New theories

1. DHT is not being used (or burned up) by physical activity / exercise - so it goes to skull swelling (gradual hair loss effect) and 

hair growth in unwanted areas of the body.

2. Energetic affairs are at work from sex that cause stress which elevates DHT and leads to # 1.

3. Attacks from people cause stress which elevates DHT

4. Malnutrition limits blood flow to scalp areas and hair thins

Picture is a reminder to be careful who you have sex with as the stress can mess up your balance.