Low vitamin D linked to earlier menarche

Low vitamin D link to earlier first menstruation, a risk factor for health problems throughout life
A study links low vitamin D in young girls with early menstruation, which is a risk factor for a host of health problems for teen girls as well as women later in life.
Read article at medicalxpress.com

I remember many years ago reading that high sugar intake was associated with starting periods early, but no doubt there are many associated factors.