This Is Why You Started Gaining Weight Out of Nowhere

There's no discovery quite as startling as stepping on the scale and weighing way more than you thought you did (or trying on your favorite pair of pants only to realize that they fit a little tighter than they did the week before) with absolutely no idea why.

Most of the time we can pinpoint our weight gain from, say, an overly indulgent vacation in which we downed a dessert with every meal or a newfound affinity to eat out on the regular. But, then there are those times when we experience unexplained weight gain—the kind of weight gain that seems to show up overnight, out of nowhere, and seemingly for no reason.

When you can't find a culprit for why you are gaining weight, it might be one of these seven sneaky reasons.

Keep reading to see what they are and what you can do about it.