Caffeine products can stop men from going bald, according to a German study.

Prof. Peter Elsner, part of the team at the Jena University, said that the stimulant has the most effect on men whose hair roots were very sensitive to testosterone, one of the causes of hair loss.

For the maximum effect, though, consumers will have to love their coffee. Noticeable effects would require 60 to 80 cups of coffee a day, one expert said. Of course, there is another option, according to researchers: smear caffeine products directly onto the scalp.