HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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I and II only
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I and III only
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II and III only
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I, II and III
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Detailed explanation-1: -The main treatment for PKU is a low-protein diet that completely avoids high-protein foods (such as meat, eggs and dairy products) and controls the intake of many other foods, such as potatoes and cereals.
Detailed explanation-2: -The aim of an PKU diet is to avoid protein-rich foods like meat, eggs, and dairy products while limiting your intake of foods like potatoes and cereals that contain significant amounts of phenylalanine.
Detailed explanation-3: -Supplementing with vitamin K may correct a deficiency. People with PKU may be deficient in several nutrients, due to the restricted diet which is low in protein and animal fat. Deficiencies of long-chain polyunsaturated fatty acids (LC-PUFAs), selenium, vitamin B12, and vitamin K may develop on this diet.
Detailed explanation-4: -There is no evidence to suggest that tyrosine should be routinely added to the diet of people with phenylketonuria. Further randomised controlled trials are needed to provide more evidence. However, given this is not an active area of research, we have no plans to update this review in the future.