The statistics show that more fractures occur early in the year and it was traditionally thought that this was because its the part of the year when we generally see more snow - ice.
Research has shown that its true that we are more at risk from weather related falls in winter however these accidents result in a greater risk of injury. Our bone density is at a low point during February and March due to the accumulative lack of sunlight and over the winter months resulting in low levels of vitamin D.
Women over 45 and those with low body fat or sedentary lifestyle are more at risk from having low bone density or Osteoporosis and so should consider Vitamin D supplements during winter.
We need the presence of vitamin D in the wall of the intestines to absorb calcium - low calcium levels lead to low bone destiny and osteoporosis.
The statistics are not good, there are around 60,000 Osteoprortic hip fractures in the UK each year, 15-20% of those will die with in a year from causes related to the fracture.
Other causes of Low bone density: excessive intake of Alcohol, caffeine, carbonated drinks & acidic diet.
Osteoporosis results in bones being more brittle, however it is different from Brittle bone condition. See * Brittle bone society
Muscular strength training - (less falls)
Mobility & flexibility (posture)
CV training to maintain current fitness levels