I have a mushroom theory about certain phenotypes... Definitely the scraggly, grey hair is one of the traitsI look for. Obesity is another traitto look for. Skin condition is another (sores, ulcers, excessive acne, celluilite and much more). You've also got a whole slew of behavior traits, usually with the commonality of complete nonsense or retarded oblivion. What I try to get through to,people is that fungus functions really well with the help,of other organisms in arrangements known as biofilms, and fungus loves fat and sugar.