<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello. My 16 week old baby girl has had a few short black hairs in her stools occasionally. The stools are also a bit mucousy, and sometimes a little bit frothy. She passes wind fine. She passes stools usually about once a day on average. She is fully breastfed. Where are the hairs coming from?? I saw something online that they could be amino acid chains?!? Also, my husband has a hairy chest with very dark hairs. Could it be coming from there, and if so, could it harm her? Thankyou.  <response>: Thanks for asking. I would like to know if you have started weaning him yet?? Because any fibrous fruit specially bananas can cause mucousstringy black hair like material. The second possibility is they are coming from your husbands chest. If they are coming often that would worry me. Because hair can organize in a ball which can obstruct the gut. Observe for fallen hair near the baby and be vigilant in removing them. I would also advise your husband to shave his chest more often If they came once and twice thats fine.Its just to reassure you thats not something dangerous. Good luck 