Not entirely surprising for those who work in banking.
One of the hallmarks one can see is premature aging - guys going grey in their 30s, developing wrinkles decades earlier, and weight gain.
Years of severe sleep deprivation, the lack of control over your working hours (really having no idea when you'll leave the office that day, etc which causes mental strain), and poor diet (eating sugary breakfasts, really late night dinners that are often heavy, etc.) just accumulates and wears your body down. It's a toxic mix that often leads to mood disorders (exploding on others, anger mgmt issues) and mental health problems, which makes substance abuse as a way to medicate these problems an easy solution. Basically the environment creates a perfect storm for your health going to sh*t, which may be easier to recover from in your early 20s, but not so in your late 20s or early 30s.
And this is just health stuff - not even mentioning personal life/relationships.
But I guess it's worth the money right?
All business oriented jobs (the kinds MBAs tend to take anyhow) have a significant degree of stress, but some industries/jobs have much more than others.
I've always felt that banking is really only worth it if you can do it pre-MBA. The lifestyle as an analyst is pretty bad, but again your body can handle it at that age morseo than even a few years later.