The multitude of research on calcium and calcium-rich drinks reveals a significant relationship between calcium intake and bone health. If this trend continues, not only will parents suffer from damaged teeth, leg boils, back pain, and muscle twitching, but they may also experience rickets, which can affect fetal and infant growth and development. In the elderly population, inorganic nutrition problems are primarily due to insufficient calcium supply, with musculoskeletal disorders prominently manifesting as osteoporosis. Some believe that elderly individuals, due to reduced absorption ability and progressive bone loss, should have a higher calcium intake than adults, especially postmenopausal women.
The U.S. Department of Agriculture found that among 5,500 women over 45 years old with normal conditions, their daily calcium intake was only 450 mg. Heaney conducted another survey showing that one-third of postmenopausal women consumed less than 350 mg of calcium daily. Given that postmenopausal women are highly susceptible to osteoporosis and fractures, it is attributed to long-term calcium intake below ideal levels. Therefore, it is suggested to enhance calcium supply for the elderly, recommending premenopausal women consume 1,000 mg of calcium daily, while postmenopausal women should absorb 1,500 mg to maintain bone health.
American scholars emphasize the need to address calcium deficiency across all age groups, noting that adaptation to low calcium intake is difficult for many people. Some individuals are particularly sensitive to bone mineralization disorders and have a high fracture risk, increasing with age and prolonged low calcium intake. Thus, developing new calcium supplements accessible to all ages becomes imperative.
Calcium-rich beverages represent an important means of calcium supplementation through food and medicine. Milk is an ideal calcium source but is rarely consumed after adolescence, especially by women. While some grains and vegetables contain high calcium, much is in insoluble salt forms, making utilization challenging. Research into alternative calcium supplementation methods began early. During World War II, some countries added calcium carbonate to flour to maintain calcium levels. Since the 1950s, Western countries have conducted extensive research in this area. By the 1980s, the U.S. experienced a calcium craze, with commercial calcium products seeing growing sales, significantly improving public health levels. For instance, Japan's national daily calcium intake increased from 389 mg in 1960 to 553 mg in 1985.
In response to China’s calcium deficiency situation, we initiated calcium-rich beverage research in 1988. The Wuhan City Science and Technology Commission organized an evaluation on March 16, 1991, where attending experts unanimously agreed that the scientific achievement was a domestic first, reaching the leading domestic level. They recommended early popularization and application to meet the population's calcium needs. These calcium-rich beverages, primarily using inexpensive calcium carbonate, were technologically processed to achieve high calcium concentrations, ionized, and easily absorbed by the human body, with good taste, stability, and calcium supplementation effects. Product quality inspections by the Wuhan City Wei 199r year students and the Wuhan City Epidemic Prevention Station confirmed compliance with GB2759-8L cold food health quality standards. The product requires low investment, has low costs, and offers good benefits, with vast potential market prospects for Chinese consumers, especially children, pregnant women, the elderly, women, postmenopausal women, athletes, and workers exposed to high temperatures for long-term drinking. It aids in preventing and treating rickets, osteomalacia, and osteoporosis, maintaining bone and overall health as an ideal health beverage.
Clinical practice shows that previous simple interrupted sutures and "8" sutures had apparent flaws. Interrupted catgut sutures for the muscle layer and subcutaneous tissue involve more gut content, absorption, wound dehiscence, infection opportunities, and prolong release time, usually taking 5 days to remove stitches. The "8" suture reduces infection chances and shortens stitch removal time but involves multiple needle insertions, increasing maternal pain. Mixed-type perineal sutures synthesize these two methods, utilizing mixed techniques. Its main advantages include fewer needle insertions, less tissue damage, reduced perineal wound infections, decreased maternal pain, shorter release time, improved wound healing rate, and enhanced hospital bed turnover rate.