Scientists pinpoint mutation that appears to cause severe forms of bone loss
U.S government experts found no evidence that calcium, vitamin D supplements help prevent fractures
Study also found combined risk from dietary calcium, pills
Potency of many brands is inconsistent with labels, study finds
Factors your doctor should consider
Level of 'visceral fat' seemed to have an effect regardless of man's overall weight
Health experts disagree on safe levels needed to prevent illness
Women with conditions including arthritis and cancer should be aware of vitamin D drop during winter
Updated recommendations don't address relief of menopausal symptoms
Improvement begins after eight weeks of recovery, study shows
