Soy Isoflavones Fend off Osteoporosis
A number of studies have found that soy foods and soy isoflavones in particular are good for bone health and osteoporosis in particular.
Large review on soy
Soy helps bones in other research
This is confirmed by a 2012 analysis of multiple studies from Sichuan University’s Hainan Medical College.
The researchers analyzed multiple published international clinical studies on the application of soy isoflavones to prevent osteoporosis, the central cause of hip fractures and other bone fractures around the world.
In their meta-analysis of the research, the medical researchers found that soy isoflavones increased bone density by 54% while reducing bone loss by 23% as measured by a bone loss marker called deoxypyridinoline, which is found in the urine, especially at higher levels among those women in postmenopause.
The research found that doses above 75 milligrams a day of soy isoflavones had the most effect among postmenopausal women.
Osteoporosis is the leading cause of disability among the elderly. Nearly half of women over 60 will have a hip fracture among industrialized nations.
Active phytoestrogens within soy isoflavones include genistein and daidzein. They are also found among many types of peas, beans, nuts and whole grains.
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Wei P, Liu M, Chen Y, Chen DC. Systematic review of soy isoflavone supplements on osteoporosis in women. Asian Pac J Trop Med. 2012 Mar;5(3):243-8.