What are the percentages of men and woman that suffer from hair thinning or loss?

While everyone suffers from hair aging, the numbers for hair thinning or loss are as follows:

Men: 25% of men see signs of hair loss before the age of 21 with 66% seeing thinning or loss before 35. A staggering 85% of all men experience thinning or loss by age 50

Women: 12% of women see thinning between the ages of 20 – 29, the number jumps to 50% of women by the time a woman turns 50.