Nudity is the state of being in which a human is without clothing. While estimates vary, for the first 90,000 years of pre-history, anatomically modern humans were naked, having lost their body hair, living in hospitable climates, and not having developed the crafts needed to make clothing.

As humans became behaviorally modern, body adornments such as jewelry, tattoos, body paint and scarification became part of non-verbal communications, indicating a person's social and individual characteristics. Indigenous peoples in warm climates used clothing for decorative, symbolic or ceremonial purposes but were often nude, having neither the need to protect the body from the elements nor any conception of nakedness being shameful. In many societies, both ancient and contemporary, children might be naked until the beginning of puberty and women often do not cover their breasts due to the association with nursing babies more than with sexuality.

In the ancient civilizations of the Mediterranean, from Mesopotamia to the Roman Empire, proper attire was required to maintain social standing. The majority might possess a single piece of cloth that was wrapped or tied to cover the lower body; slaves might be naked. However, through much of Western history until the modern era, people of any status were also unclothed by necessity or convenience when engaged in labor and athletics; or when bathing or swimming. Such functional nudity occurred in groups that were usually, but not always, segregated by sex. Although improper dress might be socially embarrassing, the association of nudity with sin regarding sexuality began with Abrahamic beliefs, spreading through Europe in the post-classical period. Traditional clothing in temperate regions worldwide also reflect concerns for maintaining social status and order, as well as by necessity due to the colder climate. However, societies such as Japan and Finland maintain traditions of communal nudity based upon the use of baths and saunas that provided alternatives to sexualization. (Full article...)