The world of nutrition is an ever evolving beast where new studies are released every week about what one should or should not eat. Too much of "this" is not healthy, not enough of "that" and you're missing out on vital nutrients. One can go insane trying to keep everything straight.

With there being 3500 calories to 1lb of body weight, the macronutrients each play their role in energy amounts.

  • 1 gram of carbohydrates = 4 calories
  • 1 gram of fat = 9 calories
  • 1 gram of protein = 4 calories

Go in-depth with macronutrients:

Not what you're looking for? Check out micronutrients for lists of vitamins and minerals.