Protein deficiency generally weakens the body and the immune system and slows healing of any injuries. In its more severe form it causes a disease with the peculiar name kwashiorkor (this name has an African etymology, since the disease is primarily seen in Africa).
You will feel extremely tired, and void of energy. You will have trouble with any physical activity, your concentration will be hindered, and you may experience some dizziness. It depends largely on substitutions. A diet of carbohydrates will produce all of these effects and more, whereas a diet of fruit and vegetables will only leave you somewhat fatiqued.
The body uses proteins from foods to break down into amino acids, for protein synthesis (the process of creating proteins within cells.).
As a result a lack of proteins in the diet will cause an inability to produce the body's own required proteins which will lead to slower growth and repair of cells (and assuming your question is referring to multi-celled organisms) a lack of overall health (disease / infection) due to a lower number of white blood cells being produced.
Note that for most people who are eating enough calories to maintain body weight, protein deficiency is nearly impossible, unless you are consuming the bulk of your daily calories via "empty" calories, like refined sugar, refined fat, or alcohol. If you are not getting enough protein because you are not getting enough food, that is called starvation, also known as kwashiorkor. The symptoms of kwashiorkor include:
Without enough protein, the body may experience muscle weakness, fatigue, slow wound healing, and a weakened immune system. Severe protein deficiency can lead to stunted growth, impaired organ function, and eventually death. It is important to consume enough protein to support the body's growth, repair, and maintenance processes.
Symptoms of a diet deficient in protein are not immediately apparent, as the body will use stored protein if dietary protein is inadequate. After a while, symptoms such as brittle nails or hair loss will appear. Muscle loss and low blood pressure are both later symptoms.
Phenylalanine. This amino acid is found in protein-containing foods like meat, fish, eggs, dairy, beans, and nuts. Following a low-phenylalanine diet can help manage PKU symptoms and prevent complications.
too much protein in urine
Yes. all vegan foods contain protein; apart from fruit and oils. If you are eating enough calories from a wide variety of foods you will be getting enough protein.
One of the main symptoms of sarcopenia, muscle loss with aging, is an inadequate intake of calories or protein. Another symptom is a decrease in your body's ability to synthesize protein.
If you are eating enough calories for your weight/activity level, then you will undoubtedly get enough protein; because (complete) protein is found in every food.
procalirie
They have quite a bit of protein in them; enough so that they are considered protein foods.
you get sick
there will not be enough amount of amino acids present in the protein deficient food, hence there will not be enough protein synthesis.
Symptoms of a diet deficient in protein are not immediately apparent, as the body will use stored protein if dietary protein is inadequate. After a while, symptoms such as brittle nails or hair loss will appear. Muscle loss and low blood pressure are both later symptoms.