2. Protein (10-15% of your diet)
Definition : nutrients that contain nitrogen as well as
carbon, hydrogen, and oxygen.
Function : growth and repair of body tissue, and an energy
source.
3. Protein
Amino Acids : chemical substances that
make up proteins.
Essential amino acids: nutrients your body
cannot produce or store so you must get them
through food. Nine of the 20 amino acids are
essential.
Complete protein : food that has all essential
amino acids (animal products, soy, poi)
4. Source of Proteins
A wide range of foods are a source of protein. The best
combination of protein sources depends on the region of
the world, access, cost, amino acid types and nutrition
balance, as well as acquired tastes. Some foods are
high in certain amino acids, but their digestibility and
the anti-nutritional factors present in these foods make
them of limited value in human nutrition.
5. Function of Proteins in Human
Body
Proteins vary in structure as well as function. They
are constructed from a set of 20 amino acids and
have distinct three-dimensional shapes. Below is
a list of a few types of proteins and their functions:
Antibodies defend the body from germs.
Contractile proteins are responsible for
movement.
Enzymes speed up chemical reactions.
Storage proteins store amino acids.
6. Protein Diet
High Protein Diet
A high-protein diet is often recommended
by bodybuilders and nutritionists to help efforts to build
muscle and lose fat. It should not be confused with low-
carbdiets such as the Atkins Diet, which are not calorie-
controlled and which often contain large amounts of fat.
7. Protein Diet
Low Protein Diet
A low-protein diet is a diet in which people
reduce their intake of protein. A low-protein
diet is often prescribed to people
with kidney or liver disease.
Foods to avoid are any animal byproduct such
as meats, eggs, fish, poultry, milk, yogurt, chee
se,
Pulses, etc
8. Protein deficiency
Protein deficiency and malnutrition can lead to
variety of ailments including mental
retardation and kwashiorkor. Symptoms of
kwashiorkor include apathy, diarrhea,
inactivity, failure to grow, flaky skin, fatty liver,
and edema of the belly and legs. This edema
is explained by the action of lipoxygenase on
arachidonic acid to form leukotrienes and the
normal functioning of proteins in fluid balance
and lipoprotein transport
