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Sexual frequency down 20 percent in 20 years (decreased vitamin D not mentioned) March 2017

Declines in Sexual Frequency among American Adults, 1989–2014

Archives of Sexual Behavior, pp 1–13
Jean M. TwengeEmail authorRyne A. ShermanBrooke E. Wells

Click here for full study online @ publisher (cannot be downloaded or printed)

Review of the study in New Y.ork Times

Possible reasons include:

1) Lower Vitamin D ==> poorer health, fatigue, pain ==> less interest in sex, exercise, etc
2) Lower Vitamin D ==> Reduced Testosterone ==> less interest in sex

This study only looked at American Adults, but suspect decreased sex around the world

See also VitaminDWiki

Fertility and Sperm category listing has 142 items along with related searches
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Sexual frequency down 20 percent in 20 years (decreased vitamin D not mentioned) March 2017

9556 visitors, last modified 08 Mar, 2017,

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- Women had better sexual desire, orgasm and satisfaction after Vitamin D supplementation – Feb 2018 Testosterone 14% higher in those with high vitamin D – Aug 2016

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