How come Europeans lose their hair and Asians Africans and Native Americans keep their hair?

I know it's true Europeans have thin hair and the thinner hair the changes of hair loss are higher but i have heard that Asians Africans and Native Americans have thicker hair is this true does thicker hair does that mean the thicker the hair the chances of hair loss are lower like zero but Asians and Native Americans can have premature grey but they never lose their hair but Africans never get premature grey hair and they never go bald if they do it's rare how come.