Fats. Fat has the most calories of all the nutrients: 9 calories per gram.

Each gram of fat supplies the body with about 9 calories, more than twice that supplied by proteins or carbohydrates.

Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.

While there are many essential nutrients, they can be broken into two categories: macronutrients and micronutrients.

There are six major nutrients: Carbohydrates (CHO), Lipids (fats), Proteins, Vitamins, Minerals, Water.

The six essential nutrients are vitamins, minerals, protein, fats, water, and carbohydrates.

Here are 5 healthy diets that are scientifically proven to be effective.

1. Low-carb, whole-food diet. The low-carb, whole-food diet is perfect for people who need to lose weight, optimize health, and lower their risk of disease.
2. Mediterranean diet.
3. Paleo diet.
4. Vegan diet.
5. Gluten-free diet.

Supplements for Weight Loss

• Chitosan.
• Chromium Picolinate.
• Conjugated Linoleic Acid (CLA)
• Glucomannan.
• Green Tea Extract.
• Green Coffee Extract.
• Guar Gum.
• Hoodia.

Vitamin content of f ruit and vegetables