Top 1 in Top 10 misunderstandings about nutrition.
People often blame carbs and fats for various health problems. But even protein is not spared. The media often claim that protein is harmful to bones and kidneys.
Please handle both statements above.
A higher protein diet has shown a higher amount of calcium in the urine. There are two reasons given to explain this phenomenon.
The body draws its reserves of calcium (from bones) to deal with the level of acid generated from proteins. This suggests that high protein intake may lead to osteoporosis
Most studies on protein intake and calcium excretion have dairy products as a source of protein. So high levels of calcium in urine may be due to higher calcium intake (high intake, high intake). So just looking at calcium levels is not enough. Subsequent studies have shown that protein promotes calcium absorption, and a high protein diet will "promote bone growth and slow the process of osteoporosis, while a low protein diet will lead to a risk." higher hip fracture ”. Current evidence suggests that protein is actually harmless or even protects bones.
Other studies have determined that a high protein diet increases glomerular filtration rate (GFR), an indicator of kidney waste filtration. It has been argued that an increase in GFR is a sign of kidney stress, but subsequent research has shown that kidney damage is not caused by a high protein diet.
In summary, randomized trials did not show the effect of protein on the bones or kidneys of healthy adults.
Fact: Protein, even in large amounts, does not harm bones or kidneys (unless you have a medical condition).