There are many online sources and several books that claim that switching to a more balanced and healthy diet can lead to improved fertility. Though it is always beneficial to eat a healthy diet, it should not replace other fertility treatments and options. However, maintaining a healthy diet and lifestyle may reduce a woman's risk of irregular ovulation and could improve her chances of getting pregnant. During the scientific study of fertility diets, the trials were focused on a specific condition found in infertile women: ovulatory dysfunction, or irregular ovulation. Women who have ovulatory dysfunction may benefit from adjustments to their diet if they want to try to get pregnant. For example, one study done by the Nurses’ Health Study tested over 18,000 women who were trying to get pregnant over an eight-year period. Only about 400 of these women were diagnosed with infertility related to irregular ovulation. Thus, the study linking nutrition and fertility was in fact only based on a very small number of women in the test group and may not be applicable to women who do not have irregular ovulation. Before you try a fertility diet, speak to your physician about other medical options to treat fertility issues or infertility. There are several certified medical procedures to help you get pregnant, as well as other options to help improve your chances of getting pregnant. You may be a good candidate for fertility drugs that will help regulate your ovulation. Your doctor may also suggest in vitro fertilization, intrauterine insemination, embryo testing, or reproductive immunology.

TL;DR in Vietnamese:
Bạn nên biết rằng sở hữu chế độ dinh dưỡng cân bằng, lành mạnh sẽ không bảo đảm về việc tăng cường khả năng thụ thai. Bạn nên nhớ rằng chế độ ăn uống giúp làm tăng khả năng sinh sản chỉ hiệu quả cho một số nhỏ phụ nữ. Tham khảo ý kiến bác sĩ về phương pháp điều trị.