Diet Ratings
Natural peanut butter contains 3-4g net carbs per 2 tablespoon serving. Consumable on keto with strict portion control, but many commercial varieties contain added sugars.
iSome keto practitioners avoid peanut butter entirely due to omega-6 content and carbs, while others include small portions of natural varieties as part of a balanced keto diet.
Peanut butter is made from peanuts, a plant legume. Natural varieties with minimal additives are whole-food aligned; commercial varieties with added oils and sugars are acceptable but less ideal.
Peanuts are legumes, explicitly excluded from paleo diet. Often contains added oils and sugar.
While nuts are Mediterranean staples, peanut butter is processed and often contains added sugars and oils. Whole peanuts or other nut butters without additives are preferred. Portion control important.
iSome Mediterranean diet authorities accept natural peanut butter (no added sugar/oil) as acceptable in moderation, though tree nuts and seeds are traditionally emphasized over peanuts.
Peanut butter is plant-derived (legume). Completely excluded from carnivore diet regardless of processing or additives.
Peanuts are legumes. Legumes are explicitly excluded from Whole30 without exception. Most commercial peanut butters also contain added sugar and oils.
Peanut butter is low-FODMAP at standard servings per Monash University. Pure peanut butter contains minimal carbohydrates and no significant FODMAP content. Check for added ingredients like honey or high-fructose corn syrup.
Good source of plant protein, magnesium, and potassium. However, high in calories and fat (mostly unsaturated). Sodium varies by brand (50-200mg per 2 tbsp). Portion control essential. Natural/unsalted versions preferred.
Good protein (8g per 2 tbsp) and monounsaturated fat, but high caloric density and carbohydrate content (7g per 2 tbsp) require strict portioning. Omega-6 to omega-3 ratio suboptimal. Dr. Sears acknowledges peanut butter as usable fat source but emphasizes portion discipline and preference for tree nuts.
Good source of plant protein and contains resveratrol and other polyphenols. However, high in omega-6 polyunsaturated fat (pro-inflammatory in excess). Often contains added sugars and hydrogenated oils in conventional brands. Natural/unsweetened versions are preferable. Portion control essential due to caloric density.
iSome researchers (including some citing Weil's work) view peanut butter as acceptable in moderation due to polyphenol content and vitamin E. Others emphasize omega-6 concerns and prefer tree nuts. AIP protocol eliminates peanuts (legume, not tree nut).
Good protein (8g per 2 tbsp) but high fat (16g per 2 tbsp, mostly unsaturated). Fat content can worsen nausea and bloating in GLP-1 patients. Calorie-dense, requires very small portions. Better as occasional condiment than staple.
Controversy Index
Score range: 1–8/10. Higher controversy = more disagreement between diets.