Tips to increase fertility include maintaining an ideal weight, avoiding excess caffeine and alcohol intake, smoking cessation and taking advantage of the "fertile window," explains WebMD. In addition, HealthyWomen cites eliminating high amounts of trans fats, animal proteins and carbohydrates while making other dietary changes as helpful in increasing fertility.
According to WebMD, a Baylor research study indicated two-fold and four-fold increases in time to conception among women with body mass indices, or BMIs, above and below the optimal 18.5 to 24.9 range. Exceeding five cups of coffee and two alcoholic beverages daily is associated with lower fertility, explains William Gibbons of the Baylor College of Medicine. Gibbons added that smoking cigarettes affects the receptiveness of the uterus to the egg in women and reduces sperm production in men. The fertile window is the six-day period ending on the day of ovulation; pregnancy is most likely to occur within the three days before ovulation.
Replacing beef, pork and chicken with vegetable protein sources helps reduce infertility, while iron supplements and multivitamins containing folic acid and a single high-fat dairy serving each day are also beneficial, states HealthyWomen.