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Dental Sealants What are dental sealants? Dental sealants are thin, plastic coatings that bond to the chewing surfaces of the back teeth (molars and premolars). Sealants help prevent tooth decay (cavities). They work very well on the back teeth. These teeth contain more hard-to

Skin Pigment Disorders What are skin pigment disorders? Skin color is determined by a pigment (melanin) made by specialized cells in the skin (melanocytes). The amount and type of melanin determines a person's skin color. What is the function of melanin? Melanin's role is to

Overview of Sleep Disorders Facts about sleep disorders Loss of sleep can cause problems at home or on the job. It can lead to serious or even fatal accidents. The National Sleep Foundation notes that: Between 50 and 70 million U.S. adults have some type of sleep or wakefulness

Anatomy of a Newborn Baby's Skull The skull may seem to be one large bone, but it's made of several major bones that are connected together. The major bones that compose the skull include: 2 frontal bones 2 parietal bones 1 occipital bone These bony plates cover the brain, and

Pollen and Children What is pollen? Each grain of pollen is tiny (microscopic). When there is a lot of pollen together, it becomes a fine yellow powder. It's made of the male reproductive cells of flowering plants, trees, grasses, and weeds. It's the most common cause of hay

Risks of Pregnancy Over Age 30 Many women wait until later in life to have children. In the U.S., birth rates for women in their 30s are at the highest levels in four decades. But an older mother may be at increased risk for things such as: Miscarriage Birth defects Twins High

Substance Use Disorder or Dependence What is substance use disorder or dependence? Substance use disorder (SUD) Substance use disorder (SUD) is a recognized health condition. It refers to the use of illegal or legal substances in a harmful way. Alcohol is the most commonly used

Addison Disease in Children What is Addison disease in a child? Addison disease, also called primary adrenal insufficiency, is a rare autoimmune endocrine disorder that occurs when the adrenal glands don't make enough of the "stress" hormone called cortisol. Cortisol controls

Inguinal Hernia What is an inguinal hernia? An inguinal hernia occurs when part of your intestine pushes through a weak spot in your lower belly (abdominal) wall. This area is called the groin. The hernia creates a lump in your groin. Over time, the hernia may get bigger. Most

Alcohol-Induced Liver Disease What is alcohol-induced liver disease? Alcohol-induced liver disease is common. But it can be prevented. There are three types. Many heavy drinkers progress through these three types over time: Fatty liver. Fatty liver is the build-up of fat inside