Is it true that eating fruits and veggies and drinking water helps grow your hair?

I was once told my instructor when I was talking about my friends wig in class at the time. That she said, You don’t have to use so much chemicals in your hair, just eat ya fruits and veggies and drink plenty of water. An you’ll see.”

If that is true, then what fruits and what veggies (vegetables) help with hair growth? Do you know?