The use of the term “hereditary” to describe a disease is very tricky. It can impart a sense of helplessness, hopelessness or lack of responsibility for what has happened – “now there is nothing I can do” or “its not my fault” or “it’s the fault of my ancestors” and so on.
We should stop trying to hide behind any of the above and take it upon ourselves to adjust our diet, lifestyle etc to prevent any chance of such illnesses from manifesting.
Even if I have a (genetic) predominance towards the aggravation of a certain doṣa, it can be prevented by appropriate measures. So the ball is always in our court!