The new pap guidelines recommend the following key changes: 1. The first pap smear should be at age 21 instead of younger teenagers, as pap smears before this age often led to unnecessary treatment. 2. For women in their 20s with normal immune systems and no previous abnormal pap results, pap smears can now be done every 2 years instead of annually. 3. For women in their 30s meeting the same criteria, pap smears can now be done every 3 years instead of annually. The guidelines were updated based on new technologies for examining cervical cells and a better understanding of HPV and its latency period. The aim is to reduce overtreatment while still effectively screening for cervical cancer.