Gratitude and Longevity: How Thankfulness Supports a Longer, Healthier Life
Gratitude is linked to a lower risk of death, especially from heart disease, along with better sleep, mood, and health habits. The effect is modest and the evidence is still mostly observational. But gratitude is free, safe, and works alongside the fundamentals of preventive health, which makes it a worthwhile addition to any longevity plan.
At LifespanMD, most of our work focuses on measurable risk: ApoB, blood pressure, fitness, body composition, and sleep. Yet a growing body of research shows that how we think, and how we connect with others, also shows up in long-term health outcomes. Gratitude is one of the best-studied examples.
With Thanksgiving this weekend, here is what the science actually says, where it falls short, and how to practise gratitude in a way that is most likely to help.
What the Research Shows About Gratitude and Health
Does gratitude help you live longer?
The strongest data come from the Nurses' Health Study. Researchers followed 49,275 older women (average age 79) for about four years. Those in the highest third of gratitude scores had a 9% lower risk of death from any cause than those in the lowest third (Chen, 2024).
The link was strongest for heart disease, with a 15% lower risk of cardiovascular death. The results held after adjusting for physical health, lifestyle, social participation, religious involvement, and mental health. No clear association was found for cancer, respiratory, or neurodegenerative deaths.
Gratitude and heart health
In 186 patients with early, symptom-free heart failure, higher gratitude was associated with better mood, better sleep, less fatigue, and lower levels of inflammatory markers (Mills, 2015).
A follow-up pilot trial asked some of these patients to keep a gratitude journal for eight weeks. Compared with usual care, journaling lowered an index of inflammatory biomarkers and increased heart rate variability, a marker of healthy nervous system balance (Redwine, 2016).
Gratitude, sleep, and healthy habits
In a classic set of experiments, people who listed five things they were grateful for each week, for ten weeks, felt more optimistic and logged about 1.5 more hours of exercise per week than those who listed daily hassles. Adults with chronic neuromuscular disease who journaled daily for three weeks slept longer, woke more refreshed, and felt more connected to others (Emmons, 2003).
The bigger picture: optimism and connection
Gratitude overlaps with two other well-studied longevity factors:
Optimism. Women and men with the highest optimism lived 11 to 15% longer on average, and had 1.5 to 1.7 times greater odds of reaching age 85 (Lee, 2019).
Social connection. Across 148 studies and more than 300,000 people, stronger social relationships were tied to a 50% greater likelihood of survival, an effect comparable to well-established risk factors (Holt-Lunstad, 2010).
Gratitude naturally strengthens relationships. Thanking someone, noticing their support, and expressing appreciation are all ways of investing in the social ties that research consistently links to longer life.
How Gratitude May Support Healthspan
Researchers are still working out why gratitude tracks with better health. The leading explanations:
Stress regulation. Gratitude may shift the nervous system toward a calmer, parasympathetic state, reflected in higher heart rate variability.
Lower inflammation. Chronic inflammation drives cardiovascular disease, and early data suggest gratitude practice may reduce inflammatory markers.
Better sleep. Focusing on positive thoughts before bed may quiet the worry that keeps people awake.
Healthier behaviour. Grateful people may feel more motivated to exercise, eat well, and look after their health.
Stronger relationships. Expressing thanks builds social connection, one of the most consistent predictors of longevity.
A Practical Gratitude Protocol
Like exercise, gratitude works best when it is specific, consistent, and easy to sustain. A simple evidence-informed approach:
Write it down. List three to five specific things you are grateful for, one to three times a week. The research used written lists, not just passing thoughts.
Be specific. "My friend drove me to my appointment on Tuesday" beats "my friends." Detail makes the feeling more vivid.
Try it before bed. Evening reflection may help with sleep, one of the outcomes most consistently improved in gratitude studies.
Express it. Write a thank-you note, send a message, or tell someone in person. This turns a private feeling into social connection.
Attach it to an existing habit. Pair it with your evening routine, a Sunday planning session, or your post-walk cool-down.
Keep it fresh. If it starts to feel like a chore, reduce frequency or change the format. A practice you keep beats a perfect one you drop.
Thanksgiving is a natural starting point. Try going around the table and having each person share one specific thing they are grateful for this year, then keep the habit going through the fall.
How LifespanMD Fits Gratitude Into Preventive Health
As Ottawa's personalized preventive health clinic, we treat mental and social well-being as part of the whole picture, not an afterthought.
Measure first. Your comprehensive assessment covers cardiovascular risk (including ApoB and Lp(a)), blood pressure, metabolic health, fitness, body composition, and sleep.
Prioritize by impact. Your multidisciplinary team builds a roadmap that puts your highest-yield actions first.
Support the whole person. Stress, sleep, connection, and mindset influence whether healthy habits stick. Simple practices like gratitude can support the plan.
Follow up. Ongoing coaching and re-testing keep you on track and adjust the plan as you progress.
This Thanksgiving, be grateful for your health, and invest in protecting it.
References
Chen Y, Okereke OI, Kubzansky LD, VanderWeele TJ, et al. Gratitude and mortality among older US female nurses. JAMA Psychiatry. 2024;81(10):1030-1038. doi:10.1001/jamapsychiatry.2024.1687
Mills PJ, et al. The role of gratitude in spiritual well-being in asymptomatic heart failure patients. Spirituality in Clinical Practice. 2015.
Redwine LS, et al. Pilot randomized study of a gratitude journaling intervention on heart rate variability and inflammatory biomarkers in patients with stage B heart failure. Psychosomatic Medicine. 2016. PMC4927423
Emmons RA, McCullough ME. Counting blessings versus burdens: An experimental investigation of gratitude and subjective well-being in daily life. Journal of Personality and Social Psychology. 2003;84(2):377-389.
Lee LO, et al. Optimism is associated with exceptional longevity in 2 epidemiologic cohorts of men and women. PNAS. 2019. doi:10.1073/pnas.1900712116
Holt-Lunstad J, Smith TB, Layton JB. Social relationships and mortality risk: A meta-analytic review. PLoS Medicine. 2010;7(7):e1000316.
Cregg DR, Cheavens JS. Gratitude interventions: Effective self-help? A meta-analysis of the impact on symptoms of depression and anxiety. Journal of Happiness Studies. 2021;22:413-445.
Mandsager K, et al. Association of cardiorespiratory fitness with long-term mortality among adults undergoing exercise treadmill testing. JAMA Network Open. 2018.
Please Note: This article is intended for general informational purposes only and does not constitute the practice of medicine, nursing, or any other regulated health care services in Ontario. The information provided here is not medical advice, nor does it create a doctor-patient or health care provider relationship. The use of this content, or any materials linked from it, is at the reader's discretion and risk. This information is not a replacement for professional medical consultation, diagnosis, or treatment. Readers should not ignore or delay seeking medical care for any health concerns they may have and are encouraged to consult qualified health professionals for appropriate care and medical advice.
