The Centenarian Secret: 27 Foods Doctors Eat Every Day for Maximum Healthspan

Lisette Marie

19. Oysters: Zinc, B12, and Neuro-Longevity

A close-up of fresh raw oysters on a plate, showcasing their delicious and healthy appeal. Photo Credit: Pexels @Elle Hughes

Oysters are a potent, concentrated source of micronutrients essential for maintaining cognitive function deep into old age. They are the single richest food source of Zinc, a mineral critical for immune regulation, DNA repair, and synaptic plasticity (how brain cells communicate). They also deliver exceptional levels of Vitamin B12, which is crucial for preventing age-related brain atrophy and neurological decline. Consuming small amounts of oysters or mussels regularly (cooked or raw, depending on preference and safety) provides a highly bioavailable, dense packet of nutrients that specifically targets the integrity of the brain and immune system, two major determinants of healthspan.

20. White Tea: High EGCG and L-Theanine for Calm

A white ceramic mug on a tray, placed over a closed book on a wooden table. Photo Credit: Pexels @Artem Podrez

While black tea is mentioned, White Tea offers a unique longevity advantage due to its minimal processing, which preserves exceptionally high levels of Epigallocatechin Gallate (EGCG) and the amino acid L-Theanine. EGCG is a powerful antioxidant that protects against cellular aging. More critically for healthspan, L-Theanine promotes a state of relaxed focus by boosting alpha brain waves. Since chronic stress and high cortisol accelerate aging, this simple, delicate tea provides a subtle, non-sedating way to modulate the stress response, promoting the neurological calm necessary for sustained internal repair and resilience over decades.

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19. Oysters: Zinc, B12, and Neuro-Longevity

20. White Tea: High EGCG and L-Theanine for Calm

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