Complete Keto Diet Food List 2026 — What to Eat & Avoid (Net Carbs Listed)

On a standard ketogenic diet (20–25g net carbs/day), you can freely eat: all meats (beef, chicken, pork, lamb, turkey), all fish and seafood (salmon, tuna, sardines, mackerel, shrimp), whole eggs, full-fat dairy (butter, ghee, cream, hard cheeses, sour cream), avocados, most nuts (walnuts, almonds, macadamia, pecans), all leafy green vegetables and above-ground vegetables (broccoli, cauliflower, spinach, asparagus, zucchini), olive oil, coconut oil, avocado oil, and small portions of berries. The single rule: keep net carbs under 20–25g per day. Net carbs = total carbs minus dietary fiber.

Net carbs = Total carbohydrates − Dietary fiber (and certain sugar alcohols like erythritol). Example: Broccoli has 7g total carbs and 2.4g fiber per 100g = 4.6g net carbs. Avocado: 9g total carbs − 7g fiber = 2g net carbs. The fiber subtraction is valid because dietary fiber is not absorbed into the bloodstream and does not raise blood glucose or insulin (soluble fiber partially ferments in the colon, but this has minimal impact on ketosis). Important: do NOT subtract all sugar alcohols — maltitol and sorbitol DO raise blood sugar significantly and should not be subtracted. Only subtract erythritol fully, and subtract others at 50%.

Most people enter a mild state of nutritional ketosis (blood BHB >0.5 mmol/L) within 2–4 days of eating under 20g net carbs/day and depleting liver glycogen. Full ketoadaptation — where the body efficiently uses ketones as its primary fuel for the brain and muscles — takes 2–6 weeks. Symptoms of the transition ("keto flu": headache, fatigue, brain fog, irritability) typically occur in days 2–5 and resolve by day 7–10. Adequate electrolytes (sodium, potassium, magnesium) significantly reduce keto flu severity.

Keto-compatible fruits (in small portions): Strawberries (3g net carbs/100g — excellent), Blackberries (5g/100g), Raspberries (6g/100g), Blueberries (12g/100g — limited to ¼ cup), Avocado (2g/100g — a fruit botanically, keto staple), Tomatoes (3g/100g — excellent), Olives (3g/100g — excellent). Fruits to avoid completely on keto: bananas (20g net carbs each), grapes (17g/100g), mangoes (13g/100g), apples (12g/100g), oranges (10g/100g), most tropical fruits. One banana contains your entire day's carb allowance on standard keto.

For keto beginners, focus on these simple staple foods to build meals around: Proteins — eggs (any style, 0.6g carbs each), chicken thighs (0g carbs, easier to cook than breast), ground beef (0g carbs). Fats — butter and ghee (0g carbs), avocados (2g net carbs), olive oil. Vegetables — spinach and kale (1–2g net carbs/cup), broccoli (4g/cup), cauliflower (3g/cup). Dairy — cheddar cheese (1g/oz), cream cheese (1g/oz). These 12 foods cover all nutritional bases and are available in any grocery store. Master cooking these before worrying about advanced keto recipes.

Short-term keto (3–6 months) is very well-tolerated and safe for most people with strong evidence for weight loss and blood sugar control. Long-term keto (12+ months) requires attention to: (1) fiber intake — keto diets are often very low in fiber, which harms gut microbiome; supplement with psyllium husk and eat keto-compatible fiber sources. (2) Micronutrients — magnesium, potassium, and some B vitamins may be low; supplement or choose nutrient-dense keto foods. (3) Gut health — the diversity restriction of keto can reduce gut microbiome diversity; eat 30+ different keto plant foods. Most experts recommend cyclical keto (5 keto days + 2 moderate carb days) or targeted keto for long-term sustainability. Never start keto with diabetes or kidney disease without medical supervision.

The "keto flu" is a cluster of symptoms that occur in days 2–7 of starting keto: headache, brain fog, fatigue, irritability, muscle cramps, and dizziness. It is caused primarily by electrolyte loss — when you reduce carbohydrates, insulin drops, kidneys excrete more sodium, and potassium and magnesium follow. The cure and prevention: (1) Sodium — add 2–3g extra salt to food daily, drink bone broth, use electrolyte supplements. (2) Potassium — eat keto-compatible high-potassium foods (avocado, salmon, spinach). (3) Magnesium — 300–400mg magnesium glycinate daily. (4) Hydration — drink 2–3L water daily as kidney filtration increases. With proper electrolytes, keto flu is largely preventable.

Keto does not inherently restrict calories — it restricts carbohydrates. Your calorie target on keto depends on your goal: for weight loss, calculate your TDEE and subtract 500–750 calories (same as any fat loss diet). For maintenance, eat at TDEE. The standard keto macro distribution is: 70–75% fat, 20–25% protein, 5% carbohydrates. However, most experts recommend prioritizing protein first (0.8–1g per pound of body weight) and then filling the remaining calories with fat. The ketogenic state is maintained by carbohydrate restriction, not fat intake — you don't need to eat excessive fat. Use our free Macro Calculator for personalized keto targets.

Some alcoholic beverages can be consumed on keto with care: Zero-carb options — pure spirits (vodka, gin, rum, tequila, whiskey) have zero carbs in a standard 1.5oz serving. Low-carb wine — dry red and white wines have 2–4g carbs per 5oz glass. Avoid completely on keto: beer (10–15g carbs per can), sweet wines (5–20g), cocktails with juice or mixers, sweet liqueurs. Alcohol on keto has important caveats: (1) Your body metabolizes ethanol before fat, temporarily pausing ketone production. (2) Alcohol tolerance drops significantly on keto — you get drunk faster and more intensely. (3) Alcohol impairs sleep quality, raises cortisol, and reduces fat burning the next day. Best approach: occasional consumption of spirits or dry wine, not daily drinking.

Essential keto supplements: (1) Electrolytes — sodium (salt, bone broth), potassium (200–400mg from supplement or high-K foods), magnesium glycinate 300–400mg — these prevent keto flu and are required ongoing due to reduced renal retention. (2) Vitamin D3 + K2 — important on keto as dairy and fat intake changes affect vitamin K2 balance. (3) MCT Oil — medium-chain triglycerides that convert directly to ketones; help maintain ketosis during transitions and provide quick brain energy. (4) Exogenous ketones (beta-hydroxybutyrate salts) — optional but help accelerate ketosis entry and provide energy during the adaptation phase. (5) Fiber supplement (psyllium husk) — important for gut health as keto diets are naturally low in fiber. (6) Omega-3 fish oil — if not eating fatty fish 3+ times/week.