Jammu, April 26 -- While conceiving a child can be challenging for many, a new focus on nutritional health may hold answers. Research increasingly shows certain vitamin deficiencies can undermine fertility for both men and women.

One key deficiency linked to female fertility issues is vitamin D. Studies find inadequate vitamin D levels may disrupt the menstrual cycle and impair ovarian function. This nutrient is also tied to polycystic ovary syndrome (PCOS), a condition affecting millions of women worldwide. For men, low vitamin D has been associated with decreased sperm quality and testosterone levels.

Other important dietary factors involve B vitamins. Vitamin B12 deficiency, for example, has been tied to irregular periods and problem...