Why Dr. Peter Diamandis Takes 75+ Supplements & Uses AI to Hack His Health

Diamandis emphasized that 5 days was better than 4, and far better than 3, contradicting the idea that older adults need more rest days. He used a split routine with a trainer (arms, back, legs, etc.) going to exhaustion. In maintenance, he does 3 full-body days and 2 split days (legs, upper). He stressed the importance of scheduling workouts as non-negotiable, often right after commitments. He also noted that having a trainer kept him accountable and pushed intensity beyond what he'd do alone. This protocol, while demanding, is feasible with commitment and tracking.

Based on their data, Diamandis advocates focusing diet on low glycemic index foods, even if that means higher fat intake, rather than following a low-fat, high-whole-grain diet (since grains can spike blood sugar). He says the goal is to minimize sugar, including from alcohol, chocolate, and hidden sources. He notes that some people with great lipid panels still have plaque, while some with 'bad' lipids have little plaque—pointing to glucose as the key mediator. This suggests that a low-sugar, moderate-fat diet may be more cardioprotective than the traditional high-carb, low-fat approach.

Diamandis described his journey: he used Snorelab to discover he had 'epic snoring.' He tried CPAP but found it unbearable. A dentist-fitted MAD transformed his sleep—it also prevents teeth grinding. He cannot sleep without it now, always travels with it. He noted that mouth tape is a cheap alternative that can approximate the effect by encouraging nasal breathing, though not as effective as a custom device. Good sleep is foundational to his longevity approach.

Diamandis admitted this is his biggest struggle: he lives a fast-paced life. He tries to slow down during meals. Ben Greenfield suggested scheduling meal times as consumption/learning moments (watching videos, reading) to shift into a more relaxed state, or having meals with family to promote parasympathetic tone. This protocol is simple in concept but requires intentional habit changes.

Diamandis explained that when they ran correlations on all biomarkers from their first 5,000 members, hemoglobin A1C—the 90-day average glucose attached to red blood cells—had the highest predictive value for heart disease. Lipid metrics were not the strongest. This is consistent with his oft-repeated mantra that 'glucose is a poison; sugar is a poison.' He emphasized that even people with high LDL, high HDL, high triglycerides can have very little plaque if their glucose control is tight, and conversely, people with excellent lipids can harbor dangerous soft plaque if glucose is high. The underlying biology: glycation damages the endothelium and drives inflammation, making soft plaque more likely to rupture. He believes the public and many doctors are overly focused on cholesterol, and that minimizing sugar—including from alcohol, grains, and high-glycemic foods—is the single most important dietary lever for heart health, regardless of lipid levels.

Diamandis detailed the mechanism: Soft plaque sits within the coronary artery walls. If it breaks away or erodes, it can block the artery, starving heart muscle of oxygen and glucose, causing a heart attack. This can happen to people with zero calcium score because the calcified plaque is stable cement, while the soft plaque is volatile. He notes that at Fountain Life, they use Cleerly (an AI algorithm on top of CT angiography) to visualize both calcified and soft plaque. He sees members all the time who have good lipid panels and no symptoms but have significant soft plaque. He urges everyone, especially those over 50, to go beyond a CAC and get a CCTA with AI to see the full picture. This redefines the standard of care for proactive longevity seekers.

Diamandis stressed that the body is incredibly good at hiding disease until late stages. Only at stage 3 or 4 cancer do people feel symptoms. So the goal is to detect early. Fountain Life's membership (tiers up to $21,000) includes a fleet of tests: CCTA with AI, brain MRI/MRA, full-body MRI, DEXA, retinal scan, whole genome, gut microbiome, toxin panels, etc. All 200 GB of data is fed into an AI system built on Anthropic's Claude 3.7, which members and their physicians access via app. The medical team (functional medicine doctor, nurse, dietitian, health coach) interprets and creates a year-long plan, then re-tests. Diamandis believes this is the model for longevity medicine: not looking at a single MRI but integrating all data to make decisions, avoiding unnecessary interventions while catching lethal conditions early.

Diamandis encourages everyone to use powerful LLMs to query their own health data: if genome-sequenced, drop the file in; upload blood biomarker reports and ask what's optimal, what supplements might help, interactions, etc. He personally uses GPT-3o, Grok, and Anthropic Sonnet. Fountain Life's app uses Sonnet 3.7 as the backend AI analyst. He emphasizes that the critical skill now is learning how to prompt these models effectively. This democratizes health knowledge, leveling the playing field outside of formal medical education.

Diamandis shared that at Davos in January 2025, Dario Amodei said AI could double human lifespan in 10 years, and Demis Hassabis predicted curing all disease in that timeframe. He sees this as a signal that the breakthroughs will come from reasoning models, not just wet-lab biology. The $101M Healthspan X-Prize he's running aims to restore muscle, immune, and cognition function by 10-20 years within one year. He believes that we are on the cusp of a healthspan revolution, and the mission is to add 10 healthy years now, so you can intercept the next wave of breakthroughs that will add another 10, and so on.