Milk may not be as good as you thought – study

Drinking a lot of milk may not lower the risk of fracturing bones, a study in the British Medical Journal suggests. The research conducted in Sweden, showed women who drank more than three glasses of milk a day, were more likely to break bones than those who had less.

The researchers cautioned that their work only suggested a trend and should not be interpreted as proof that high milk consumption caused fractures. Factors such as alcohol and weight were likely to play a role, they said.

Twice the chance
Milk has been recommended as a good source of calcium for many years, but studies considering whether it leads to stronger bones and fewer fractures have had conflicting results.
A team of scientists in Sweden examined the dietary habits of 61,400 women between 1987 and 1990, and 45,300 men in 1997 and then monitored their health afterwards.

Participants were asked to complete questionnaires on how frequently they consumed common foods such as milk, yoghurt and cheese over a one-year period.

Researchers then tracked how many of these people developed fractures and how many died in the years that followed.
In the 20-year follow-up period in which the women were monitored, those who drank more than three glasses of milk a day were more likely to develop fractures than those who had consumed less.

The high intake group had a higher risk of death too.
Prof Karl Michaelsson, lead researcher at Uppsala University, said: “Women who drank three or more glasses of milk a day had twice the chance of dying at the end of the study than those who drank less than a glass a day.

“And those who had a high milk intake also had a 50 per cent higher risk of hip fracture.” Men were monitored for an average of 11 years after the initial survey and the results showed a similar but less pronounced trend.

Opposite pattern
When fermented milk products such as yoghurt were considered, the opposite pattern was observed. People who consumed more had a lower risk of fractures.

Prof Michaelsson says the findings could be due to sugars in milk, which have been shown to accelerate ageing in some early animal studies.

“Individuals should still be encouraged to consume a balanced diet,” said Prof. Sue Lanham-New, from the University of Surrey.

SOURCE: Daily Monitor

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