Our mission is to help you achieve your health ambitions through ketosis by enhancing your fast.

We translate advances in metabolic and brain-health research into products that are simple to understand, easy to use, and designed to unlock the multifold benefits of fasting, from weight loss and autophagy to longevity and mental clarity.

Working with experienced scientists and formulators and guided by cutting-edge research on metabolics, ketone biology, and cognition, we build solutions tailored to the realities of how you fast today.

Why Now?

The science around energy metabolism is rapidly changing how we think about health and performance.

Over the last two decades, research on intermittent fasting, time-restricted eating, and our ketogenic metabolisms has shown that changing when and how we fuel can influence body weight, insulin sensitivity, blood sugar control, and other key markers of metabolic health.

At the same time, work on ketone bodies like beta-hydroxybutyrate (BHB) has highlighted their dual role as both an efficient fuel and a signaling molecule that can impact inflammation, gene expression, and mitochondrial function.

In parallel, there is growing interest in how fasting and ketogenic states can:

Improve insulin sensitivity and help reduce reliance on frequent high-sugar intake
Support cognitive function and stable energy levels by providing the brain with an alternative, endogenous fuel source
Assist with weight management and fat loss by encouraging greater use of stored fat as fuel
Boost metabolic markers linked to diseases such as type 2 diabetes, and are being actively researched for potential roles in cancer risk reduction and adjunctive care.
Influence pathways related to learning and memory and modulate cellular processes related to repair and stress resistance

These advances offer a path to more proactive, physiology-aligned ways of supporting everyday health and wellbeing.

Kētos exists to bring this emerging science down to earth in a form you can integrate into your daily fasting routines.

Science is Our Core Value

Behind every Kētos product is a simple standard: If we can’t explain why an ingredient belongs in a fasted, ketogenic context, it doesn’t go in.

In crafting our solutions we draw on the latest research in intermittent fasting and the ketogenic metabolism in partnership with world-leading scientists in the field.

Our approach is intentionally conservative and focused -- we start with the scientific mechanism. Does this ingredient or dosage make sense for a fasted, ketosis-supportive environment? We align with real-world protocols, designing around how people actually fast (16:8, 18:6, 24-hour fasts, multi-day protocols), not just idealized lab conditions. Most of all, we prioritize clarity and transparency because we believe everyone should be able to read a label and understand what they're taking and why.

How we Started

Kētos began with a simple frustration shared by serious fasters, builders, and science-focused founders -- “I can find products for bulking, pre-workout, and sugar-heavy ‘energy’… but almost nothing built for my actual fasting routine.”

On one side, there was a growing body of research around fasting and metabolic flexibility. On the other, supplement aisles and wellness brands that still assumed constant snacking and high sugar.

The gap was obvious. We were experimenting with 16:8, OMAD, extended fasts, and keto cycles and many of us were working in high-focus professions, training hard, or juggling demanding schedules. But we found very few products that were designed to give clean support in a fasted state, without undermining the very protocols we were committed to.

We created Kētos to serve the you. We exist so that when you choose to fast you don’t have to navigate it alone.

MADE IN THE USA

Proudly crafted in the USA with ultra-premium ingredients you can trust.
FREE 2-4 DAY SHIPPING

Free 2-4 day USA shipping with tracking on all orders.
NO HASSLE 30 DAY RETURNS

No hassle 30 day returns on unopened packages.
THIRD-PARTY TESTED

Produced in a FDA-registered, GMP-certified facility for purity and safety.