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Allergens: Dust and Dust Mites What are dust allergens? Dust allergens are substances found in dust. They may include: Fabric fibers Lint Feathers Stuffing materials Animal protein (dander, saliva, urine, and body oils) Bacteria Mold and fungus spores Food particles Plants

Breast Infections and Inflammations What is lactational mastitis? The most common type of breast infection is lactational mastitis. This happens when a person is breastfeeding. The nipples become cracked and sore. This allows bacteria from the baby's mouth to enter the ducts and

Anatomy of the Prostate Gland Facts about the prostate gland The prostate gland is about the size of a walnut. It's located just below the bladder, and it surrounds the urethra. This is a tube that carries urine and semen out of the body. The prostate is partly muscular and

Anatomy of the Breasts Each breast has 15 to 20 sections, called lobes. They are arranged like the petals of a daisy. Each lobe has many smaller structures called lobules. These end in dozens of tiny bulbs that can make milk. The lobes, lobules, and bulbs are all linked by thin

Mold What is mold? Mold is a member of the fungus family. It's rarely killed by heat or cold exposure. Mold stays inactive (dormant) until a certain season, such as spring or fall, or when favorable environmental conditions appear. Then it grows and thrives. Where does mold grow

Calculating a Due Date A typical pregnancy lasts, on average, 280 days, or 40 weeks—starting with the first day of the last normal menstrual period as day 1. An estimated due date can be calculated by following steps 1 through 3: First, determine the first day of your last

Hormones During Pregnancy What is the role of hormones during pregnancy? Many hormone levels are affected in the body during pregnancy. Several hormones play major roles during pregnancy. These are: Human chorionic gonadotropin hormone (hCG). This hormone is made only during

Physical Therapist What is a physical therapist? Physical therapy focuses on the evaluation, management, and prevention of disorders of human motion. Physical therapists (PTs) are important members of the rehab (rehabilitation) team. They evaluate and provide treatment for people

Topic Index - Pregnancy and Childbirth Pregnancy & Childbirth Home Planning a Pregnancy Signs of Pregnancy / The Pregnancy Test Calculating a Due Date Prenatal Medical Care Pregnancy Pregnancy Overview Anatomy: Fetus in Utero The First Trimester (0 - 12 Weeks) The Second

Sleeping Positions During Pregnancy As your pregnancy progresses and your uterus gets bigger, you may find it harder to get comfortable in bed. Early on in pregnancy, you can sleep on your stomach. Over time, that position can become uncomfortable. But it's OK to sleep on your