What are chemicals produced naturally by the brain to carry messages through our the body

Health records that arent available between hospitals and medical offices are considered lacking? communication, contayct, correspondence, interoperabilit

When a freind is not tellig you everything you should a: bug them till they tell you b: ask them polietly to tell you c; stay silent your whole life d leave them they will tell you on there own time

Minor illnesses: a.) decrease the risk of sids b.) increase the risk of sids c.) increase the risk of hospitalization d.) decrease the risk of allergies e.) increase the risk of allergies