Once you know what foods are good for you—and for your fertility—you also need to know how to balance them properly in your diet. The way you eat can help fight insulin-resistance, which can compromise fertility by upsetting ovulation cycles and even increasing the risk of miscarriage. This condition especially affects fertility in women who are overweight or who have polycystic ovary syndrome (PCOS). To reduce the risk of developing insulin-resistance, try to balance your meals and snacks by including one-third of the calories from protein, one-third from complex carbohydrates, and one-third from healthy fats. For protein, use lean sources such as salmon, turkey, or low-fat yogurt. Add complex carbohydrates such as whole-grain products, beans, or green vegetables. Avoid simple carbohydrates, such as white bread, because they trigger insulin response. Then include some monounsaturated or polyunsaturated fats, such as nuts, olive oil, or avocados.