1, bad breath. When you replace carbohydrates in your diet with protein as much as possible, your body may enter a special energy-consuming state: your body starts burning fat to get energy. This is good for losing weight, but bad for your breath. When the body starts to consume fat, there will be a metabolite "ketone body", which will make your mouth taste like drinking nail polish cleaner.

2, hurt the kidney. After ingesting protein, you will get a nitrogen by-product. Your kidneys are responsible for filtering out these nitrogen by-products and discharging them in the form of urine. Daily intake will not affect your kidneys, but too much protein will bring a great burden to your kidneys. If people who consume high protein for a long time, it is recommended to check their renal function regularly.

3, gout. This is a headache for oncologists and nutritionists. When the intake of protein exceeds the need, many toxic metabolic residues will remain in human tissues after metabolism, which will lead to autotoxicity, pH imbalance (excess acidity), nutrient deficiency (some nutrients are forced to be excreted), uric acid accumulation, purine accumulation in tissues and so on.

Extended data:

You will see the Hulk in the gym are very angry, because they are really hardworking. But it is also possible that the intake of protein is too high and the intake of carbohydrates is too low. Your brain needs carbohydrates to provide nutrients for a series of operations, including the formation of hormones for emotional regulation. When you remove these carbohydrates from your diet, you will easily enter a state of irritability and emotion.

This statement is of course supported by scientific experiments. A research survey from Australia found that two groups of people with similar physical conditions lost weight, one group insisted on a strict low-carbohydrate and high-protein diet, and the other group was on a high-carbon water and low-fat diet. The former group showed more aggression and irritability, although the two groups lost almost the same weight.

Excessive intake of protein will promote glomerulosclerosis; If renal insufficiency and azotemia have occurred, the intake of protein should be limited to 20g per day, and high-quality protein (protein containing essential amino acids), such as milk and eggs, should be taken. Too much protein will aggravate azotemia and uremia.

References:

Beware of the four hazards of protein's surplus-Heilongjiang Channel-People's Network.