There is no such thing as “six harmful effects of collagen peptides”, but healthy people routinely do not need to take collagen peptide supplements. Collagen peptide is the product of partial hydrolysis of collagen, which can also be understood as small molecules of collagen. First of all, it must be clear that collagen peptides or collagen is not a good protein, not a high quality protein, because it does not contain the full range of essential amino acids in the right proportions. It does not meet the requirements of quality protein needed by the human body. Secondly, oral collagen peptides cannot replenish collagen. Even if it is broken down into peptides, it will be further broken down by digestive enzymes in the intestines to become amino acids or small molecule peptides, after which it enters the bloodstream for free assembly. These small molecule peptides or amino acids may become part of myoglobin, myosin, albumin, globulin, etc., and participate in the operation of the whole body. Therefore, the protein eaten will eventually become which kind of protein, this is not the will of the person, but by the countless mechanisms of complex manipulation. So eat collagen peptide, can not replenish collagen. There is no need for healthy people to purposely buy collagen peptides, if you need to supplement for some special reasons, please consult a clinician.