Well, yeah that's what it's said on the form: that it's there to contribute towards employee's physical and mental adjustment to their jobs, improves and maintains their physical and mental well being.
They also add that it's in my best interests that this declaration form should be completely accurate.

I'm just very distrustful of any company that claims to care about their employee's physicial and mental health. I don't feel like I owe them that much info about my life.