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Body modification (or body alteration) is the deliberate altering of the human anatomy or human physical appearance.〔 〕 It is often done for aesthetics, sexual enhancement, rites of passage, religious beliefs, to display group membership or affiliation, to create body art, for shock value, and as self-expression, among other reasons.〔 In its broadest definition it includes plastic surgery, socially acceptable decoration (''e.g.'', common ear piercing in many societies), and religious rites of passage (e.g., circumcision in a number of cultures), as well as the modern primitive movement. ==Explicit ornaments== *Body piercing - permanent placement of jewelry through an artificial fistula; sometimes further modified by stretching *Ear piercing - the most common type of body modification *Pearling - also known as genital beading *Neck ring- multiple neck rings or spiral are worn to stretch the neck (in reality lowering of the shoulders) *Scrotal implants〔(【引用サイトリンク】title=Scrotal Implant )〕 *Tattooing - injection of a pigment under the skin *Eyeball tattooing - injection of a pigment into the sclera *Extraocular implant (eyeball jewelry) - the implantation of jewelry in the outer layer of the eye *Surface piercing - a piercing where the entrance and exit holes are pierced through the same flat area of skin *Microdermal implants〔(【引用サイトリンク】title=Microdermal )〕〔(【引用サイトリンク】title=Dermal Anchoring )〕 *Transdermal implant - implantation of an object below the dermis, but which exits the skin at one or more points 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「body modification」の詳細全文を読む スポンサード リンク
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