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Longevity Atlas
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MCT oil / ketones

Ketone bodies as an alternative brain fuel: one 6-month RCT improved cognition in mild Alzheimer's; no convincing data in healthy people.

2/5Estimated monthly cost: ≈ 20
Dose

15–30 g C8 MCT daily, built up gradually.

Timing

Morning, in coffee or food.

Cautions

Diarrhoea, stomach upset; 30 g = 250 kcal, hampers weight loss; may raise LDL.

What it is

Medium-chain triglycerides (C8/C10) that convert quickly to ketones.

What the evidence shows

BENEFIC (Fortier 2021, n=83 MCI, 6 months, 30 g/day): better episodic memory and executive function. Small sample, industry-funded.

Goals

Brain, memory

Last reviewed: 6 September 2026

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