Diet Ratings
Essentially zero net carbs and zero calories. Caffeine supports ketosis and fat burning. Ideal beverage for keto diet.
Pure plant-based beverage made from roasted coffee beans. No animal products or animal-derived ingredients involved.
Unprocessed beverage from roasted coffee beans. No paleo restrictions; widely consumed in paleo community. Provides antioxidants and caffeine.
Unsweetened black coffee is a traditional Mediterranean beverage with antioxidants and minimal calories. Widely consumed in Mediterranean regions and aligns with diet principles when consumed without added sugar.
Plant-derived beverage but widely consumed by carnivore practitioners. Contains minimal carbohydrates and no nutritional plant compounds in meaningful amounts. Debated among strict adherents.
iStrict Lion Diet excludes all plant products including coffee. Baker, Saladino, and most practitioners accept black coffee as practical exception due to negligible carbs and established use.
Black coffee with no added ingredients is compliant. Coffee is a whole food beverage with no excluded ingredients.
Black coffee (without milk or sweeteners) contains no FODMAPs. Monash University rates black coffee as low-FODMAP with no serving restrictions.
Zero calories, zero sodium, zero sugar. Rich in polyphenols with potential cardiovascular benefits. NIH/NHLBI explicitly supports unsweetened coffee as part of DASH. No added ingredients.
Zero carbohydrate, zero glycemic impact. Contains polyphenols and chlorogenic acid with anti-inflammatory properties. Dr. Sears explicitly approves coffee as Zone-compatible beverage. Supports fat oxidation and mental clarity.
Rich in polyphenols and chlorogenic acid with strong antioxidant and anti-inflammatory properties. Supports healthy gut microbiome. No added sugars or inflammatory compounds. Moderate caffeine consumption is associated with reduced inflammatory markers in research.
Black coffee is essentially calorie-free, supports hydration (though GLP-1 reduces thirst sensation), and may aid appetite suppression and metabolism. Commonly recommended by GLP-1 specialists. No fat, protein, or fiber needed from this beverage—it's a supportive tool. Avoid adding sugar, cream, or high-fat milk.
Controversy Index
Score range: 6–10/10. Higher controversy = more disagreement between diets.