The number of IVF cycles a patient can safely undergo before health risks become significant can vary depending on individual circumstances and medical guidelines. Generally, it is recommended that patients undergo no more than 3 to 6 IVF cycles.

Factors that determine the limits on repeated IVF treatments include:

1. Age of the patient: Older patients may have a lower chance of success with each cycle and may be advised to limit the number of cycles.
2. Ovarian reserve: The quantity and quality of a woman’s remaining eggs can impact the success rates of IVF cycles. Diminished ovarian reserve may limit the number of cycles a patient can undergo.
3. Overall health: Patients with underlying health conditions may have limitations on the number of IVF cycles they can safely undergo.
4. Financial constraints: The cost of multiple IVF cycles can be a limiting factor for some patients.
5. Emotional and psychological well-being: The emotional toll of repeated IVF failures can also be a factor in deciding how many cycles to undergo.

It is important for patients to discuss their individual situation with their healthcare provider to determine the most appropriate course of action.