Migraines belong to the classification of vascular headaches.  These bring on severe, throbbing pain that is usually one-sided but may occur on both sides.  Often, this is accompanied by nausea and vomiting.  Sometimes, there are “auras” or warning signs such as blurred vision, spots before the eyes, or numbness in the extremities.  Usually a migraine headache begins in the morning and may last from one to three days....

It is estimated that 50% of women complain of nausea and vomiting, or “morning sickness,” during the first three months of their pregnancy.  Morning sickness usually occurs immediately or soon after awakening, although it can occur at any time during the day....

Multiple sclerosis is a progressive, degenerative disorder of the central nervous system.  The disease is variable in its progression and affects various parts of the nervous system by destroying the myelin sheaths that cover the nerves, causing an inflammatory response.  MS usually occurs in persons between the ages of 20 and 40.  Women are affected slightly more often than males.  The highest rates of MS are all located in the higher latitudes of both the northern and southern hemispheres....

The simplest definition of obesity is an excessive amount of body fat.  Obesity is classically defined as a body fat percentage greater than 30 per cent for women and 25 per cent for men. Precise estimations of an individual’s body fat percentage can be determined using a skin caliper or electrode analysis....

Osteoporosis literally means porous bones.  Although the entire skeleton may be involved, bone loss usually occurs mostly in the spine, hips, and ribs.  Since these bones bear a great deal of weight, they become susceptible to pain, deformity, or fracture....