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.
The answer is simple, even if not actually correct. Pregnancies are considered full term at 40 weeks, and many women count four weeks as a month while they are pregnant, making the result a ten month pregnancy. On average there are actually 4.33 weeks in a month, however that a third of a week tends to get lost in the pregnancy shuffle for much of us.