See the Telegraph article, in which we read that the "problem was diagnosed in a bone scan after she suffered a leg fracture." (Vitamin D deficiency weakens bones.) She was advised to spend more time in the sun.
It was Bill who stressed to me the importance of taking Vitamin D3, rather than D2, and that I needed to take a higher dose than I had been taking initially, and I am very grateful to him for that advice, as it has undoubtedly done me good.

