Men with poor craniofacial development are more likely to end up higher Norwood(5,6,7) than those who have moderate or good craniofacial development (1,2,3,4). Identical twins looks the same hence they have the same craniofacial development and end up having the same pattern and degree of hair loss. The craniofacial development of balding people is typically characterized by missing cheekbones, rounded jawline, thin and small nose or crooked nose, large curved nose, flat nose, narrow palate, asymetrical ears and eyes etc... Look for example at Vladimir Putin and his very poor craniofacial development. His rounded and flat jawline and super thin nose. I don't think that it is a coincidence that he lost hair. To show that this is not a coincidence I will show you more guys. - Missing cheekbones and jawline, thin lips. Goblin-like ears, thin nose, missing cheekbones. asymetrical ears, asymetrical nostrils aswell, Missing cheekbones, rounded jawline, thin nose with nostrils too close to each other. missing cheekbones, and flat face. flat jawline, missing cheekbones. flat nose, missing cheekbones. missing cheekbones and look at his strange nose. thin nose missing cheekbones. small rounded jawline, another asymetrical nostrils case. Flat nose, missing cheekbones. you can't see well on this photo but he has very asymetrical ears, small thin lips and a wide galea. He looks like shreck... I think this is enough but If you don't believe there will be a second part. This list Includes all the balding guys I recalled within the last one hour. I don't think that it is coincidence that all those guys are losing hair. Sometimes people with poor craniofacial development might still have their hair That's why I am saying that it's a predisposition and not a direct cause but have you ever seen a person with high Norwood and good craniofacial development like these? I still don't know the real cause of hair loss but I know that poor craniofacial development is extremely common in modern era. Higher Norwood is associated with increased risk of heart disease, prostate cancer, high blood pressure, and increased risk of heart attack, so I still have a lot to investigate. The worse the craniofacial development, the higher the risk if hair loss.