Malabsorption
Impaired absorption of nutrients in the gastrointestinal tract most often a result of drug side effects or a health condition or disease.
 

Menorrhagia
Excessive loss of blood during menstrual periods.  May be due to abnormal blood clotting, disruption of normal hormonal regulation of periods or disorders of the endometrial lining of the womb.
 

Metabolism
A collective term for all chemical processes that take place in the body.  These changes produce energy and basic materials needed for processes of life.
 

Montmorillonite
Lake mineral clays used in nutrition as a source of trace minerals.  Montmorillonite is named after a town of Montmorillon in France
 

Mucilage, Mucilant
Complex sugar molecules that are a soft, slippery gelatinous substance that protect mucous membranes and inflamed tissues.
 

Mucus
The slick, slimy fluid made up of water, mucin (a glycoprotein), salts, and some cells secreted by the mucous membranes.  Mucus acts as a lubricant and mechanical protector of the mucous membranes.
 

Myelin Sheath
A white fatty substance (produced by Schwann cells) that surrounds axons of nerve cells to provide electrical insulation in nerve impulse transmission.