Interesting - Vitamin D

I take D3 supplements - a small amount in summer and a larger amount in winter. From United Press International:

Vitamin D deficiency linked to muscle weakness in older adults
Vitamin D deficiency is linked with poor muscle health in older adults, a new study finds.

Maintaining muscle health helps seniors maintain their independence, mobility and quality of life. It also lowers their risk of falls and frailty.

Researchers looked at more than 4,100 people, aged 60 and older, in England. About 4 in 10 with vitamin D deficiency had muscle weakness -- twice the level found among those who had adequate vitamin D levels.

Impaired muscle performance was three times more common among those with vitamin D deficiency (25.2 percent) than those with adequate vitamin D (7.9 percent).

Interesting - one of those chemicals that is used (for good) in several places in our body.