Lifestyle changes are often helpful in increasing chances for conception. Smoking, caffeine and alcohol consumption, and excessive or insufficient body weight, and stress have all been related to reduced fertility in women. Reproductive organs are highly susceptible to free radical or oxidative damage from environmental toxicants and natural aging. A balanced, nutritional diet, and nutritional supplements with a high antioxidant content (e.g. vitamin E and selenium) can help reverse some of this damage. Green tea has been shown to be a potent antioxidant, and tea drinking has been associated with increased chances of conception, as opposed to other caffeinated beverages that have a negative effect on fertility.
Vitex agnus-castus is the major herb used for improving hormone balance. Vitex increases LH production and mildly inhibits the release of FSH. The result is a shift in the ratio of estrogen to progesterone, favoring corpus luteum production. Several clinical studies in Europe used Vitex successfully to restore progesterone balance, and induce fertility (39 of 45 women increased progesterone levels and 7 became pregnant within 3 months; see references).
Vitamin B6 (pyridoxine) has been shown to improve conception rates, as well as treat PMS symptoms, but whether due to a primary insufficiency is unclear. Folic acid, vitamin B12, iron, magnesium, zinc and selenium deficiencies have been known to cause fertility issues that are easily reversible with supplementation. L-arginine, an amino acid, helps improve circulation to the reproductive organs to enhance their receptivity to egg implantation.