One night last August, Nikki Ralph awoke to the cries of her five-week-old daughter Livvi. As she lent over to lift the baby from her cot, she heard an almighty crack.
"It was so loud it actually woke my husband ? and he'd been so sound asleep he'd slept through Livvi's cries. "Simon asked if I was OK, but I was in such agony I couldn't speak," she recalls.
But all that changed on a family holiday to the Dominican Republic when Robert's back collapsed after taking part in a dance competition.
"One minute I was holding my wife Jean, the next I was in absolute agony."
A 56-year-old reader from Cambridge broke her wrist falling down the stairs and was told that she has osteoporosis. The reader has heard that vitamin K may be of some use in combating osteoporosis and wonders if this was good advice.
Milk has had a shaky time: as well as cancer, it has been linked to heart disease, allergies and even osteoporosis. A whole generation of young people - known in the industry as "dairy dodgers" - drinks very little, and their children may follow suit.