Proteins and Amino Acids
Too little protein may cause changes in body composition that develop over a long period of time, such as muscle wasting. The most severe form of protein deficiency is known as kwashiorkor.
Kwashiorkor is a form of severe protein malnutrition characterized by edema and an enlarged liver with fatty infiltrates. It is caused by sufficient calorie intake, but with insufficient protein consumption, which distinguishes it from marasmus. Kwashiorkor cases occur in areas of famine or poor food supply. Cases in the developed world are rare.
People can typically consume 2 g of protein per kg of their body weight daily, long-term, without any significant side effects. Some people, such as elite athletes, may be able to eat as much as 3.5 g per kg of body weight daily without any side effects. Most research indicates that eating more than 2 g per kg of body weight daily of protein for a long time can cause health problems. Symptoms associated with too much protein include: intestinal discomfort and indigestion, dehydration, unexplained exhaustion, nausea, irritability, headache, diarrhea.
Recommended daily intake: