Recent studies recommend that we should decrease our protein intake for a long and healthy life; in the short term a high- protein diet helps people lose weight but in the long term, specifically the animal- based protein, it causes health problems and reduces life span because it increases the risk of diabetes and caner and even death in the middle age.
Diets high in carbohydrates and low in protein allow in longer life spans, so you should not pay attention to just calories but also to the type and amount of protein.
The high- protein diet especially from animals is almost considered as bad as smoking; the bad effects almost disappear if the protein is plant- based. However, older people above 60 years old seem to benefit from high- protein intake with a reduced risk of dying from cancer or any other cause because the factors causing damage, like the body’s ability to process protein, decline naturally with aging.
The increased risk of cancer for high protein is due to the amino acids of which protein is made as they increase damage to DNA and decrease cellular protection.
Actually, high- protein diets can also increase the risk of renal diseases and kidney stones. In a study on rats, it is revealed that rats on high- protein diet lost some of their body weight after few weeks but the weight of their kidneys increased as well as increased size of the capillaries filtering blood to the kidneys, also the citrate levels in urine was lower in addition to a high urinary ph, which are all factors for kidney stone formation and kidney failure.
Some studies on humans have shown similar results, and the bottom line is to reduce your animal- based protein intake and to eat big amounts of vegetables and fruits because they reduce kidney stone formation due to their contained magnesium and potassium.