dental hygiene school operating expenses

The benefits of body hygiene can be diminished by the risks of excessive body hygiene, which is hypothesized to cause allergic disease and bodily irritation.
[edit] Excessive body hygiene and allergies

Some people think that excessive body hygiene can cause allergies. However this is a hypothesis and it is not a proven theory. The hygiene hypothesis states that a marked lack of early childhood exposure to infectious agents, and later a lack of exposure to helminths as adults, increases susceptibility to allergic diseases.[2]. It is postulated that the lack of exposure to these agents prevents the body from developing appropriate allergens and auto-immune responses.
[edit] Excessive body hygiene of external ear canals
See also: Earwax#Cotton_swabs

Excessive body hygiene of the ear canals can result in infection or irritation. The ear canals require less body hygiene care than other parts of the body, because they are sensitive, and the body system adequately cares for these parts.[citation needed] Attempts to clean the ear canals through the removal of earwax can actually reduce ear canal cleanliness by pushing debris and other foreign material into the ear that would otherwise have been removed by the natural movement of ear wax from the interior to exterior of the ear.