Clear explanations of nutrition concepts such as protein, fiber, glycemic response, energy density and nutrient quality.
An E-number is a European identifier for an authorized food additive. The “E” is not a danger rating and does not mean synthetic: ascorbic acid, pectin, and guar gum all have E-numbers. Authorization applies to specified food uses and conditions, so the same additive cannot simply be used without limits in every product.
A large “0” on the front of a package only tells you something if you know what it refers to. Under U.S. rules, “fat free” generally means less than 0.5 g fat per reference amount and serving, while “sugar free” means less than 0.5 g sugars. “No added sugar” is a different claim about formulation and does not guarantee zero Total Sugars.
Under U.S. FDA rules, “natural flavor” covers flavoring constituents derived from plant, animal, dairy, seafood, egg, yeast, or fermentation sources using processes such as extraction, distillation, roasting, heating, or enzymolysis. The significant function must be flavoring rather than nutritional. The term says little by itself about calories, sugar, processing level, or overall food quality.
WHO recommends reducing saturated fat to about 10% of total energy or less. At 2,000 calories, that equals roughly 22 g. The U.S. FDA Daily Value is 20 g on a 2,000-calorie diet. The goal is not simply to remove saturated fat, but to replace some of it with unsaturated fats or fiber-rich carbohydrate foods.
WHO recommends keeping free sugars below 10% of daily energy and suggests going below 5% for additional benefits. At 2,000 calories, that is under 50 g and preferably under 25 g. In the U.S., the FDA Daily Value for added sugars is 50 g on a 2,000-calorie diet. Neither limit applies to every gram of total sugar in whole fruit, plain milk, or similar foods.
Free sugar is a broader public-health concept than added sugar. It includes sugars added during manufacturing or preparation, but it also includes sugars naturally present in honey, syrups, fruit juices, and juice concentrates. That is why a product can show 0 g Added Sugars and still contribute free sugars.
For U.S. and Canadian adults, the Acceptable Macronutrient Distribution Range for total fat is 20–35% of calories. At 2,000 calories, that is about 44–78 g per day because fat provides roughly 9 calories per gram. Fat is not optional: it supplies essential fatty acids, supports cell structure, and helps the body absorb vitamins A, D, E, and K.
WHO recommends less than 2,000 mg of sodium per day for adults, equivalent to less than 5 g of salt. The U.S. FDA Daily Value is less than 2,300 mg sodium, which is about 5.75 g salt equivalent. To convert sodium to salt, multiply grams of sodium by 2.5; 400 mg sodium is approximately 1 g salt.
The National Academies set Adequate Intakes for total water at about 3.7 liters per day for men and 2.7 liters for women ages 19–30, including water from beverages and food. In the survey data used to set those values, beverages supplied about 3.0 L for men and 2.2 L for women. Exercise, heat, diet, pregnancy, and lactation can move needs substantially.
For U.S. and Canadian adults, the carbohydrate RDA is 130 g/day, while the Acceptable Macronutrient Distribution Range is 45–65% of total calories. At 2,000 calories, that range equals about 225–325 g. The 130-g RDA is not a universal optimal target; it was set largely around glucose needs and is different from the broader intake range used to build complete diets.
There is no single correct calorie number for all adults. Daily expenditure combines resting metabolism, the thermic effect of food, and physical activity, and it varies with age, sex, height, weight, body composition, and activity level. The familiar 2,000-calorie figure on food labels is a reference value, not a personalized energy prescription.
Yes, you can cook with protein powder. Heat unfolds and aggregates proteins—a process called denaturation—just as it does when you cook eggs or milk, and it does not erase their amino acids. Very severe or prolonged heat, especially with reducing sugars or alkaline conditions, can promote reactions that reduce availability of some amino acids such as lysine.