“The large size of this study allowed us to consider a variety of potential correlates of a healthy lifestyle that might explain our findings, however, adjusting for these factors made almost no difference in our estimates,â added Dr Purdue-Smith.
Calcium and vitamin d deficiencies have previously been implicated in polycystic ovary syndrome, endometriosis, and premenstrual syndrome so may boost fertility overall.
The researchers said the outcome was important because women are increasingly delaying motherhood into their late 30s and early 40s.
âFertility declines dramatically during the 10 years leading up to menopause, so early menopause can have profound psychological and financial implications for couples who are unable to conceive as they wish,â the authors concluded.
âAs such, it is important to identify modifiable risk factors for early menopause, such as diet.
The research was published in the American Journal of Clinical Nutrition.