Hair loss: it's an unpredictable condition that can affect both men and women of all races. In fact, about 40% of men will experience noticeable hair loss by age 35, and 80% of women will experience thinning hair by the age of 60. This seems like a vast portion of the population, yet some ethnicities seem more susceptible to hair loss than others. Is there an explanation for this? And which ethnicities are more likely to experience thinning hair in the future?