(NaturalNews) If you are interested in your health and well-being, healthy diets are of prime importance. The science of dietetics is concerned with feeding groups and individuals. Specializing in this area are dietitians, the health professionals with training to provide safe, factual dietary advice and interventions. Additionally, the science of nutrition examines the relationship between health and diet.
Actually, in relationship to food the word diet has two different meanings. Ordinarily, diet is the usual daily food and drink consumed. On the other hand, someone can also be dieting by following one of numerous diets regulating selections of food usually for cosmetic or medical reasons for gaining or losing weight.
Theoretically, the energy value of food and the energy spent in daily activity are measured in units of heat called kilocalories, which are referred to as calories. Consequently, diets for gaining or losing weight are based upon calories taken in and calories used in activity. When people take in more calories than they use, they gain weight. If they take in fewer calories than they use, they will lose weight. Unfortunately, dieting to lose weight is usually a mistake resulting in the person "finding" the weight they "lost". As a matter of fact, sometimes even more weight is gained aggravating the situation even further. Clearly a much better plan would be life-style changes for weight management including exercise and better food choices aimed at maintaining optimal health. Always seek a doctor's advice before beginning any diet program.
As a rule, special diets may be prescribed for health reasons. Accordingly, diabetic diets are ordered to limit sugar intake, while low-salt diets are prescribed for heart and kidney conditions. What is more, people can have allergic reactions to many foods including eggs, milk, nuts, seafood, strawberries, and wheat. Hence, these foods cannot be consumed in their diets. Sometimes these allergies are difficult to pinpoint and should be diagnosed by a physician.
Moreover, some people choose to limit certain foods for environmental, health, morality, religious, or other reasons. For one thing, people eliminating animal products to varying degrees include plant-based diets of fruitarians, living foodists, raw foodists, vegetarians, and vegans. Be this as it may, careful attention should be paid to not developing dietary deficiencies, for instance of Vitamin B12. Furthermore, some religious cultures restrict unacceptable foods from their diet. Examples include Halal foods for Islam, and Kosher food allowed in Judaism.
Usually, a daily balanced diet containing all the food nutrients necessary to keep a person healthy by building and maintaining tissues and regulating bodily functions includes carbohydrates, minerals, proteins, vitamins, certain fats, plus water. However, dietary habits or habitual choices defining cultures and religions may affect health resulting in dis-ease and mortality. Briefly, calcium, iron, and vitamins A, B, C and D, are often eaten in smaller than recommended amounts. Examples of deficiency diseases include scurvy from a lack of vitamin C and anemia from a lack of iron. In addition to these, some other ailments resulting from deficiencies, excesses, and imbalances of diets eventually producing negative impacts upon an individual's health include cardiovascular disease, diabetes, obesity, osteoporosis, or psychological and behavioral problems.
In the final analysis, human nutrition is complex and a healthy diet varies widely depending on environment, genetic make-up, and health condition. On the whole, a person's diet varies according to activity, age, climate, health, and weight. Ultimately, healthy diets result in optimum health and well-being.