Eating for Longevity
David Sinclair's eating approach for longevity: eat less often, lean plant-forward, cut sugar, and let mild hunger switch on the body's repair pathways. Principles, not a rigid diet.
Eat in a compressed window Aim for a 16:8-style pattern; a late first meal
Sinclair often skips breakfast (and lunch), eating later in the day. 'Being a little bit hungry is a good thing.' Start gently: skip just one meal, or push your first meal later.
Black coffee or tea while fasting No milk or sugar
Black coffee doesn't meaningfully break a fast and carries its own polyphenols. It's his go-to to bridge the morning.
Eat plant-forward, less meat Lots of colourful plants; olive oil; meat as the exception
A plant-heavy plate keeps mTOR lower, and colourful produce is rich in polyphenols. He cooks with olive oil (a sirtuin activator) and eats less meat than he used to.
Cut sugar and refined carbs Avoid sugary foods and drinks
He treats sugar and refined carbs as accelerants of aging through glycation and insulin spikes. Sugar-free swaps help with the transition.
Eat less often, snack less Fewer eating occasions
Constant grazing keeps the body in a fed, 'abundant' state that suppresses longevity genes. Reducing snacking is half the battle.
Watch your glucose response A continuous glucose monitor for a few weeks
He uses a CGM to learn which foods spike his blood sugar, then adjusts. A short stint is enough to learn your patterns.
This protocol works from your actual levels. Testing partner coming soon.
- Continuous glucose monitor
We may earn a referral fee if you book testing through a future partner link; it will never affect which tests are listed here. This is not medical advice or a diagnosis.
The throughline is hormesis: a little metabolic stress signals the body to switch on maintenance.
View sources
Lifespan with Dr. David Sinclair, Ep 2: What to Eat & When to Eat for Longevity
Fasting as a Path to Longevity: The Facts (Lifespan with Dr. David Sinclair)
Lifespan with Dr. David Sinclair - show notes
Not medical advice. This page is for education only and is not a substitute for professional medical care. Consult a qualified clinician before changing your health routine.
Independent curation. YourProtocol is an independent platform. This protocol is based on the publicly available work of David Sinclair and is not created, reviewed, endorsed by, or affiliated with David Sinclair or Harvard.
Is this for you
- People drawn to longevity who want eating principles, not a rigid plan
- Those ready to drop snacking and sugar
- Anyone easing into time-restricted eating
- Data-curious eaters who'll try a CGM
Cautions
- This is not for everyone. Skipping meals and longer fasts are not advised for anyone under ~18 to 20, during pregnancy or breastfeeding, or with a history of disordered eating.
- We deliberately don't give calorie targets. If food, weight or restriction feels stressful or compulsive, this protocol isn't for you, and support is available.
- If you take medication, especially for diabetes (insulin, metformin) or blood pressure, fasting can be risky without medical supervision. Talk to your doctor first.
- This is Sinclair's personal, self-experimented routine, not a proven prescription. A registered dietitian can adapt the principles safely to you.
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