Lead-based paint
Paint or other surface coatings that, by definition, contain lead in excess of 1.0 milligrams per square centimeter (mg/cm2) 0.5 percent by weight. See also lead poisoning.
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- Leaky Gut or Leaky Gut Syndrome
Leaky gut or leaky gut syndrome is defined as a reduced barrier to the passage (leakage) of molecules from the intestine into the wall of the intestine and from there, possibly into the body. There is no question that in pathologic states molecules enter the wall of the intestine that normally are excluded. It is […]
- Lean body mass
The mass of the body minus the fat (storage lipid). There are a number of methods for determining the lean body mass. Some of these methods require specialized equipment such as underwater weighing (hydrostatic weighing), BOD POD (a computerized chamber), and DEXA (dual-energy X-ray absorptiometry). Other methods for determining the lean body mass are simple […]
- Learning disability
school or work, daily routines, family life, and sometimes even friendships and play. In some people, many overlapping learning disabilities may be apparent. Other people may have a single, isolated learning problem that has little impact on other areas of their lives. A learning disability is often called a learning problem.
- Lectin
A complex molecule that contains both protein and sugar. Lectins are made by both animals and plants and are able to bind to the outside of a cell and cause biochemical changes in it.
- Leech
Leech therapy. 2. (Archaic) A physician or surgeon (because they did so much leeching). 3. A person who behaves as a parasite.