How will a person look if his her diet is deficient in both carbohydrates and proteins for a long time
Answers
Answer:
We have discussed what proteins are, how they are made, how they are digested and absorbed, the many functions of proteins in the body, and the consequences of having too little or too much protein in the diet. This section will provide you with information on how to determine the recommended amount of protein for you, and your many choices in designing an optimal diet with high-quality protein sources.
How Much Protein Does a Person Need in Their Diet?
The recommendations set by the Institute of Medicine (IOM) for the Recommended Daily Allowance (RDA) and AMDR for protein for different age groups are listed in Table 6.2 “Dietary Reference Intakes for Protein”. A Tolerable Upper Intake Limit for protein has not been set, but it is recommended that you do not exceed the upper end of the AMDR.
Age Group RDA (g/day) AMDR (% calories)
Infants (0–6 mo) 9.1* Not determined
Infants (7–12 mo) 11.0 Not determined
Children (1–3) 13.0 5–20
Children (4–8) 19.0 10–30
Children (9–13) 34.0 10–30
Males (14–18) 52.0 10–30
Females (14–18) 46.0 10–30
Adult Males (19+) 56.0 10–35
Adult Females (19+) 46.0 10–35
The appropriate amount of protein in a person’s diet is that which maintains a balance between what is taken in and what is used. The RDAs for protein were determined by assessing nitrogen balance. Nitrogen is one of the four basic elements contained in all amino acids. When proteins are broken down and amino acids are catabolized, nitrogen is released. Remember that when the liver breaks down amino acids, it produces ammonia, which is rapidly converted to nontoxic, nitrogen-containing urea, which is then transported to the kidneys for excretion. Most nitrogen is lost as urea in the urine, but urea is also excreted in the feces. Proteins are also lost in sweat and as hair and nails grow. The RDA, therefore, is the amount of protein a person should consume in their diet to balance the amount of protein used up and lost from the body. For healthy adults, this amount of protein was determined to be 0.8 grams of protein per kilogram of body weight. You can calculate your exact recommended protein intake per day based on your weight by using the following equation:
(Weight in lbs. ÷ 2.2 lb/kg) × 0.8 g/kg
Note that if a person is overweight, the amount of dietary protein recommended can be overestimated.
Explanation: