This buildup occurs because the enzyme that routinely converts one amino acid, phenylalanine, to another amino acid, tyrosine, is absent or deficient. Phenylalanine then accumulates in the blood and is toxic to brain tissue. Babies born in the United States are screened for PKU with a blood test so treatment can begin immediately and prevent the adverse side effects of the condition, such as declining intelligence, neurological deterioration, stunted growth, hyperactivity and seizures.
A treatment team typically consists of a metabolic dietitian, physician, geneticist and psychologist as an infant is monitored during different phases of growth and development in childhood to an adult.
Aspartame in large doses can cause a rapid increase in brain levels of phenylalanine. Because of this, use products with aspartame cautiously if you:. If you aren't sure if phenylalanine or aspartame is a concern for you, talk to your doctor. A blood test to determine if you have PKU is available and is now routinely done as part of newborn screening. Katherine Zeratsky, R. There is a problem with information submitted for this request. Sign up for free, and stay up-to-date on research advancements, health tips and current health topics, like COVID, plus expert advice on managing your health.
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This content does not have an Arabic version. Medicinal plants importance. History of medicinal plants. Plant preparations. Special: Tea. Special: Sage. Special: Chamomille. Special: Rosemary. Natural medicine. Special: Cholesterol. Special: Obesity.
Natural food. Vegetarian recipes. Mediterranean diet. Nutrition for children. Food rich in iron. Special: Apples. Special: Strawberry. Special: Lemon. Special: Pear. Gardening tips. Scientific nouns of plants. Cultivation calendars. Growing vegetables. Close-up photography. Botanical significant places. Study of plants. Plant families. Plant activities. Plant animations. Extraordinary plants. Flower contest Do you know which flower is? Most nuts are high in protein, of which a significant amount is derived from phenylalanine.
Five walnuts contains mg, 10 almonds contains mg, and 30 roasted peanuts contains 1, mg. Peanut butter contains over 1, mg for almost an ounce. Soy products, including soy protein isolate, soybean flour and tofu, are also good sources.
According to the Aspartame Information Center, the artificial sweetener aspartame is found in more than 6, products, including carbonated soft drinks, chewing gum, yogurt, gelatin and cough drops, in addition to some pharmaceutical drugs including Alka-Seltzer and Benadryl.
Aspartame is half phenylalanine, by weight. One 36 mg packet therefore contains 18 mg phenylalanine.
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