Inflammation is caused by DHT from my understanding, and this is what causes hair loss in men. Other conditions in women also may cause inflammation from whatever hormone issue, stress or otherwise - but it is inflammation that causes a lot of damage to the hair follicles.
Also - DNA and genetics are constantly changing their expression based on your patterns in life. Exercising is known to change your gene expression by 70% or more in 6 months. So the understanding most people have about genes is not accurate - because genes are there for our protection, not our limitation - sure, there are more prone genes which are easier to get hair loss in, and some may not - but this does not mean there is a brick wall, like we previously used to think.
I would share a link but i am not sure if I am allowed to - but searching online on studies we already know gene expression is constantly changing by a direct result of our habits and life style (eating, exercise and others).
hope this helps.