What Is Histamine? Histamine is an important part of your bodyâs immune response, but high levels of the chemical compound can cause health problems. Histamine is a chemical produced in cells throughout the body as part of the bodyâs inflammatory response to allergy, infection, or injury. When damaged or exposed to allergens, cells in the skin, nose, throat and lungs release histamine, resulting in pain, itchiness, redness, runny nose, and wheezing.
WASHINGTON Mom-to-be closing in on her due date? The nation's obstetricians are getting more precise about exactly how close makes for a full-term pregnancy. On average, a pregnancy lasts 40 weeks, counting from the first day of the woman's last menstrual period. That's how a due date is estimated. A baby is considered preterm if he or she is born before 37 weeks of pregnancy. Until now, a term baby was defined as one born anytime from 37 weeks to 42 weeks, a few weeks before or after the calculated due date.
Full-term Birth. This term simply means that your baby was born somewhere between 38-40 weeks of the gestational period. This is the range of the most healthy and uncomplicated birth experiences. If you deliver before 38 weeks or after 40 weeks, extra risks are involved. Late Preterm Birth.