A single, 45-minute “motivational interview” with two 20-minute follow-up phone calls may help people with HIV who report unhealthy drinking reduce their alcohol intake. This approach may be especially effective for those drinkers who are unmotivated or ambivalent about changing, say researchers at UC San Francisco and Kaiser Permanente.

A two-week course of an experimental immunotherapy called teplizumab dramatically reduced type 1 diabetes (T1D) diagnosis rates in people at high risk for the disease, according to newly published phase II clinical trial results. This is the first time a drug has been able to delay or prevent the disease, which affects 2 million people in the United States.

A study has lodged a new kink in the breastfeeding dilemma that adds to the angst of exhausted new parents: While most newborns lose weight in the first days of life, do you or don’t you offer a little formula after breastfeeding if the weight loss is more than usual?