Obesity poses osteoporosis risk

Obesity may be a risk factor for the frail bone disease osteoporosis, a study suggests.
US researchers have discovered that some people who are overweight have hidden fat inside their bones that could make them weak and prone to fractures.
The Harvard Medical School team in Boston did body scans on 106 obese but healthy men and women.
The findings are published in the journal Radiology.
The scans reveal some people carry fat in hidden places like the liver, muscles and bone marrow as well as their belly, hips or thighs.
Dr Miriam Bredella, who carried out the work, says apple-shaped people who carry weight around their waist may be at greatest risk.