does anyone knows how many grams of protein should an average person eat a day?

modert

Sounds like you are motivated and doing the right things!

Have you been officially diagnosed with TE? Are you iron deficient? When you lost your 40 lbs were you crash dieting (did the weight come off too fast or did you eliminate too many carbs)?

Sometimes hair loss can be brought on by more serious underlying problems, specifically endocrine, like thyroid and adrenal disorders. These conditions can also effect your weight. If the problem with your hair came on suddenly, I suggest that you see an endocrinologist and rule out other problems.