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What is collagen powder and is it safe to use?
什么是胶原蛋白粉，使用安全吗？
Collagen is actually a naturally occurring protein that is in our body that plays a large role in the structure and framework of our tissues,
胶原蛋白实际上是我们体内天然存在的蛋白质，在我们组织的结构和框架中发挥着重要作用，
including things like our joints, our skin, of course bones and other connective tissues.
包括我们的关节、皮肤，当然还有骨头和其他结缔组织。
It's also really important for tissue repair and maintenance.
它对于组织修复和维护也非常重要。
Now collagen powder is thought to work by providing building blocks for the body to build more collagen as well as sending signals to the body to build more collagen.
现在，人们认为胶原蛋白粉的作用是为身体提供构建更多胶原蛋白的基石，并向身体释放信号以构建更多胶原蛋白。
Now when it comes to the skin, collagen is supposed to help with things like elasticity, improving wrinkles, improving skin moisture, wound healing, hair health and nail health.
针对皮肤，胶原蛋白有助于增强皮肤弹性、改善皱纹、改善皮肤水分、促进伤口愈合、保持头发健康和指甲健康。
Now in terms of the safety of collagen powder, the studies are still very limited in terms of its effectiveness and it's not really regulated by the FDA.
现在就胶原蛋白粉的安全性而言，其有效性方面的研究仍然非常有限，而且并没有真正受到食品药品监督管理局（FDA）的监管。
There is a small risk of GI issues like bloating, diarrhea, constipation.
出现胃肠道问题（如腹胀、腹泻、便秘）的风险很小。
And then there's also concern about the contamination of heavy metals, especially lead and mercury.
此外，人们还担心重金属污染，尤其是铅和汞。
And without strict oversight, there is really no guarantee of the consistency of the active ingredient.
而如果没有严格的监管，活性成分的一致性确实无法保证。
