Research with identical twins has confirmed that some baldness is influenced by choices you make about how you live including:
 
  • How much alcohol you drink
  • Whether you smoke
  • How much coffee you drink
  • How stressful you experience
  • Whether you wear a hat
  • Whether you have children
  • How much you exercise
 
A study conducted at an Ohio Medical School investigated 92 identical twins and tested them for degree of baldness and testosterone levels using a saliva test.

Hair loss was analysed and measured from the forehead, temples and crown, and the results compared with lifestyle factors like how much they drank and how much stress they experienced.

In general men with genetically linked male pattern baldness were less affected by nutritional and lifestyle factors than men with the type of baldness called Areata alopecia.

Baldness Research - Five Key Results 

The results were surprising. Significant links that showed up included:
  1. Increased hair loss from the forehead in men who:
  • Smoked
  • Had dandruff
 
  1. Increased hair loss from temples in men who:
  • Drank more than four alcoholic drinks per week
  • Using more hair products
  • Took longer workouts
 
  1. Decreased hair loss from temples in men who:
  • Had higher testosterone levels,
  • Wore hats
  • Weighed more
 
  1. Increased loss of hair from the crown in men who:
  • Drank more than four alcoholic drinks per week
  • Smoked
  • Exercised more
  • Experienced more stress
 
  1. Hair thinning in general was linked to:
  • Having more children
  • Increased stress
  • Being thin
  • Drinking more coffee
  • Having a history of skin disorders
Previous research, also with identical twins to eliminate genetic factors, found smoking, dandruff, hypertension and a lack of regular exercise were all associated with hair loss.

Being divorced or widowed also increased the chance of hair loss, especially among women in this study. And men with elevated testosterone levels had increased hair loss compared with other men.