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There are only 3 main food groups: # Carbohydrates (starches) for energy, also for bulk to keep things moving through the intestines. # Proteins provide the amino acids for growth, maintenance & repair. # Lipids (fats) for energy, building cell membranes, & transporting fat-soluble vitamins around the body The above groups are classified as macronutrients, meaning that we require large quantities of them in our diet; we also require small quanties of vitamins and minerals, so these are classified as micronutrients. Water isn't really a food, but it's still an essential for life; a person will die from dehydration far quicker than they could starve to death.

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17y ago

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