Americans love protein; in fact, most Americans eat twice the amount of protein recommended by the Institute of Medicine (IOM) of the National Institutes of Health. (It recommends about 50 gm of protein per day for the average adult. For reference, a cut of animal protein the size of a deck of cards contains about 21 gm of protein) While the media and food marketing companies suggest that these high levels of protein make us strong and healthy, a growing body of science disagrees, reminding us that when it comes to nutrition, more isn’t necessarily better. While protein is critical for good nutrition, too much can cause problems, such as an acid-base imbalance, which can undermine bone and overall health. The food we eat profoundly impacts this balance.
Our bodies operate best at an overall pH of 7.35. When we eat foods that create acids (typically those that are high in protein and low in minerals), the body needs to buffer the acid in order to maintain its pH. The buffering process taxes the respiratory system and other organs, works the kidneys harder, and can draw calcium out of the body. In addition, research has shown that cancer development and growth is much greater in even slightly acidic conditions.