A healthy boy presents with intermittent abdominal distention, cramps, and excessive flatulence. He has normal growth, hasn?t lost weight, and has not traveleled. He recently began drinking a glass of milk nightly. How do you diagnose this patient? USMLEasy from McGraw-Hill
Variations in a gene involved in folate metabolism may explain some of the disparities in the incidence of colorectal cancer that have been seen among various racial/ethnic groups, new research suggests. Medscape Medical News
A relatively limited increase in systolic blood pressure with exercise stress testing (EST) is associated with a higher risk of cardiovascular mortality, according to the results of a study published in the December issue of the American Journal of Cardiology. Reuters Health Information
Introducing antibullying and antidiscrimination policies and gay-straight alliances in US schools may be key in reducing the strikingly high attempted suicide rate among gay youth. Medscape Medical News
The American Academy of Neurology is teaming up with the Centers for Disease Control and Prevention to ask neurologists to remain vigilant in tracking any new cases of the autoimmune disease. Medscape Medical News
