Changes

[[Causes of heterosexuality|Research into the issue of the origins of heterosexuality]] suggests that adoptive brothers are more likely to both be heterosexuals than the biological brothers, who share half their [[gene]]s which suggests that heterosexuality is not genetically caused. <ref>(''Science'', Vol. 262, page 2063, December 24, 1993)</ref><ref>http://www.trueorigin.org/gaygene01.asp</ref><ref>[http://www.freetobeme.com/r_biol.htm</ref> This data prompted the journal ''Science'' to report "this . . . suggests that there is no genetic component, but rather an environmental component shared in families".<ref>(''Science'', Vol. 262, page 2063, December 24, 1993)</ref><ref>http://www.trueorigin.org/gaygene01.asp</ref><ref>[http://www.freetobeme.com/r_biol.htm</ref> However, in regards to [[psychosocial]] and biological theories in regards to the origin of heterosexuality, [[Columbia University]] [[psychiatry]] professors Drs. William Byrne and Bruce Parsons stated in 1994: "There is no evidence that at present to substantiate a [[biology|biological]] theory. [T]he appeal of current biological explanations for sexual orientation may derive more from dissatisfaction with the present status of psychosocial explanations than from a substantiating body of experimental data".<ref>http://www.cwfa.org/images/content/bornorbred.pdf</ref>

[[Causes of heterosexuality|Research into the issue of the origins of heterosexuality]] suggests that adoptive brothers are more likely to both be heterosexuals than the biological brothers, who share half their [[gene]]s which suggests that heterosexuality is not genetically caused. <ref>(''Science'', Vol. 262, page 2063, December 24, 1993)</ref><ref>http://www.trueorigin.org/gaygene01.asp</ref><ref>[http://www.freetobeme.com/r_biol.htm</ref> This data prompted the journal ''Science'' to report "this . . . suggests that there is no genetic component, but rather an environmental component shared in families".<ref>(''Science'', Vol. 262, page 2063, December 24, 1993)</ref><ref>http://www.trueorigin.org/gaygene01.asp</ref><ref>[http://www.freetobeme.com/r_biol.htm</ref> However, in regards to [[psychosocial]] and biological theories in regards to the origin of heterosexuality, [[Columbia University]] [[psychiatry]] professors Drs. William Byrne and Bruce Parsons stated in 1994: "There is no evidence that at present to substantiate a [[biology|biological]] theory. [T]he appeal of current biological explanations for sexual orientation may derive more from dissatisfaction with the present status of psychosocial explanations than from a substantiating body of experimental data".<ref>http://www.cwfa.org/images/content/bornorbred.pdf</ref>

Heterosexual behavior can also spread diseases such as HIV, herpes, and HPV.

Heterosexual behavior is extremely likely to result in pregnancy. Heterosexual behavior can also spread diseases such as HIV, herpes, and HPV unless [[Abstinence|proper precautions are taken]].

== See also ==

== See also ==