I'm obviously not going to disclose someone else's health history, but a friend that was admitted to medical school last fall took a year off to adjust after her depression flared up and it turns out that she was diagnosed with bipolar disorder. She's doing much better now and things are falling into place. She's looking forward to starting school in the fall.
That said, she's extremely happy she took a year to dial things in and take the time to get a handle on things after her diagnosis instead of jumping into medical school anyway. Her school was very supportive of her decision.