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BMJ 2007; 335 doi: (Published 20 September 2007) Cite this as: BMJ 2007;335:620

Girls who think they're milk intolerant consume 212 mg of calcium a day less than those who don't. A survey of 13 year olds found that on hydrogen breath tests almost half of those who thought they were intolerant were not (Pediatrics 2007;120:e669-77 doi: 10.1542/peds.2006-1240). Self imposed restriction of dairy foods because of perceived milk intolerance as early as age 10, the authors say, is associated with lower spinal bone mineral content and a later risk of osteoporosis.

For centuries, bars, taverns, and inns have provided convivial settings in which to enjoy drinking with friends, and most of the time they are fun, problem-free places. But identifiable characteristics of bars themselves may lie behind those drinkers who behave badly. Along with the bar's location, the internal layout may be a risk factor if it leads to unnecessary overcrowding. Environmental factors should be taken into …

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