Updated August 27, 2026.
Intrinsic capacity is the World Health Organization's term for the sum of all your physical and mental capacities: your ability to move, think, see, hear, stay nourished, and stay emotionally steady. Aging researchers increasingly prefer it to age itself as a measure of how you are actually doing, because it tracks function rather than birthdays, and because most of its components respond to how you live, including how you eat.
Where the Term Comes From
The New York Times put the concept in front of a general audience this week in a piece by Dana G. Smith calling intrinsic capacity possibly the most important longevity term you have never heard of, reporting that it is quickly becoming a preferred way to measure and assess human aging. The term itself is older: the WHO introduced it in its 2015 World Report on Ageing and Health, and it now anchors the WHO's framework for healthy aging, which defines the goal not as the absence of disease but as maintaining the functional ability to do the things you value.
The timing of the mainstream attention is not accidental. Life expectancy in the United States is rising again; The Wall Street Journal's editorial board noted this week, citing new CDC data, that Americans are living longer. Longer lifespans sharpen the question that intrinsic capacity was built to answer: not how long you will live, but how well you will function across those added years. Researchers often shorthand this as healthspan versus lifespan.
The Five Domains of Intrinsic Capacity
| Domain | What It Covers | Everyday Examples |
|---|---|---|
| Locomotion | Mobility and physical movement | Walking speed, rising from a chair, balance |
| Cognition | Thinking, memory, attention | Recall, orientation, problem-solving |
| Vitality | Energy and nutritional status | Appetite, weight stability, grip strength, energy metabolism |
| Sensory | Vision and hearing | Seeing and hearing well enough to engage with the world |
| Psychological | Mood and emotional wellbeing | Mood, outlook, absence of persistent low spirits |
Clinicians assess these domains with simple screening tools; the WHO's ICOPE program (Integrated Care for Older People) publishes a step-by-step screening pathway that primary care practices can run in minutes. A declining score in any domain is meant to be a prompt for early action, years before anything would show up as a diagnosis.
Can You Improve Intrinsic Capacity?
This is the reason researchers like the measure: unlike your age, it is modifiable. The WHO framework and the research reviewed in the New York Times coverage consistently point to the same levers, none of them exotic: regular physical activity (especially strength and balance work for the locomotion domain), staying cognitively and socially engaged, treating hearing and vision problems rather than living with them, adequate sleep, and a nutrient-dense eating pattern. These are unglamorous, compounding habits. Intrinsic capacity gives them a scoreboard.
Where Nutrition Fits: The Vitality Domain
Nutrition is the backbone of the vitality domain, and it feeds every other domain indirectly, since muscles, brains, eyes, and moods all run on what you eat. The dietary pattern evidence here is among the most consistent in nutrition science. A 2017 meta-analysis by Aune and colleagues in the International Journal of Epidemiology, covering 95 prospective studies and roughly 2 million people, found higher fruit and vegetable intake associated with lower risk of cardiovascular disease and all-cause mortality, with benefits rising through roughly five daily servings. The Dietary Guidelines for Americans, 2025-2030 reach a compatible conclusion from the other direction. The current edition sets the target at 3 servings of vegetables a day at 2,000 calories, where a serving is 1 cup raw or cooked or 2 cups leafy greens, and about 90 percent of Americans do not eat the recommended amount. That makes vegetable intake one of the clearest gaps between what the longevity research rewards and what people actually do.
In plain terms: nobody's intrinsic capacity plan starts with an exotic supplement. It starts with eating enough plants, moving, sleeping, and staying engaged, done consistently for decades.
Where SaladPower Fits
SaladPower exists for exactly one part of that picture: making the vegetable habit consistent. Each USDA Certified Organic pouch blends six whole ingredients, spinach, kale, carrot, broccoli, apple, and lemon, into 5 to 6 cups of vegetables per third-party testing commissioned by our manufacturer. Against a recommended 3 servings a day, that is roughly 2x the recommended daily vegetable intake, at under 100 calories, with no added sugar and no prep. Per its Nutrition Facts panel, one pouch is an excellent source of vitamin A and vitamin C, nutrients that support normal immune function, an excellent source of iron, which supports normal energy metabolism, and a good source of fiber and potassium, which support normal digestion and normal muscle function.
None of that is a longevity claim, and no food is. Intrinsic capacity is built from a whole pattern of living. A sealed pouch of whole vegetables is simply a way to make one proven input, daily vegetables, hard to skip on the days when a real salad or a sheet pan of roasted broccoli is not going to happen.
Frequently Asked Questions
What is intrinsic capacity in simple terms?
It is the World Health Organization's measure of everything your body and mind can do: moving, thinking, seeing, hearing, staying nourished, and staying emotionally steady. It treats aging as a question of function rather than years.
How is intrinsic capacity measured?
Through brief screenings across five domains: locomotion, cognition, vitality, sensory, and psychological. The WHO's ICOPE screening pathway uses quick checks like walking speed, a short memory task, appetite and weight questions, and vision and hearing checks.
Can intrinsic capacity be improved?
Research indicates the domains respond to modifiable habits: physical activity including strength and balance training, cognitive and social engagement, correcting vision and hearing problems, sleep, and a nutrient-dense diet.
What does diet have to do with intrinsic capacity?
Nutritional status is the core of the vitality domain, and diet supplies every other domain. Large studies, including a 2017 meta-analysis of about 2 million people, associate higher vegetable and fruit intake with lower all-cause mortality, while USDA data shows about 90 percent of Americans fall short on vegetables.
Is intrinsic capacity the same as healthspan?
They are related but not identical. Healthspan is the number of years lived in good health. Intrinsic capacity is a measurable score of current function that researchers use to track and protect healthspan as lifespans lengthen.
Sources
- Smith, D. G. "The Most Important Longevity Term You've Probably Never Heard Of." The New York Times, August 26, 2026. nytimes.com
- The Editorial Board. "You're Living Longer, Americans." The Wall Street Journal, August 27, 2026. wsj.com
- World Health Organization. World Report on Ageing and Health, 2015. who.int
- World Health Organization. Integrated Care for Older People (ICOPE): Guidance on person-centred assessment and pathways in primary care. who.int
- Aune, D., et al. "Fruit and vegetable intake and the risk of cardiovascular disease, total cancer and all-cause mortality: a systematic review and dose-response meta-analysis of prospective studies." International Journal of Epidemiology, 2017. doi.org/10.1093/ije/dyw319
- U.S. Department of Agriculture and U.S. Department of Health and Human Services. Dietary Guidelines for Americans, 2025-2030. realfood.gov
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
