Large follicles during ovulation are a very common phenomenon, especially in women. During ovulation, a woman's ovaries begin to mature and prepare to produce eggs. At this time, the egg enters the uterus through the fallopian tube, ready to combine with sperm to form a fertilized egg.

First of all, physical health is the foundation. If a woman has a medical condition, such as chronic illness, poor nutrition, or an immune system problem, it may cause her to find that her follicles are very large during ovulation.

Secondly, drug use may also cause large follicles during ovulation. Some drugs, such as hormonal drugs, can affect women's reproductive function, causing the ovaries to be overstimulated and produce larger follicles.

In addition, lifestyle can also affect women's reproductive health, such as lack of exercise, poor eating habits or long-term smoking. These lifestyle issues may lead to reduced fertility in women, resulting in large follicles during ovulation.

Overall, having large follicles during ovulation does not necessarily mean that a woman is unhealthy, nor does it necessarily mean that they are infertile. If a woman finds that her follicles are very large during ovulation, it is recommended to seek medical treatment promptly and receive professional examination and treatment.

Finally, it is important to note that although it is common for follicles to be large during ovulation, it may also be a symptom of a certain disease. Therefore, if women feel unwell, they should seek medical treatment promptly and receive professional diagnosis and treatment.