Protein restriction is a form of dietary restriction, which refers to reducing the total intake of protein, or reducing the proportion of protein in the diet when the total food intake remains unchanged; or Limit the intake of a specific amino acid.
Research on protein restriction tends to involve dietary patterns, however, it is important to be clear before introducing dietary patterns: all results involving dietary restriction are not universally applicable, for example, the nutritional needs of young and old are very different. When we discuss what to eat, we first see if we meet the prerequisites for this dietary recommendation, such as age.
Many resaerches on the human body with different intakes of protein show that a high-protein, low-carbohydrate diet may cause cardiovascular disease, endanger health, and increase mortality. Therefore, restricting protein intake may be an effective means of preventing cardiovascular disease. Need to add that protein restriction is not suitable for the elderly! While there is evidence for the benefits of protein restriction, our conclusions do not apply to all. Recent research has also shown that there is no association between protein intake and increased mortality in people 50 or older.
Also, low-protein intake reduced IGF-1 levels, cancer incidence, and all-cause mortality in people under age 65, but increased mortality in those over 65 years on a low-protein diet . This may be related to the different nutrient needs of people of different ages.
The above content tells you that if you want a balanced nutrition, young and middle-aged people should eat more vegetables and less meat. In addition, thin people need to eat more rice. For the elderly over 65 years old, it is necessary to consume a moderate amount of animal protein to reduce muscle loss.