Basic things which person has to know:

Eat your Vitamins

The best way for people to get their vitamins is by eating them. Why? A diet of whole grains, vegetables and fruits offers the vitamins and minerals that meet the body’s needs. A person who takes multivitamins can easily exceed the daily recommended amount of vitamins that his or her body needs. 

Eat less meat

The mainstays of a healthy diet should be grains, nuts, and seeds, as well as non starchy vegetables and fruits, rather than meat. Whole grains (oatmeal, brown rice, whole-wheat bread) provide fiber, which aids the digestive system and makes you feel fuller, and B vitamins, which can boost energy and aid metabolism.

Separate your fats

Fat has more calories per gram than carbohydrates or protein, so if you’re trying to maintain or lose weight, limit the amount of fat you eat.

Eat, don’t drink, your calories

Beverages don’t fill you up in the same way that foods do: Studies have shown that people eat the same amount whether or not they wash down their food with a 150-calorie drink. And most beverages don’t contribute many nutrients.

Limit packaged foods and read labels

Many nutritionists recommend shopping the perimeter of a supermarket, where fresh foods, such as fruits and vegetables, are usually sold, and avoiding highly processed foods, which tend to be found in boxes in the center aisles.

_{In today’s food industry you can’t be too sure about what you are eating, so it’s important to learn the things you need to know about food. I know the last thing we care about while eating a delicious and flavorful meal is what it consists of.However, knowing the origins of that meal might give you a different perspective on your food.}