I have been under a lot of emotional pressure for a while now. When it started I lost a lot of hair. My GP at the time didn't take my concerns seriously and over the years my hair has got thinner and thinner.

What can I do to make it either stop coming out in large amounts or encourage it to grow back?

I had blood tests for anaemia and thyroid issues a week ago and the results came back 'no action needed' but that doesn't mean there isn't something going on. I just don't know what to do.
Fat does not make you fat. It's actually pretty important.