Here are a couple of them:
"You should lose weight."
"You have to stop drinking, it makes you gain more weight."
"You should stop eating all that junk so your face won’t have too much pimples."
"Your teeth are really crooked, why dont you get braces?"
"There’s this gym I heard of, you should go get a membership."
And my personal favorite…
"Stop going under the sun for too long, it will make you dark and ugly."
Hahahahahaha. These people…