Does caffeine causes hair loss?

i used to have a lot of hair thick hair and know i have little hair my hair has been falling out a lot and i think its because of something i might be over consuming but im not quite sure what it could be, either medications when i get headaches which is like once or twice a week i take exedrin which contains caffeine, i take calcium and natural herbal energy suplements, i drink coffee too sometimes and i think that could be it other than that my diet is pretty good i dont eat mcdonalds or greesy food, i use an organic shampoo, so what can it be?Does caffeine causes hair loss?
I don't think caffeine causes hair loss directly, but if i recall correctly it can make hair dry out which makes it more susceptible to damage/breaking.