Diet and Fitness

Iron functions and deficiency

Iron functions and deficiency

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Functions on the Body: Iron is generally absorbed from the whole of the gastro intestinal tract but most of it comes from the upper part of the small intestine mainly the duodenum. Dietary Iron is absorbed through the mucosal cells in ferrous form. Iron in diet is present in ferric state which is reduced to ferrous during absorption, with the help of Vitamin C, glutathione and amino acid –SH groups. After entering the mucosal cell in ferrous form, the iron molecules are soon reconverted into ferric state, which combine with a protein, apoferritin of the mucosal cells to form ferritin. Such ferritin is one of the storage forms of iron in the tissues, which passes into the blood. This ferritn iron gets reduced into ferrous from with the help of Vitamin C and enters the blood stream. After entering the blood stream this ferrous iron is re-oxidised into ferric from unde the catalytic action of copper-binding protein ceruloplasmin, and combines with iron binding globulin transferrin or iderophilin of the plasma. Thus the Transferrin iron complex is the transport form of iron of the plasma and is carried to the different tissues of the body. The protein-bound iron in the plasma per 100 ml is about 120-140 mcg in males, and 90-120 mcg in females. The total iron-binding capacity is about 300-360 mcg per 100 ml in both sexes.

Classification of Amino Acids

Classification of Amino Acids

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Though 300 amino acids occur in nature, about 20 amino acids are found in proteins. All the amino acids are required by the body but some are known as indispensable nutritionally essential amino acids, as these cannot be synthesized in the body, and their deficiency disturbs nitrogen equilibrium, growth, nutrition, maintenance, and life span. The others are termed as dispensable in the diet as there amino acids can be synthesized in the body, but they are more important to the cell than the essential ones.

There are 10 essential amino acids in humans: Arginine, Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan, and Valine. Arginine and Histidine are considered nutritionally semiessential, since they can be synthesized but not in quantities sufficient to permit normal growth. Two other amino acids, Cysteine and Tyrosine may be formed form the essential amino acids Methionine and Phenylalanine, respectively.

Dr. Oz visits on Oprah TV Show – discusses new book “You on a Diet”

Dr. Oz visits on Oprah TV Show – discusses new book “You on a Diet”

You: On a Diet: The Owner's Manual for Waist Management [AUDIOBOOK] (Audio CD)
by Michael F. Roizen (Narrator), Mehmet C. Oz (Narrator)

Dr. Oz and co-author Dr. Rozen have released a new book called “You on a Diet” and visited today on the Oprah TV show about ways that you can changer your lifestyle to help you lose weight.

Dr. Oz told Oprah that your health has to do with your waistline, even more than how much you weigh. If you stomach measures over 32 ½ inches for a women, or over 35 inches for a man then you are to heavy. This excess fat around your waist is hurting your health. You could have fat thighs and a small waist and even though you might be overweight it is not going to hurt your health as much.

Dr. Oz and Dr. Roizen have compiled successful books to help people with improving your health. Their first book “You the Owners Manual” put these doctors on the bestsellers lists at the book store. Now, with their new book, “You on a Diet” the doctor’s teams up again to tackle the tough subject on helping people maintain a healthy body weight. In this book, they discuss how your body works biologically to win at losing weight.

Increased risk for Colorectal Cancer in Low Folate Diets

Increased risk for Colorectal Cancer in Low Folate Diets

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A diet that is low in folate may increase the chances for developing colorectal cancer. The study conducted at MUHC was first reported in today’s scientific journal, Cancer Research. Another benefit that the same research team found with a high folate diet was the prevention of heart disease.

Foods that are fortified with folic acid which is a synthetic form of folate are breads, cereals, flours, corn meals, pastas and rice. Foods that contain naturally high levels of folate include soy beans, spinach, lettuce, and asparagus to name a few.

Health Commissioner of New York City wants Calorie Counting on Restaurant Menus

Health Commissioner of New York City wants Calorie Counting on Restaurant Menus

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Not only is New York City wanting to have restaurants remove the use of Trans fat in their food preparation, but now the city’s health department wants certain restaurants to disclose the calorie count of food on their menus too.

McDonald’s for example may in the near future have to show the price and the calorie count on the menu board hanging on the wall. This would only include restaurants that have standardized portion sizes. Many of these are national fast-food chains, which are already disclosing calorie and nutrition information in a more discreet manor.

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