Certainly, throughout history, there have been topics that were considered taboo and then became common or acceptable in society. Here are five examples:

1. **Sexuality and Sexual Orientation**: In many societies, openly discussing sexuality or issues related to sexual orientation used to be a huge taboo. However, over time, there has been a movement towards accepting sexual diversity and open discussion of these topics.

2. **Mental Health**: Until recently, talking about mental health issues was often avoided due to the stigma associated with these issues. However, with increased awareness and education about mental health, many societies are becoming more open to discussion and support for those suffering from mental illness.

3. **Tattoos and Piercings**: In many cultures, tattoos and piercings were considered taboo and associated with rebellious or marginalized behavior. However, as these forms of body expression have become more common and acceptable, the stigma surrounding them has diminished significantly.

4. **Therapy and Counseling**: Seeking therapy or counseling used to be seen as a sign of weakness or shame in many societies. However, as mental health has received more attention and understanding, therapy has become more acceptable and even encouraged as a valid way to care for emotional well-being.

5. **Death and Grief**: Talking about death and grief has often been avoided or considered taboo in many cultures. However, movements such as the “well-lived death movement” and awareness of palliative care have helped bring these topics into the public conversation in a more open and compassionate way.