Supplements to Prevent Fractures?

Contrary to current opinion, a systematic review of 33 randomized trials in about 50,000 community-living adults over 50 years old found no benefit for supplementation of vitamin D and/or calcium. This study strongly supports the U.S. Preventive Services Taskforce in not recommending calcium or vitamin D supplementation in this population. PositiveTip: Get your vitamin D from…

Read MoreLong right arrow

Vitamin D Status

A British study found Vitamin D3 to be significantly more effective at raising total serum 25-hydroxyvitamin D than Vitamin D2 in the wintertime. During the 12 week trial, each group received biscuits or juice fortified with 600 IU (15 micro grams) of D2 or D3.

Read MoreLong right arrow

Vitamin D and Cancer in Postmenopausal Women

Researchers divided 2300 postmenopausal, healthy women aged 65 or older, into two groups. One group received 2000 IU/day of vitamin D3 and 1500 mg/day of calcium; the other a placebo. After 4 years, the difference in any new cancer incidence between groups was insignificant--including breast cancer. While more research is needed, this study indicates supplementation later in life may not make significant differences.…

Read MoreLong right arrow

Vitamin D Supplements of No Benefit to Knees

Australian researchers studied over 400 older adults who were deficient in vitamin D but otherwise healthy. All had symptomatic knee osteoarthritis. They were randomized into two groups: one received oral Vitamin D3 supplements, the other a placebo. While vitamin D levels increased over the 24 month study period, pain score and knee architecture did not differ…

Read MoreLong right arrow

Vitamin D Supplementation and Fall Risk

Swiss researchers evaluated monthly high-dose vitamin D supplementation in 200 adults 70 years and older with a history of a fall in the past year. They were randomized to receive one of three monthly regimens, including the control group. At 12 months, lower extremity function was the same in all groups, but fall rates were…

Read MoreLong right arrow

Is there Benefit to Vitamin D Supplementation?

Traditionally, low vitamin D levels have been associated with lower bone-mineral density (BMD). However, there is no universal agreement on how to define "low". Researchers studied 230 postmenopausal women 75 years or older who had 25-hydroxyvitamin D levels between 14 and 27 ng/ml. They were free of any diseases that interfere with vitamin D or calcium absorption. Participants were randomized…

Read MoreLong right arrow

Mushrooms Could Be a Viable Source of Vit D

A small trial conducted at Boston University has shown that a preparation of dried mushrooms that were exposed to ultraviolet light may contain as much vitamin D as a vitamin D supplement. When mushrooms are exposed to ultraviolet light, they produce vitamin D2, similarly to how humans produce vitamin D3 in the skin. This is…

Read MoreLong right arrow

Live Longer with Lower Vitamin D Levels

Studies of the role of vitamin D in human physiology indicate that vitamin D is involved in bone formation, the growth and development of immune cells, and stimulation or inhibition of blood vessels in cancer. Those who have lower levels of vitamin D are found to have higher death rates from heart disease, diabetes mellitus,…

Read MoreLong right arrow

Vitamin D Disappoints in Knee Pain

A small randomized, double-blind clinical trial exploring the effects of Vitamin D supplements on pain in adults with knee osteoarthritis (OA) has yielded disappointing results. After two years, the supplement group and placebo group showed no difference in knee pain, function, or loss of cartilage volume. Maybe two years was not long enough, but more…

Read MoreLong right arrow

Long Life and Vitamin D

Dutch researchers found that individuals in families who tend to live long lives have low levels of 25(OH) vitamin D. Offspring of parents who lived to their 90s had significantly lower levels than controls. This surprising finding does not prove cause, and many questions remain. Genetic studies suggest these offspring may have higher levels of…

Read MoreLong right arrow