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Nutrition is a term with many definitions. Most people understand it to mean a good diet, a healthy lifestyle, and supplementation with vitamins and minerals. It can also mean the science of how the body utilizes foods and nutrients, or the actual food itself. Healthy food in its natural state, plenty of fresh air and water, regular exercise to build muscle and fitness, and supplements if needed will keep or restore health.
To be healthy requires more than calories. This measurement of heat or energy produced by digestion dates from the 18th century, when the value of a calorie was established. 'Empty calories' are foods that can cause weight gain but offer no true nutritional value to the body. It is now known that we need vitamins, minerals, fiber, and other nutrients to thrive.
Whole foods contain dense nutrition in their natural, fresh form. When people lived mainly on food they produced themselves, this was not as much of a problem as it is today. Fresh vegetables from the garden, fruits from bushes and trees, and meat from the barnyard or from wildlife were staples for many generations.
Today's store-bought food may have little natural goodness left in it. Foods are often modified to make them last longer on the shelf, to make them tasty, or to make them into snacks rather than main fare. Milk, for example, is no longer 100% pure, even though added ingredients do not need to be listed on the label. It is pasteurized, homogenized, and de-fatted, none of which is natural. White bread has lost the bran that provides needed fiber, is no longer partially digested before baking by beneficial yeasts, and may contain artificial coloring, flavoring, and preservatives.
Essential fatty acids differ in how quickly they become rancid. Some are removed entirely from shelf-stable foods, which creates an imbalance and eventually a deficiency. This is why health advocates have recommended extra Omega-3 fatty acids, most easily found in supplement form. Fiber is lacking in many diet plans, since white flour has had the fibrous bran removed. Vitamins fade quickly from fresh produce shipped from far away, and minerals are lacking when soils are depleted.
Food is said to be the best medicine. An effort should be made to get as much fresh, whole food as possible every day. Food allergies or sensitivities can complicate things for people who may already be suffering from malnutrition. Artificial colors, flavorings, and preservatives have proved harmful in laboratory studies, and many believe they aggravate such things as allergies, attention deficit disorder, and hyperactivity in children.
A healthy lifestyle involves more than diet. Exercise such as brisk walking, body building and weight training, or swimming is very important to increase circulation, encourage deep breathing, and tone muscles and internal organs. It helps maintain proper weight. Adequate intake of pure water, filtered if necessary, should be emphasized. At least eight hours of undisturbed sleep is considered beneficial.
Good nutrition is important to all who want to live long, healthy, productive lives. Pain, illness, and loss of productivity are some consequences of improper diets and sedentary habits. Many of us don't need doctors as much as we need to understand what our bodies need and how to provide it.
To be healthy requires more than calories. This measurement of heat or energy produced by digestion dates from the 18th century, when the value of a calorie was established. 'Empty calories' are foods that can cause weight gain but offer no true nutritional value to the body. It is now known that we need vitamins, minerals, fiber, and other nutrients to thrive.
Whole foods contain dense nutrition in their natural, fresh form. When people lived mainly on food they produced themselves, this was not as much of a problem as it is today. Fresh vegetables from the garden, fruits from bushes and trees, and meat from the barnyard or from wildlife were staples for many generations.
Today's store-bought food may have little natural goodness left in it. Foods are often modified to make them last longer on the shelf, to make them tasty, or to make them into snacks rather than main fare. Milk, for example, is no longer 100% pure, even though added ingredients do not need to be listed on the label. It is pasteurized, homogenized, and de-fatted, none of which is natural. White bread has lost the bran that provides needed fiber, is no longer partially digested before baking by beneficial yeasts, and may contain artificial coloring, flavoring, and preservatives.
Essential fatty acids differ in how quickly they become rancid. Some are removed entirely from shelf-stable foods, which creates an imbalance and eventually a deficiency. This is why health advocates have recommended extra Omega-3 fatty acids, most easily found in supplement form. Fiber is lacking in many diet plans, since white flour has had the fibrous bran removed. Vitamins fade quickly from fresh produce shipped from far away, and minerals are lacking when soils are depleted.
Food is said to be the best medicine. An effort should be made to get as much fresh, whole food as possible every day. Food allergies or sensitivities can complicate things for people who may already be suffering from malnutrition. Artificial colors, flavorings, and preservatives have proved harmful in laboratory studies, and many believe they aggravate such things as allergies, attention deficit disorder, and hyperactivity in children.
A healthy lifestyle involves more than diet. Exercise such as brisk walking, body building and weight training, or swimming is very important to increase circulation, encourage deep breathing, and tone muscles and internal organs. It helps maintain proper weight. Adequate intake of pure water, filtered if necessary, should be emphasized. At least eight hours of undisturbed sleep is considered beneficial.
Good nutrition is important to all who want to live long, healthy, productive lives. Pain, illness, and loss of productivity are some consequences of improper diets and sedentary habits. Many of us don't need doctors as much as we need to understand what our bodies need and how to provide it.
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