High blood pressure often runs in families. Genetic risk is complex, probably resulting from a combination of harmful mutations in risk genes and silencing of protective genes. There is nothing we can do to change our genetics, just as we can’t stop aging. With aging comes a universal increase in systolic blood pressure (the top number) and in the risk for heart disease.

from Times of India https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/why-is-my-bp-high-even-when-i-am-fit-experts-answer-why-fit-and-healthy-people-suffer-from-high-blood-pressure/articleshow/93728950.cms