Food is any material consumed to supply nutrition to an organism. Food is generally of animal, plant or fungi origin, and consists of nutrients, including proteins, fats, carbohydrates, vitamins, or minerals, which the body needs in order to maintain health. The body also uses some food for energy production and some is stored as fat and energy supplies for later use. When the body doesn’t get the right amount of the right kind of nutrients it feels tired and loses energy. Fat is used to burn up calories when the food isn’t supplied with the necessary vitamins and minerals that it needs.
Most modern diets are deficient in most vitamins and minerals essential for the maintenance of healthy bodies. There is an increasing tendency towards a diet which consists of mainly junk foods, whereas before it was possible to have a well balanced diet by eating good quality natural foods. The main problem nowadays is that because of the high convenience levels associated with food, we can hardly keep track of what we eat and how much of it we consume. It has become extremely difficult to judge the nutritional value of what we put into our mouths, even though the nutritional content of many processed foods is very low.
The modern diet usually consists of too much sugar, refined carbohydrates and trans-fats. This leads to a build-up of toxins in the body, leading to various medical problems, such as diabetes, kidney problems, cancer, etc. However, there are certain types of fats that are actually good for the health. These are the unprocessed fats that come from meat and fish and they contain vitamins A, D, E and K, as well as omega 3 fatty acids. Some plants contain vitamins A, D, and K naturally, whereas some vegetables may only have a minor portion of these, such as spinach and broccoli.
The second factor that you should consider is activity level. In this respect, activity level refers to the variety of physical activities a person engages in. For a healthy nutrition, you should try to engage in enough activity to ensure that your body receives all the nutrients it needs. The good news is that activity can be increased by performing more exercise. In fact, you should make sure that you engage in cardiovascular exercises, weight training and aerobics to increase your activity level. It will also help if you choose a program that combines fitness and nutrition.
Food sources rich in potassium, magnesium, phosphorus, thiamine, niacin, riboflavin and vitamin B12 are good for health, especially if you are trying to reduce your total energy deficit. Potassium is important for maintaining normal blood pressure while magnesium acts on maintaining the nerves, bones and other tissues. Phosphorus helps make muscle tissue. Last but not least, vitamin B12 is essential for maintaining nerves and other tissues as well. Foods containing mainly fatty acids are good for heart disease, but you should limit your consumption of these to prevent vitamin deficiencies.
There are many food groups, which provide different nutrients. A few examples of these food groups include protein, whole grains, vegetables and fruits, dairy products and fat. All these groups contain different nutrients, which are needed for maintaining a healthy weight. When choosing a food, you should choose a group that contains the nutrient you need to avoid feeling hungry. Foods containing mainly unsaturated fatty acids, protein, calcium, carbohydrates and fiber are considered to be a healthy diet.