This is probably one of the biggest contributors to people with thinning hair (even some baldness cases). This is a very common topic on fitness forums and similar magazines. People have no idea how much their being out of shape/eating crappy processed or junk food contributes to their hair loss.
Very common topic, nearly every day men and women will bring up how their hair came back fuller, shinier, stopped falling out abnormally from eating right and working out which takes away stress and helps keep hormones and body chemicals in check
Thanks for the info!