It’s not just about calories

In assessing the healthiness of any food, there are many, many variables that come into play, including fat, sugar, fibre, vitamin and mineral content.
However, the parameter that almost always gets the most attention is the calorie content — the amount of energy the food contains per 100 grams. This is undoubtedly an important number — after all, the laws of thermodynamics dictate that if our energy intake from food exceeds our energy expenditure from physical activity, the inevitable consequence will be weight gain.