Why is the contraceptive pill is more reliable than the rhythm method?

The contraceptive pill is more reliable than the rhythm method because it provides a consistent hormonal regulation of the menstrual cycle, reducing the chance of ovulation and making unintended pregnancies less likely. In contrast, the rhythm method relies on tracking ovulation based on previous cycles, which can be unpredictable and varies significantly between individuals. Additionally, the effectiveness of the rhythm method can be compromised by irregular cycles, stress, illness, or other factors, while the pill offers a higher degree of control and reliability when used correctly.