From a medical point of view, pig's trotters are a multi-purpose drug. Trotters are rich in collagen, which is a colloid composed of biological macromolecules and the most important protein component in tendons, ligaments and connective tissues. In human body, collagen accounts for about one third of protein. If the synthesis of collagen is abnormal, it will cause "collagen disease".
During bone formation, it is necessary to synthesize enough collagen fibers to form the skeleton, so collagen is also "bone in bone".
In addition, after the collagen in pig's trotters is absorbed by human body, it can promote skin cells to absorb and store water, prevent skin from drying and wrinkling, and make facial skin look plump and shiny. Zhang Zhongjing, a famous doctor in Han Dynasty, wrote an article "Pig Skin Prescription", pointing out that the skin on pig's trotters has the function of "nourishing blood and moistening skin". A British beauty master observed that eating pig's trotters often can make the face symmetrical and plump.
Collagen can also promote the growth of hair and nails, keep skin soft and delicate, and keep nails shiny. Regular consumption of pig's trotters can also effectively prevent progressive malnutrition, have a certain effect on gastrointestinal bleeding and hemorrhagic shock, and improve systemic microcirculation, thus preventing or alleviating coronary heart disease and ischemic encephalopathy. For the elderly after operation and recovering from serious illness, it is beneficial to the recovery of normal physiological functions of tissues and cells, accelerate metabolism and delay the aging of the body.
Pig's trotter soup also has the function of lactation, which can play a dual role in lactation and beauty.
However, pig's trotters are high in fat, and patients with chronic hepatitis, cholecystitis and gallstones had better not eat them.