342 ‒ Aging well: Peter shares strategies for improving longevity with residents at senior living

KEYPOINTS

• 01

  Longevity means both lifespan and healthspan, and healthspan has three parts.

  Speaking with residents of a senior living community, in a conversation hosted by his daughter Olivia, Peter defines longevity as maximizing how long and how well you live. Healthspan covers the physical (free of pain, able to garden, golf, hike or simply care for yourself), the cognitive (a sharp mind) and the emotional (purpose, happiness, connection). Asked to choose between living to 80 in good health with a quick end, or to 100 with 20 years of painful decline, he expects almost everyone would pick the first.

• 02

  It's never too late to start, and the biggest gains go to the least active.

  Peter compares it to saving for retirement: earlier is better, but starting late still pays. Trials in older adults show people who first lift weights in their 60s and 70s benefit remarkably. Adding 3 hours a week of exercise barely changes things for someone who already trains, but taking a sedentary person to 3 hours (30 minutes, 6 days a week) has an 'enormous' impact.

• 03

  The four horsemen are heart disease, cancer, neurodegeneration and metabolic disease.

  Cardiovascular and cerebrovascular disease is the leading cause of death for men and women, in the US and globally. Cancer is close behind and is many different diseases ('prostate and breast cancer are as different as a pickup truck and a Corolla'). Third is dementia, including Alzheimer's and vascular dementia. Fourth is the spectrum from insulin resistance and fatty liver to type 2 diabetes, which rarely kills directly but raises the risk of the other three by about 50%.

• 04

  Surviving a heart attack is a second chance to act on the controllable risks.

  About half of heart attacks are immediately fatal. Survivors should target what drove the first event: cholesterol, blood pressure and smoking (the big three), plus exercise and metabolic health. Peter knows people who had a heart attack at 60, lost 30 lb, quit smoking, managed their numbers, started exercising and lived into their 90s.

• 05

  After 65, falls drive a five- to sixfold rise in accidental death.

  At Olivia's age, accidental deaths are mostly car crashes and overdoses. At Peter's, overdoses. Over 65, almost all are falls. Three things drive it: loss of type 2 (fast-twitch) muscle fibers, which shrink from about age 25 and supply the reactive step that catches a stumble; lower muscle mass; and lower bone density. Women are more affected, partly because many didn't receive hormone therapy after menopause and estrogen is the most important hormone for bone. About half of hip-fracture survivors never regain their previous mobility.

• 06

  Heavy strength training can rebuild bone, even in frail older women.

  Peter's favorite example is Belinda Beck's LIFTMOR trial in Australia. Women over 65 with very low bone density, who had only walked or done yoga, were randomized to supervised heavy training: squats, deadlifts, presses and pull-up progressions. Some ended up deadlifting their own body weight, and scans showed bone density increased, which was once thought impossible. Fast-twitch fibers also respond only to heavy loads plus reactive movement like bouncing, side-to-side steps and jumping rope. 'Lifting weights is something every person on this planet should be doing.'

• 07

  Older adults need about 1 g of protein per pound to fight anabolic resistance.

  Peter's diet principles: don't eat too much or too little, and find a pattern you can stick to, whether vegetarian, Mediterranean or steak and potatoes. Aging muscles respond less to a given amount of protein (anabolic resistance), so needs rise just as many older people, especially women, eat like 'little birds'. If you weigh 150 lb, aim for about 150 g. Half that is clearly too little. Overweight people can base it on a reasonable goal weight. Track a week in an app to check.

• 08

  Sleep in later life: protect the wake time, cut naps, and time fluids, food and alcohol.

  With age, sleep gets lighter and nighttime urination more common. Thirst also becomes a less reliable signal, so hydrate during the day but taper fluids before bed. Leave about 3 hours between dinner and bed, minimize alcohol, and keep the room dark and cold. The biggest lever is a fixed wake-up time with no daytime naps, which builds sleep pressure. If you still struggle to fall asleep, try the lowest-dose melatonin (about 300 mcg, no more than 1 mg), which helps start sleep but doesn't keep you asleep. Ashwagandha helps some people.