What Is Nutritional ?

Define Nutrition is the way a food is digested and absorbed into the body. Nutrition is the biological and chemical process whereby an organism uses food to sustain its existence. It comprises absorption, assimilation, biosynthesis, digestion, metabolization and excretion. These processes together form the nutritional content of a food.

The nutritional content in foods is measured in terms of its nutrient composition. Nutrients are substances that add to or take away from a person's health. There are various substances that contribute to the nutritional quality of foods. Examples of these substances are vitamins, minerals, proteins, carbohydrates, fats, vitamins and hormones. The foods that contain all these substances together are called complete foods.

There are several organizations that define nutrition. The National Academy of Sciences is one such institution. It defines nutrition based on biological, ecological and environmental factors. The values it assigns to the different subjects of nutrition are referred to as nutrient criteria. These criteria determine what nutritional products a person can include in his diet.

The dietary guidelines of the National Academy of Sciences (NAS) define nutrition for individuals. These dietary guidelines are to be followed strictly for good health. They are also used to set down the level of calorie intake required by an individual for maintaining good health. The dietary guidelines help to control weight, regulate carbohydrate and fatty food consumption, set down the amount of protein, determine the amount of sodium and reduce caloric intake.

A wide number of books have been published to define nutrition. Dr. Evelyn Dew, a professor at Texas Woman's University, has written a number of books on this subject. Mary Scholes has written a very popular book entitled Foods That Define Nutrition. Dr. David Griswold and his wife Edy the mother of six have published a book entitled Essential Foods. The Fomonte School of Medicine at the University of Minnesota has published Nutrition and Your Children. In these books we find that nutritionists everywhere have developed their own lists of terms and concepts used to describe the nutrients and food groups.

The NAS definition of nutrition is a way of communicating the importance of various nutrient groups to our diet. The nutritional status of an individual is determined by his diet. Nutrient classification is usually done on the basis of the proportions present in foods. Foods that are rich in certain nutrients are classed as such. Other foods that are rich in some nutrients but lack in other essential nutrients are classed as poor in nutrients. Often an average dietary pattern may not adequately represent the nutritional status of an individual.

One may classify food as good or bad depending on its level of nutrient content. A diet should contain a balance of all the basic food groups, but a poor nutritional status will suggest foods with a very low nutritional value and those with a high level of nutrient richness. Good nutrition should provide a variety of foods in an equal proportion. It is also important to ensure that a person gets enough calories so that he/she is neither underweight or overweight.

The dietary requirements of individuals vary and they depend on their gender, age and even body size. There is no universal dietary requirement since everyone is different. Food habits are a major factor in shaping an individual's nutrition and they have a major impact on nutrient intake. Food habits can be changed by making changes in the diet. Changing the diet drastically can result in rapid weight loss, but it can also have serious side effects like dehydration and even organ failure. Individuals who are overweight should consult a dietician to help them design a good diet plan and ensure that they get all the nutrients they need.

What Food Allergies Is and How You Can Recognize Them

Food allergies occur when the body's immune system wrongly identifies proteins found in certain foods as a potential threat. Because of this, some chemicals are introduced into the body which result in an allergic reaction. It is these chemicals that ultimately cause the actual symptoms of a food allergy. If left untreated, however, food allergies can lead to severe illness and even death. Peanut and tree nuts are two of the most common food allergies. Many children have a food allergy to either one or both tree nuts and/or peanuts. A severe reaction may take hold if they are exposed to both tree nuts or peanuts at once. Overdosing on peanuts or tree nuts (especially peanuts) can lead to a life threatening high fever. Tree nuts and peanuts are both protein rich and have a long chain of amino acids. They are also both rich in protein and have several essential amino acids necessary for human development. For this reason, they are frequently found in a person's diet. They are als...

Stress Belly And Abdominal Obesity

Stress belly is what many women call the belly fat that shows up during pregnancy. It's often very unattractive and causes discomfort for most women. However, it's not a condition that only affects certain groups of women. In fact, anyone can develop stress belly during pregnancy. This is why so many people are trying to lose weight through diet and exercise, but they still have this belly fat. If you're wondering what causes this, here are some of the main causes. One of the most obvious causes of stress belly is the imbalance of hormones that often comes with major life changes. Some women are born with hormone imbalances that lead to major changes in their body, which is one of the biggest reasons for this condition. And even though stress belly is not a true medical condition, the resulting hormonal imbalances and stress cause serious health problems on the inside and out. If you have any kind of emotional stress, you're going to be at risk for developing some of th...

How to Interpret a Stress Strain Curve

In materials and metallurgy, a stress-strain curve in a material provides the mathematical relationship between strain and stress. It's obtained by slowly applying load to an instrument, taking readings of the deformation and calculating the stress. This process is called load cell application. The key to interpreting a stress-strain diagram is to know what the curve means and what it depicts. A stress-strain curve can have many different shapes, but it always follows a decreasing slope or U-shape. The most widely used shapes are the L-shaped curve (also called the isotonic curve) and the curved line. It's very important that you learn and understand these two important shapes. The stress-strain curve shows the relationship between the applied force and the deformed point. This can be thought of as the yield curve or strain yield curve of the particular material being tested. The yield curve is a measure of the energy change due to porosity, where the energy change is graphed a...

Allergic Reactions in Dogs

Allergies to dogs, just like allergies to people, can be prevented by keeping your dog clean. A clean house will also reduce the exposure that the dog has to different allergens that can cause an allergic reaction. Different allergens come from different types of foods and other substances that can be found in a home. Some common allergic reactions to dogs include runny nose, nasal congestion, hives, coughing, sneezing, itching, watery eyes, swelling of the face or lips, eyes that tear up easily and headaches. These symptoms are caused by the body's response to foreign materials or allergens. Dogs can get these allergies from a number of different things. Pollens from grasses and trees are the most likely culprits that can cause allergies. Other factors can be exposure to fleas or ticks. If you notice any kind of allergic reaction to a pet, then you should look at the breed of the dog and the common allergens that they are more prone to. You can talk to a veterinarian about the all...

Acne Treatment With Acne Band Aid, Proactiv and Clearasil - Do They Really Work?

If you have suffered the pain of acne, or acne scars from pimples that have been painful enough to make you not want to leave your home then you should think about trying an acne band aid. These small blue plastic sheets are used to seal the pimples and help to reduce swelling. Acne band aids work by applying a thick layer of band-aid tape to any open pimple. This seal helps to cut off the excess sebum which is what causes the pimples to form in the first place. Acne band aids are very popular and can be seen on nearly every TV commercial for skin products and treatments. One of the best things is that acne band aid ratings based on the number of stars present on the product. It has been determined that the more stars there are to an item the more effective it will be. There are two types of acne pimple treatment available to you, they are acne blemish removal and acne control. With acne blemish removal the acne band aid will be used to help cleanse the area surrounding the pimple and ...

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