Perhaps women have lower levels of Vitamin D because vitamin D hides in fat

Oops - conflict about which sex has lower vitamin D level: women or men

Body fat percentage Wikipedia

Click on chart for details

See also VitaminDWiki

• Half of the women who are fat do not have a high BMI – March 2012 has the following

  Women who were actually fat (40% to 50% fat), but had low BMI are the red dots in the pink region

Senior Korean women have much less vitamin D than men (possible reasons) Jan 2014}Higher % of Senior Korean women are deficient than men

2.3X more likely to have < 18 ng: 2008 Study

See also web

• Learn why women carry more fat than men Excerpt from a 2003 book

• Canada 2009 has rthe following chart