|Airdate||July 23, 1999|
Body Chemistry launched in BrainPOP Health/Science July 23, 1999.
- At the end, the sign "Tim is a Koo-Koo Head" is shown.
- However in 2017, the ending was edited. After Tim says The End, it just fades to black rather than showing the "Tim is a Koo-Koo Head" sign ending probably because it's just too mean.
Community content is available under CC-BY-SA unless otherwise noted.