ELi5: How do they measure calories etc for nutritional labels?

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I always wonder how “they” can know the exact amount of fiber, protein, carbs and sugars, etc when I’m reading ingredient labels.

PS: couldn’t decide between biology or chemistry flair since I guess my question relates to biochemistry! Haha

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Anonymous 0 Comments

It depends a lot based on gender, genetics, health conditions, and goals. Calorically depends a lot if you aim to lose weight or gain. High protein is important if you aren’t sedentary or exercise. Carbs and sugars are more particular unprocessed vs processed foods/simple vs complex carbs. Complex require more energy to digest and are recommended for consumption over simple but it’s about moderation. There’s also calories you burn by just living called Basal Metabolic Rate which differs by each person. Essentially, pick high fiber and protein packed foods and mostly avoid high sugar and processed foods. Sugar is fine in fruit imo. If weight loss is your goal, counting calories is now seen as counterintuitive mental health wise but you burn more calories than consumed=equals weight loss. Factor in muscle growth in terms of weight if you lift.

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