Low levels can produce sexual dysfunction, fatigue, depression, muscle atrophy and osteoporosis.

At a time when the sheer scale of city life produces fatigue, Beaufort's small size is a relief.

The syndrome produces unexplained fatigue that lasts at least six months, and even years.

Substance abuse: Alcohol, marijuana, and many other drugs can produce fatigue as a side effect.

It also produces fatigue in the morpher, but this, too, can be lessened with practice.

This continues involuntarily and produces fatigue, but in so doing it also affords recreation (the effects of a motion conducive to health).

Nothing like a little terror to produce instant fatigue.

There may be a perception that there's less blood flow, which can produce fatigue or dizziness.

It is a well-known fact that your emotional attitude usually has far more to do with producing fatigue than has physical exertion.

A pent-up stress reaction produces fatigue, tension and, eventually, chronic health problems like heart disease.