For centuries, Chinese women have viewed collagen — a protein that binds tissues in fish and animals — as a fountain of youth, routinely consuming foods like pig’s feet, shark fins, and donkey skin in hopes of smoothing withered skin and preserving aging joints. In 2020, in the United States alone, consumers are expected to spend $293 million on collagen supplements, up from just $50 million in 2014, according to market research firm Nutrition Business Journal. Globally, as collagen makes its way into more foods and beverages, topicals, and even the operating room, the market is projected to reach $6.5 billion by 2025.
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