Fuel Diets21 approaches

Pick the approach

Honest guides to the diet approaches people actually try, from calorie counting and high protein to keto, Mediterranean, plant-forward, DASH, and GLP-1. Find the one that fits your life, then let Fuel handle the daily targets.


Start here
CountingUpdated Aug 24, 2026

Calorie Counting

Your calorie target is a hypothesis, not a number.

Most-flexible diet
Every diet
Protein-ledUpdated Jul 23, 2026

High-Protein Diet

High-protein eating supports fat loss, muscle retention, appetite control, and recovery, and it pairs with nearly any food preference. The hero number is per-meal: 0.4 g per kg of body weight, four times a day.

Macro splitUpdated Jul 3, 2026

Keto Diet

The keto diet is a very low-carb, high-fat approach that pushes the body into ketosis, a metabolic state where ketones provide a larger share of fuel.

Whole-foodUpdated Aug 23, 2026

Mediterranean Diet

The Mediterranean diet is the most studied way of eating in the world, and the most misunderstood.

Medication-pairedUpdated Jul 3, 2026

GLP-1 Diet

If you're taking GLP-1 medications like semaglutide (Ozempic, Wegovy) or tirzepatide (Mounjaro, Zepbound), your relationship with food has probably changed dramatically.

Low carbUpdated Jul 23, 2026

Low-Carb Diet

A low-carb diet restricts carbohydrates and leans more heavily on protein and fat.

Low fatUpdated Apr 26, 2026

Low-Fat Diet

An honest, spectrum-based guide to low-fat eating, from general guidelines through Pritikin, Ornish, and Esselstyn, plus the medical indications where fat restriction is genuinely first-line therapy.

Heart-healthyUpdated Aug 23, 2026

DASH Diet

The DASH diet stands for Dietary Approaches to Stop Hypertension, and it's the most rigorously trialed eating pattern ever built around blood pressure.

Plant-forwardUpdated Apr 26, 2026

Vegetarian Diet

Vegetarian eating done well: the easy mode of plant-based diets with eggs, dairy, and the Adventist Health Study 2 longevity data showing 12% lower all-cause mortality. Plus the protein-combining myth, hidden animal ingredients, and a 4-week transition plan.

Plant-onlyUpdated Apr 26, 2026

Vegan Diet

A well-built vegan diet is one of the best diets ever studied for human health.

Weekly cadenceUpdated Apr 26, 2026

Slow-Carb Diet

Tim Ferriss popularized the slow-carb diet in The 4-Hour Body in 2010, and it has stayed relevant because the structure is unusually clear: a short list of allowed foods, five rules, and one day off per week.

Eating windowUpdated Jul 2, 2026

Intermittent Fasting

An honest guide to intermittent fasting protocols, from 16:8 to alternate-day fasting, covering what the randomized trials actually show, the metabolic switch, the autophagy claims that outrun the human evidence, and the mortality evidence.

Ancestral-leaningUpdated Jul 9, 2026

Paleo Diet

Short trials of the complete paleo pattern report metabolic improvements in people with type 2 diabetes or metabolic syndrome. Here is what the trials found, why the early advantages fade, and how to manage the diet's nutrient gaps.

Energy densityUpdated Jul 23, 2026

Volumetrics Diet

Volumetrics uses energy density instead of macro exclusions. Build meals around water-rich, fiber-rich foods so a larger amount of food can fit inside a calorie deficit.

30-day resetUpdated Aug 24, 2026

Whole30 Diet

A 30-day elimination and reintroduction protocol with no published controlled trial of the branded program and a rule list that has changed over time. Here is what the program asks of you and what backs it.

Biomarker-ledUpdated Sep 2, 2026

Anti-Inflammatory Diet

The anti-inflammatory diet is not one clinical protocol. It is a food-scoring concept built on the Dietary Inflammatory Index, with randomized evidence in rheumatoid arthritis and metabolic syndrome and limited case-series and cohort evidence in IBD.

Weight ManagementUpdated Jul 15, 2026

Carnivore Diet

The carnivore diet eliminates plant foods and dietary fiber. Here is what the limited evidence can establish, which nutrient gaps appear in modeled diets, and what to discuss with a clinician before trying it.

Weight Management, Diet StrategiesUpdated Aug 24, 2026

Flexible Dieting

Flexible dieting fixes calories and protein, sets a floor for food quality, and lets everything else move. This guide covers setup, targets, tracking, adjustment, and the failure modes that turn flexibility into drift.

Dietary RestrictionsUpdated Aug 16, 2026

Low FODMAP Diet

A three-phase elimination and reintroduction protocol for IBS-type gut symptoms, built from the Monash trial data and adapted for athletes who need to protect fiber and training fuel while they test triggers.

Cognitive HealthUpdated Aug 23, 2026

MIND Diet

The MIND diet was developed at Rush University to study dietary patterns associated with cognitive decline and Alzheimer's disease.

Weight ManagementUpdated Jul 23, 2026

Zone Diet

The Zone Diet fixes every meal at a 40/30/30 carb-protein-fat ratio using a block-counting system. This guide tests the eicosanoid theory against the trial record and compares blocks with counting grams.