the new study doesn’t prove that calcium supplements cause heart disease, but advocate that it’s almost always best to get vitamins and minerals from food, not pills.
Since bisphosphonates such as alendronate (Fosamax), ibandronate (Boniva), risedronate (Actonel), and zoledronic acid (Reclast) were first introduced in the mid-1990s, they’ve become a staple of osteoporosis treatment. Yet an FDA review recently published in The New England Journal of Medicine questions whether there’s any benefit to staying on these drugs long-term—especially considering their potential for side effects. A report released today in the Archives of Internal Medicine highlights one of those side effects, linking bisphosphonate use to a higher risk of unusual fractures in the femur (thighbone). If you’ve been taking bisphosphonates long-term, you may be wondering, “What now?” If you’ve been taking bisphosphonates for less than five years you probably don’t need to change what you’re doing. But if you’ve been on these drugs for more than five years, talk to your doctor about whether it’s worth continuing.
Good vibrations may work for dancing on the beach or for romance, but they don’t seem to do much to strengthen bones. Results of a clinical trial published in the Annals of Internal Medicine showed that older women who stood on a vibrating platform for 20 minutes a day experienced just as much bone loss over the course of the year-long trial as women who didn’t use the platform.
Heart disease, stroke, diabetes, asthma, osteoporosis and other common chronic diseases are often blamed on genes, pollution, or the wear and tear caused by personal choices like a poor diet, smoking, or too little exercise. An intriguing hypothesis is that these and other conditions stem from a developing baby’s environment, mainly the womb and the placenta. During the first thousand days of development, from conception to age 2, the body’s tissues, organs, and systems are exquisitely sensitive to conditions in their environment during various windows of time. A lack of nutrients or an overabundance of them during these windows, so the thinking goes, programs a child’s development and sets the stage for health or disease.
A panel discussion at Harvard School of Public Health called “Boosting Vitamin D: Not Enough or Too Much?” highlights the current controversy over the once-overlooked sunshine vitamin. A panel of experts assembled by the Institute of Medicine recommends a daily dose of 600 IU per day for everyone from ages 1 to 70 and 800 IU for those over 70. Other experts think the IOM recommendation is too low. One way to get vitamin D is to spend a few minutes a day outside in the sun, but that’s a hot-button issue because sun exposure is a cause of skin cancer.
Vitamin D has been talked about as the vitamin — the one that might help fend off everything from cancer to heart disease to autoimmune disorders, if only we were to get enough of it. “Whoa!” is the message from a committee of experts assembled by the Institute of Medicine (IOM) to update recommendations for vitamin D (and for calcium). […]
Don’t throw out those calcium supplements just yet. Oh, the ruckus a single study can raise. A report about calcium and cardiovascular disease had people from San Diego to Caribou, Maine worriedly calling their doctors or throwing away the calcium supplements they were taking to keep their bones strong. Here’s what prompted the concern: New […]