Fight Aging! Newsletter, October 24th 2022
This study shows the uncoupling of lifespan and healthspan parameters (aerobic fitness and spontaneous activity) and provides new insights into SIRT3 function in CR adaptation, fuel utilization, and aging.
HDL Level, Age, and Smoking are the Largest Determinants of Mortality Risk in Old People
https://www.fightaging.org/archives/2022/10/hdl-level-age-and-smoking-are-the-largest-determinants-of-mortality-risk-in-old-people/
An interesting epidemiological study here stratifies the contributions of various metrics to mortality in later life, age 70 and older. The authors find that the largest effects arise from HDL level, chronological age, and smoking. The largest single cause of death in our species is atherosclerosis, a progressive malfunction in clearance of cholesterol from blood vessel walls that leads to fatty plaques, narrowed arteries, stroke, and heart attack. HDL particles carry excess cholesterol from blood vessel walls back to the liver for excretion, and - thus over a lifetime - the more HDL in circulation one has, the greater the metabolic dysfunction needed to begin in earnest the development of atherosclerotic plaque.
The Duke Established Populations for Epidemiologic Studies of the Elderly (D-EPESE) is a longitudinal cohort of community-dwelling older adults designed to overcome the above-mentioned limitations. D-EPESE included 1507 participants, aged ≥71 years with biomarker data and 27 years of death data from the time of blood ...
Source: Fight Aging! - Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
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