>>>>>>>>>>>>>>>>> Below is a study of the benefits on NFL players.
The authors tested the vitamin D blood levels of 89 players from the NFL’s New York Giants during the spring of 2010.
Their average age was 25, and the group included 31 white and 58 black (African American) players.
According to lead researcher Michael Shindle, M.D., “Eighty percent of the football team we studied had vitamin D insufficiency. African American players and players who suffered muscle injuries had significantly lower levels.” (AAOSM 2011)
Sixteen of the 89 tested players had spent time on the disabled list due to muscle injuries.
The average vitamin D level among these previously muscle-injured players was 19.9 nanograms per milliliter (ng/mL) … Levels below 20 are considered by most experts to be very low.
The 73 players with no history of time lost due to a muscle injury had an average vitamin D level of 24.7 ng/mL – which most experts would call insufficient or deficient – with their levels ranging from 9 ng/mL (very deficient) to 46 ng/mL (lower end of the optimal range).
These were the overall results of the blood tests on the 89 New York Giants players:
(30.3%) players had levels considered deficient (less than 20 ng/mL).
(50.6%) players had levels considered insufficient (20 to 31.9 ng/mL).
players (19.1%) had levels considered normal (32 ng/mL or higher).
Based on the growing evidence that 20 ng/mL is too low to ensure adequate health, many vitamin D testing laboratories have raised their definition of a “normal” blood level to 30 ng/ml or more. Many anti-aging doctors consider from 65 to 100 ng/ml to be optimal.
For example, Boston University’s Michael Holick, Ph.D., M.D. – a leading researcher and author of The Vitamin D Solution – says the optimal level is 40 to 60 ng/mL and that it takes 3,000 IU per day of dietary vitamin D to achieve and maintain that range.
Co-author Scott Rodeo, M.D., urged team physicians to heed the implications of their findings: “Screening and treatment of vitamin D insufficiency in professional athletes may be a simple way to help prevent injuries.” (AAOSM 2011)
XCAP’s product Vita D is the best form of vitamin D on the market today. One drop is equal to 2000 iu.
Orthopaedic Society for Sports Medicine (AOSSM). Vitamin D Lower in NFL Football Players Who Suffered Muscle Injuries, Study Reports. June 10, 2011. Accessed at
MK et al. Vitamin D Status in a Professional American Football Team. ID 46
– 9849. AOSSM 2011 Annual Meeting, San Diego. Accessed at http://www.sportsmed.org/secure/reveal/admin/uploads/events/PODIUM%20ABSTRACTS%20Binder1.pdf