EAT PROTEIN AND PLANTS FOR STRONG BONES.txt
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EAT PROTEIN AND PLANTS FOR STRONG BONES

Gabe Mirkin, M.D.

 
Eating a enough protein and lots of foods from plants helps to keep 
bones strong, according to reports in the American Journal of 
Clinical Nutrition.

If they live long enough, all women and most men will develop 
osteoporosis. Studies done many years ago suggested that eating a 
lot of protein increases calcium loss in the urine and therefore it 
was thought that eating protein weakens bones by taking calcium out 
of them. However, recent studies show that eating a lot of protein 
increases calcium absorption so the extra calcium in the urine comes 
from increased absorption, not from being take out of bones. 

The second study showed that phytoestrogens found in soybeans, 
genistein and daidzein, help to keep bones strong. Therefore, most 
scientist now feel that a low-protein diet causes osteoporosis, 
while a high-protein diet may prevent it; and that eating lots of 
beans, seeds and nuts may help to keep bones strong.

1) Dietary protein, calcium metabolism, and skeletal homeostasis 
revisited. American Journal of Clinical Nutrition, 2003, Vol 78, 
Iss 3, Suppl. S, pp 584S-592S. JE Kerstetter, KO OBrien, KL Insogna. 
Kerstetter JE, Univ Connecticut, Sch Allied Hlth Profess, U-101, 
358 Mansfield Rd, Storrs,CT 06269 USA. 

2) Dietary phytoestrogens and their effect on bone: evidence from in 
vitro and in vivo, human observational, and dietary intervention 
studies. American Journal of Clinical Nutrition, 2003, Vol 78, Iss 3,
 Suppl. S, pp 593S-609S. KDR Setchell, E LydekingOlsen. Setchell KDR,
 Childrens Hosp, Med Ctr, Dept Pediat, 3333 Burnet Ave, Cincinnati,
OH 45229 USA

Checked 4/3/08