| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| This hormone first isolated in 1958 plays an important role in regulating sleep | melatonin | $1,600 | DJ | THE HUMAN BODY | 2022-02-15 | #8577 | |
| Scientists identified the MT1 receptor as the part of the brain where this hormone helps you fall asleep | melatonin | $2,000 | DJ | THE HUMAN BODY | 2019-02-04 | #7921 | |
| Produced mainly at night & causing drowsiness, it was the first hormone to be isolated from the pineal gland | melatonin | $1,000 | J | THE BODY HUMAN | 2006-01-05 | #4909 |