People who start fasting every other day may lose more weight than they would if they stuck to their usual eating habits, a small study suggests.

Shares of Opiant Pharmaceuticals fell in trading after the company announced that the Phase II trial evaluating a naloxone nasal spray for the treatment of bulimia nervosa failed to meet primary endpoints and will discontinue the program.

Quest Diagnostics Inc. will use a more precise method of calculating levels of “bad” LDL cholesterol that no longer requires fasting prior to blood draw, a development likely to delight patients who previously had to refrain from eating for up to 12 hours before testing.