The literature is litered with papers demonstrating that atherosclerotic precursor lesions ("fatty streaks") start developing in the arteries of people between the ages of 10-15. This happens in people who are lean as well as not, active as well as sedentary, and the best correlations to fatty streak formation and progression is dietary saturated fats.

It is, in fact, this processes of fatty streak progression to atherosclerosis in lean men with high saturated fat intake that best explains frailty in the elderly. This is the very specific condition of an otherwise seemingly health older person (usually lean men) having a rapid decline in health. It is now understood that this is due to underlying atherosclerosis.

You may feel all you want, the evidence is not in your favor.