By Amanda MacMillan

Depression is a serious illness that can happen to anyone, even people who seem to have it all.

Here are 20 famous people, whether actors, singers or athletes, who have struggled with depression, including postpartum depression and bipolar disorder.

Jon Hamm
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When "Mad Men" actor Hamm was just 20, he experienced chronic depression following his father's death. The structured environment of work and school (he was a college student at the time) helped him recover, but he also relied on therapy and antidepressants to pull him out of a downward spiral.

"You can change your brain chemistry enough to think: 'I want to get up in the morning; I don't want to sleep until four in the afternoon," Hamm told UK magazine The Observer in September, 2010, speaking about medication.

More from Health.com:
10 Careers With High Rates of Depression
Boost Your Mood Naturally
12 Signs of Depression in Men

For more on mental health, click here.