My answer to Do genes play a significant role in longevity? If so, how large is this role?

Answer by Connie b. Dellobuono:

10–20% gene-related effects as the environment and lifestyle (stress,toxins,diet,exercise) affect our cells more at around 80%.

Sugar and metabolism have a major influence in our health and longevity.

Do genes play a significant role in longevity? If so, how large is this role?