The 5 Best Foods for Longevity, According to Science

When David Sinclair sat down for a recent interview and a plate of five foods was placed in front of him, his response was telling: these aren't just healthy foods. Each one of them activates specific biological pathways that slow cellular ageing. Here's what they are, and why they work.

1. Blueberries

Blueberries are packed with anthocyanidins — the polyphenols responsible for their deep purple-blue colour. These compounds directly activate sirtuin pathways, mimicking some of the cellular benefits of fasting and exercise.

The key is quantity, not excess. A handful is ideal — enough to get the polyphenol benefits without overloading on sugar. "A better choice would be something like matcha, which is not full of sugar," notes Sinclair, though blueberries remain one of the best whole-food sources of longevity-activating polyphenols.

2. Matcha green tea

Matcha deserves its reputation. Unlike regular green tea, authentic Japanese matcha is grown under shade conditions before harvest — deliberately stressing the plant to maximise polyphenol production. The result is a tea with extraordinarily high concentrations of catechins and other longevity-activating compounds.

Always choose unsweetened matcha. The sugar in commercial matcha drinks counteracts the polyphenol benefits entirely.

3. Avocados

Avocados bring a different set of benefits — not primarily polyphenols, but polyunsaturated fats that are highly anti-inflammatory and deeply satisfying. Chronic inflammation is one of the primary drivers of age-related cellular damage. Avocados help to reduce it, while also providing satiety that naturally supports intermittent fasting protocols.

4. Extra virgin olive oil

Cold-pressed, high-quality extra virgin olive oil is rich in oleocanthal (a natural anti-inflammatory) and omega-9 fatty acids that activate sirtuin pathways. Sinclair takes a teaspoon each morning, often mixed with resveratrol, to improve the polyphenol's absorption.

Quality matters enormously here. Look for cold-pressed, recently harvested olive oil — the polyphenol content degrades significantly with heat processing and age.

5. Brussels sprouts

The least popular item on the list, but arguably the most powerful. Brussels sprouts contain sulforaphane — a compound that activates NRF2, a key cellular stress-response protein. Sulforaphane directly stimulates hormesis pathways, triggering the same cellular defence mechanisms as exercise and fasting.

The key is not to overcook them — light steaming preserves the sulforaphane content. And if you genuinely can't stomach them, sulforaphane is also available as a supplement.