Is ingestible collagen the fountain of youth? Maybe | CNN

While the evidence on collagen is far from conclusive, most clinicians agree there’s little downside in trying it if you wish – as long as you keep expectations in check and a few things in mind.分類：beauty and personal care, business and industry sectors, business, economy and trade, consumer products, cosmetics and toiletries, dermatology, diet and nutrition, diet, nutrition and fitness, dietitians and nutritionists, health and medical, health care, health care professionals, medical fields and specialties, nutrition, weight loss diets...