"If it is genetics then there is very little you can do."
Study some of Bruce Lipton;s work where he has proven that genes are more of a recording media that listens to the mi d and intention rather than a hardwired information. In other words genetic code can be recoded through intention. Old world geneticists have not caught up to this new paradigm. It is being met with some resistance as most newer paradigms are in the world of scientists. Some people have overcome their genetics through the use of mental techniques such as visualization. There are several approaches being experimented with.
Science has not totally caught up to this new paradigm but in time it will. Again read up on geneticist Bruce Lipton's ground breaking work.