This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. You gain a lot of things when you get into a new relationship: love, companionship, a new toothbrush in the bathroom. You might also ...

Rapid weight gain can be unsettling, particularly when it occurs suddenly or without a clear cause. While it's perfectly normal for body weight to fluctuate slightly over time, a noticeable or ...