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

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 items along with related searches

• Vitamin D and fertility: a systematic review – May 2012

• Testosterone levels increased after vitamin D supplementation (342 from 320) – June 2015

• Feel sexier with vitamin D and-or sunshine

• Incidence of 22 health problems related to vitamin D have doubled in a decade

• 3X increase in UK children who are vitamin D deficient in just 5 years – Nov 2015

• Military and Vitamin D - many studies

• Reasons for Vitamin D deficiency 35+ reasons

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