Thursday, December 20, 2012
Monday, December 10, 2012
The condition in which the body has so much fat is called obesity. Someone is considered to be obese if their weight is 20 percent over their ideal maximum or if their BMI is greater than 30. Around 30 percent of people in western countries are overweight and around five percent of them are obese. Long term obesity is a serious threat to health. It increases significantly the chances of developing high blood pressure, coronary artery disease, stroke, adult onset diabetes mellitus, certain cancers, osteoarthritis, back pain and varicose veins. Obese patients are advised under medical supervision, to lose weight using a calorie reduced diets and increased aerobic exercise.
Popularly, but incorrectly, known as the “slimmers’ disease”, anorexia nervosa is an eating disorder found mainly among teenage girls and young women, and only rarely increases. In fact, one in hundred of the women suffer from the condition and increasing to one in twenty in those categories of women, such as dancers actors especially concerned with their bodies. Anorexia may be a phobia about being fat or a symptom of mental illness. Whatever its cause, however anorexia is a serious illness in which the individual starves herself and may die. She not only loses her appetite but, more seriously, fails to have a normal perception of the size and shape of her body- she thinks she is fat even when she is way below her normal weight. The main features of anorexia are as follows; excessive weight loss, over activity, secretive and defensive behavior, being choosy about food, obsessive exercising, tiredness always feeling cold , induced vomiting, use of laxatives, thinning of hair on heat, appearance of Languo (Baby hair) on the body, dry skin and cessation of periods (amenorrhea). Anorexics require medical treatment and counseling.
Sunday, December 9, 2012
Studies have indicated a strong link between diet and the chances of developing certain cancers. Cancers of the colon, rectum and stomach may be up to 90 percent diet dependent and diet may be responsible for up to 35 percent of cancers in western countries. For example, there appears to be a close correlation between levels of fat consumption and incidence of breast cancer. In Japan fat provides 22 percent of energy requirements in the diet and the death rate from breast cancer is four per 100,000 people, in USA, fat provides 40 percent of energy requirements and the death rate is 24 per 100,000. Dietary components linked to cancers include:
Excessive alcohol- cancers of the bowel, liver, mouth, oesophagus, stomach and throat, especially in smokers;
Fatty and low fiber foods – breast and bowel cancers;
Pickled foods- stomach cancer;
Salt- cured meat and fish, nitrate- cured meat- throat and stomach cancers.
Dietary recommendations to reduce cancer risk:
Eat foods rich in fiber daily.
Eat fresh vegetables only.
Eat less fat.
Consume alcohol in moderation.
Eat fewer smoked and salted foods.
Keep weight at recommended level.
Saturday, December 1, 2012
Consist of a wide variety of natural foods that provide a balance of carbohydrates, fats,, proteins, vitamins, minerals and fibre.
Supply the body with sufficient energy to meets its needs;
Include only low levels of foods, such as those containing saturated fats, that increase the risk of developing diet related diseases, for instance coronary artery disease.
Each person has a certain requirement for energy, depending on their age and the amount of activity (or other forms of energy consumption, such as breastfeeding) involved in their daily life. Energy is derived from energy rich foods such as carbohydrates and, to lesser extent, fat. A diet that results in taking in more energy than the body requires in those conditions leads to obesity, while insufficient energy intakes leads to weight loss.