More vitamin D can put more pep in seniors' steps

http://news.yahoo.com/s/nm/20070626/hl_nm/vitamin_d_dc;_ylt=Am4H3ILRgG9YaDME6puF_u0_cbYF

Declining physical performance among some Dutch seniors may not be a simple consequence of aging, it may actually be due to a vitamin D deficiency, results of a new study suggest.