The team uncovers alarming evidence that drinking alcohol can lead to cancer. But can the damage be reversed? Shalin quits booze for a month with surprising results, and Sandro road-tests confronting warning labels.

Sandro submits to a humiliating stress test, Caroline discovers how school students can manage their moods, and Shalin explores the science of 'comfort food'.

Shalin reveals the ground-breaking therapy creating cancer fighting super cells. Plus, arch-rivals 'team virus' and 'team immune' battle it out on the sports field - all in the name of science!