Firstly let's take a look at a dictionary description of Nutrition:

"Nutrition is interpreted as the analysis of the organic progression by which an organism assimilates and uses food and liquids for habitual functioning, growth and protection and to keep the equilibrium between healthiness and sickness. Additionally built-in is the conception of an optimum balance of nutrients and whole foods, to permit the optimal performance of the body."

In the weight loss industry nutrition could be defined as to eating a balanced amount of macro-nutrients, these are proteins, carbs and fats, that your body requires regularly.

What's more, to get balance, your foods should come from all food groups, these are: Fruit, Vegetables, Grains, Dairy and Meats.

The amounts that you eat from every group depend or are limited to the quantity of calories you need to take in on a daily basis.

On the subject of the emotional eating field, you have to know that whatever feelings are triggering your eating, you increase over time a physical or physiological dependence, for 99% of the population this is just not an addiction and can be a function of habit that you can solve with tools and effort, however, this 'dependency' is contributing to cravings and Nutrition can help with minimizing the cravings that come from your body, your physiological cravings.

If you give your body the right balance and amount of nutrients it requires every single day, the nutrition allows it to detox your body, absorbs what it requires and it stops requesting for food, conversely, if you don't eat the proper dose and balance of nutrients from a deficient diet, no matter how many calories you provide it, it will ask for food (cravings) and we make the cycle worst when sensing appetite and then giving ourselves the wrong foods, maintaining the body starved of what it requires and causing cravings again.

To get an idea of what it will take to get a balanced nutrition we present below an example according to the US Department of Agriculture's 'Food Pyramid' for a 2000 calorie eating plan:

Grains (Get half your grains whole).

Consume a minimum of 3 ounces of whole-grain cereals, breads, crackers, rice, or pasta each day.

1 ounce is about 1 slice of bread, approximately 1 cup of breakfast cereal, or 1/2 cup of cooked rice, cereal, or pasta.

Greens (Vary your vegetables).

Consume more dark-green greens like broccoli, spinach, and other dark leafy greens.

Get more orange veggies like carrots and sweet potatoes.

Get more of dry beans, kidney beans and lentils.

Fruit (Emphasis on fruits).

Select fresh, frozen, canned or dried fruit.

Go easy on fruit juices.

Dairy (Consume your calcium-rich foods).

Pick low-fat or fat-free when you consume milk, yogurt, and other milk products.

If you don't or can't take milk, consume lactose-free goods or any other calcium sources like fortified foods and beverages.

Meat & Beans (Go lean with protein).

Select low-fat or lean meats and poultry.

Bake it, broil it, or grill it.

Modify your protein routine - include more fish, beans, peas, nuts, and seeds.

Based on a 2,000 calorie healthy diet, eat the amount of each food as listed below:

Grains: Take 6 ounces every single day.
Greens: Consume 2 1/2 cups each day.
Fruit: Eat 2 cups daily.
Dairy: Get 3 cups every single day.
Meat and Beans: Consume 5 1/2 ounces each day.

One way of learning nutrition is following a commercial diet, healthy balanced diets today not only provide all the nutrients your body requires daily but can also target specific illnesses like a low triglycerides diet or a low cholesterol diet, find a good healthy diet that fits your lifestyle and that contains the foods you enjoy.