May 10th, 2011 by admin in Health Tips, Research
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Calcium is good for us, right? Milk products are great sources of calcium, and we’re told to emphasize milk products in our diets. Don’t (or can’t) eat enough dairy? Calcium supplements are very popular, especially among women seeking to minimize their risk of osteoporosis. Osteoporosis prevention and treatment guidelines recommend calcium and vitamin D as an important measure in preserving bone density and reducing the risk of fractures. For those who don’t like dairy products, even products like orange juice and Vitamin Water are fortified with calcium. The general perception seemed to be that calcium consumption was a good thing – the more, the better. Until recently.
In a pattern similar to that I described with folic acid, there’s new safety signals from trials with calcium supplements that are raising concerns. Two studies published in the past two years suggest that calcium supplements are associated with a significantly increased risk of heart attacks. Could the risks of calcium supplements outweigh any benefits they offer? Read more »
*This blog post was originally published at Science-Based Medicine*
April 6th, 2011 by PJSkerrett in Health Tips
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How much vitamin D is enough, and what’s the best way to get your daily dose of the so-called sunshine vitamin? It depends who you ask.
I just attended the latest Forum at the Harvard School of Public Health. The title, “Boosting Vitamin D: Not Enough or Too Much?” was a tip-off that we weren’t going to get a simple take-home message. (Watch a video of the event beginning Wednesday, March 30.)
Some background: Vitamin D isn’t really a vitamin. It’s a hormone. The body makes it when sunlight strikes the skin. This converts a cousin of cholesterol into a substance that ultimately becomes vitamin D. It is best known for helping the digestive system absorb calcium and phosphorus, so it is important for bone health. New research suggests—emphasis on suggests—that vitamin D may also be involved with regulating blood pressure, fighting cancer, and improving the immune system. Read more »
*This blog post was originally published at Harvard Health Blog*
January 4th, 2011 by PeterWehrwein in Better Health Network, Opinion
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1. Health care reform
How could the health care reform legislation that President Barack Obama signed into law on March 23, 2010, not be the #1 story of the year? Whether you are for or against it, the Patient Protection and Affordable Care Act is nothing if not ambitious, and if implemented, it will fundamentally alter how American health care is financed and perhaps delivered. The law is designed to patch holes in the health insurance system and extend coverage to 32 million Americans by 2019 while also reining in health care spending, which now accounts for more than 17% of the country’s gross domestic product. The biggest changes aren’t scheduled to occur until 2014, when most people will be required to have health insurance or pay a penalty (the so-called individual mandate) and when state-level health insurance exchanges should be in place. The Medicaid program is also scheduled to be expanded that year so that it covers more people, and subsidized insurance will be available through the exchanges for people in lower- and middle-income brackets. But plenty is happening before 2014. The 1,000-page law contains hundreds of provisions, and they’re being rolled out in phases. This year, for example, the law created high-risk pools for people with pre-existing conditions, required health plans to extend coverage to adult children up to age 26, and imposed a 10% tax on indoor tanning salons. Next year, about 20 different provisions are scheduled to take effect, including the elimination of copayments for many preventive services for Medicare enrollees, the imposition of limits on non-medical spending by health plans, and the creation of a voluntary insurance that will help pay for home health care and other long-term care services received outside a nursing home. Getting a handle on the complicated law is difficult. If you’re looking for a short course, the Kaiser Family Foundation has created an excellent timeline of the law’s implementation (we depended on it for this post) and a short (nine minutes) animated video that’s one of the best (and most amusing) overviews available. The big question now is whether the sweeping health care law can survive various legal and political challenges. In December, a federal judge in Virginia ruled that the individual mandate was unconstitutional. Meanwhile, congressional Republicans have vowed to thwart the legislation, and if the party were to win the White House and control of the Senate in the 2012 election, Republicans would be in a position to follow through on their threats to repeal it.
2. Smartphones, medical apps, and remote monitoring
Smartphones and tablet computers are making it easier to get health care information, advice, and reminders on an anywhere-and-anytime basis. Hundreds of health and medical apps for smartphones like the iPhone became available this year. Some are just for fun. Others provide useful information (calorie counters, first aid and CPR instructions) or perform calculations. Even the federal government is getting into the act: the app store it opened this summer has several free health-related apps, including one called My Dietary Supplements for keeping track of vitamins and supplements and another one from the Environmental Protection Agency that allows you to check the UV index and air quality wherever you are. Smartphones are also being used with at-home monitoring devices; for example, glucose meters have been developed that send blood sugar readings wirelessly to an app on a smartphone. The number of doctors using apps and mobile devices is increasing, a trend that is likely to accelerate as electronic health records become more common. Check out iMedicalapps if you want to see the apps your doctor might be using or talking about. It has become a popular Web site for commentary and critiques of medical apps for doctors and medical students. Meanwhile, the FDA is wrestling with the issue of how tightly it should regulate medical apps. Some adverse events resulting from programming errors have been reported to the agency. Medical apps are part of a larger “e-health” trend toward delivering health care reminders and advice remotely with the help of computers and phones of all types. These phone services are being used in combination with increasingly sophisticated at-home monitoring devices. Research results have been mixed. Simple, low-cost text messages have been shown to be effective in getting people wear sunscreen. But one study published this year found that regular telephone contact and at-home monitoring of heart failure patients had no effect on hospitalizations of death from any cause over a six-month period. Another study found that remote monitoring did lower hospital readmission rates among heart failure patients, although the difference between remote monitoring and regular care didn’t reach statistical significance. Read more »
*This blog post was originally published at Harvard Health Blog*
December 7th, 2010 by Peggy Polaneczky, M.D. in Better Health Network, Health Tips, News, Opinion, Research
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Not as often as you think, even though Medicare may be willing to pay for it every two years. Via Science Daily:
Now a new study led by Margaret L. Gourlay, MD, MPH of the University of North Carolina at Chapel Hill School of Medicine finds that women aged 67 years and older with normal bone mineral density scores may not need screening again for 10 years.
“If a woman’s bone density at age 67 is very good, then she doesn’t need to be re-screened in two years or three years, because we’re not likely to see much change,” Gourlay said. “Our study found it would take about 16 years for 10 percent of women in the highest bone density ranges to develop osteoporosis. That was longer than we expected, and it’s great news for this group of women,” Gourlay said.
The researchers suggest that for T scores > -1.5, repeat testing needn’t be done for 10 years. Women with T scores between -1.5 and -2.0 can be re-screened in 5 years, and those with T scores below -2.0 can have every other year testing as is done now.
To be honest, I’ve been spacing out bone density testing in woman with good baseline scores for some time, but not knowing how long I can go. This is great information for me and for my patients.
*This blog post was originally published at tbtam*
November 30th, 2010 by PeterWehrwein in Better Health Network, Health Tips, News, Research
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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).
The IOM committee’s report, released this morning, says evidence for many of the health claims for vitamin D is “inconsistent and/or conflicting or did not demonstrate causality.” The exception is the vitamin’s well-documented (and noncontroversial) benefits on bone growth and maintenance.
The IOM panel’s report also says most North Americans (Canadians as well as Americans) have more than enough vitamin D in their blood to achieve the desired effect on bone. The committee said a blood level of 20 nanograms per milliliter (ng/mL) is sufficient for most people.
The panel set 600 International Units (IU) as the recommended daily intake for children and for adults ages 19 to 70. People ages 71 and older are supposed to get an additional 200 IU, or 800 IU a day.
That’s a fairly sizable increase over the previous recommendations of 200 IU per day through age 50, 400 IU for people ages 51 to 70, and 600 IU for people ages 71 and older. Read more »
*This blog post was originally published at Harvard Health Blog*
