The AARP Habits That Could Add a Decade to Your Life

The Answer That Surprised the Researchers

Ask most people what separates healthy 80-year-olds from unhealthy ones, and you will hear the usual answers: diet, weight, exercise, sleep. Those things matter. But when researchers from the Harvard Study of Adult Development actually asked 80-year-olds that question directly, the answer was something different. It was the quality of their relationships.

That finding is at the center of what AARP Chief Public Policy Officer Debra Whitman calls the most important insight from her book, The Second Fifty, which draws on decades of research into healthy aging. According to Yahoo Finance’s reporting on her appearance on the Decoding Retirement podcast, Whitman cites Robert Waldinger, director of the Harvard Study, who found that social connection — not physical metrics — was the single strongest predictor of health among people in their eighties.

The Five Habits Worth Building

AARP research and Whitman’s work, as reported by Yahoo Finance’s Decoding Retirement podcast, point to a set of behaviors that, practiced consistently, could add up to a decade of healthy, active life after 50. The following habits reflect themes drawn from that body of research. They are not complicated. They are not expensive. They are, in many cases, things you already know matter — but the data behind them is stronger than most people realize.

Stay Socially Connected

This is the one that keeps rising to the top of the research. Strong relationships — with friends, family, neighbors, or community — are more predictive of long-term health than cholesterol numbers or BMI. Whitman told Yahoo Finance that when she absorbed this finding as a self-described hardworking mom, her takeaway was practical: reach out to friends more, build community deliberately, and treat social connection as a health behavior rather than a luxury.

Stay Physically Active

Movement matters — not at any particular intensity, but consistently. Research cited in AARP’s health reporting links regular physical activity to reduced risk of cardiovascular disease, cognitive decline, and a range of chronic conditions. Walking, swimming, gardening, dancing — the activity is less important than the habit of doing something.

Eat Well Without Obsessing

AARP’s dietary guidance for adults over 50 emphasizes patterns over perfection: more vegetables, more lean protein, less processed food, and enough calories to sustain energy and muscle mass. Restrictive diets are not the goal. Sustainable, enjoyable eating is.

Keep Your Mind Engaged

Cognitive engagement — reading, learning new skills, staying curious — is associated with slower cognitive decline in long-term studies. AARP’s Staying Sharp program, among others, is built on this body of research. It does not require formal education; it requires keeping the brain actively interested in something.

Sleep Consistently

Sleep research has become one of the most robust areas of aging science in the past decade. Chronic poor sleep is linked to increased risk of dementia, cardiovascular disease, depression, and metabolic disorders. AARP health reporting consistently flags consistent, quality sleep as one of the most undervalued health behaviors for adults over 50.

The Housing Question Nobody Wants to Think About

Whitman raised a second issue in her Decoding Retirement conversation that is worth sitting with: the gap between where most people want to age and where they actually can. According to AARP research, between 80 and 90 percent of older adults want to stay in their own homes as they age. The problem, Whitman notes, is that most American housing was not designed with aging in mind.

She describes her own reckoning with this after a 94-year-old visitor struggled with the six front steps of her home. Those same steps, she realized, would eventually pose the same challenge for her and her husband. Planning for home accessibility — whether through modification or thoughtful relocation — is something AARP recommends doing well before it becomes urgent.

The Takeaway That Travels

Of all the habits in this list, the one most worth returning to is the first. Strong relationships are not a side benefit of a good retirement. According to the Harvard research Whitman cites, they are the foundation of one. Call the friend you have been meaning to call. Join the group. Show up for the neighbor. The data is unambiguous: connection is medicine, and it does not require a prescription.

You are not done yet. You are, if the research is right, just getting started on the years that matter most.

References: AARP Expert Reveals Retirement Planning Secrets That Could Add Years to Your Life | AARP Retirement Budget Tips