Question 1

What is the difference between calories and kilocalories?

Accepted Answer

In everyday usage, 'calories' and 'kcal' (kilocalories) are used interchangeably. Technically, 1 kcal = 1000 cal. Nutrition labels always display kcal. When a serving has '200 calories', it actually means 200 kcal.

Question 2

How many calories do protein, fat and carbs have?

Accepted Answer

Protein: 4 kcal/g. Carbohydrates: 4 kcal/g. Fat: 9 kcal/g – more than twice as much. Alcohol: 7 kcal/g. This explains why high-fat foods are calorie-dense and why high-fat diets can easily lead to a caloric surplus.

Question 3

Do you need to count calories to lose weight?

Accepted Answer

Not necessarily. Calorie tracking is an effective tool but not mandatory. Alternatives: focus on protein-rich and fiber-rich foods (naturally filling), intermittent fasting, mindful eating without distractions.

Question 4

Are all calories equal?

Accepted Answer

No! 100 kcal from sugar and 100 kcal from broccoli have vastly different effects on satiety, insulin response and nutrient supply. Protein has the highest thermic effect (~25% of its energy is used for digestion). Quality matters at least as much as quantity.

Understanding Calories: What Are kcal and Why Do They Matter?