Moderate—but not excessive—exercise can curb appetite; When you’re older does your ability to absorb supplements decline? FDA warns against eye drop to change eye color; Are soy supplements safe for breast cancer patients? Most ditch GLP-1 drugs after one year; Some B-complex supplements don’t deliver full suite of B vitamins; Novel non-addictive pain drug approved; Why mosquitoes can bite in mid-winter; Oops—surgeon removes patient’s liver, mistaking it for spleen.