Everyone in the skin (care) world is talking about sirtuins. What are they? Sirtuins are a family of proteins found in organisms (ranging) from bacteria and plants to humans. You may have heard of studies that show animals on calorie-restricted diets live (longer), are healthier and show (fewer) signs of age than those fed normal diets. Though we don't fully understand why, it appears that sirtuins are the( key). A growing body of research shows that sirtuins may slow the pace of aging by (delaying) cell death and protecting cells from DNA damage.

相关阅读：

医学英语口语课程

医学英语水平免费测试