营销话术证据 C · 证据有限
喝胶原蛋白 / 骨汤补回身体胶原
真相
口服胶原在肠道被拆成氨基酸, 不会原样送到皮肤关节 (Paul 2019); 水解胶原肽有弱信号, 但 Myung 2025 显示非企业资助研究无显著效果, 骨汤剂量则是盲盒。
机制速览
你吃下去的胶原蛋白，不会原样被送到脸上或膝盖里。它是蛋白质，进了消化道就和任何蛋白一样，被胃酸和蛋白酶切碎。
来源（2）
- Paul, C., Leser, S., & Oesser, S. (2019). Significant amounts of functional collagen peptides can be incorporated in the diet while maintaining indispensable amino acid balance. Nutrients, 11(5), 1079.
- Virgilio, N., Schön, C., Mödinger, Y., van der Steen, B., Vleminckx, S., van Holthoon, F. L., et al. (2024). Absorption of bioactive peptides following collagen hydrolysate intake: a randomized, double-blind crossover study in healthy individuals. Frontiers in Nutrition, 11, 1416643. Pro-Hyp and Hyp-Gly dipeptides are absorbed intact and peak in blood 60-120 min after intake. Note: the id says 'skov' but the first author is Virgilio (id kept because content files cite it). Design: pilot randomised double-blind crossover in 6 healthy volunteers (3 women, 3 men), single 10 g doses of fish, porcine and two bovine collagen hydrolysates; free hydroxyproline uptake was comparable across sources and Pro-Hyp was the most abundant collagen peptide in blood. The 60-120 min peak is the authors' summary of earlier studies, which they call consistent with their curves (full text, PMC11325589).