More than half of Australians are exceeding the WHO guidelines of limiting added sugar. What effect is sugar really having on our nation's health and economy? Sandro intros the facts from a bath of coke.

We are living longer than ever before. But with that longevity are we living better lives than our predecessors? With obesity and mental health problems on the rise, how can we make our longer lives younger lives?

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!

Caroline learns easy ways to combat dangerous sedentary habits, Shalin tries strength training without going to the gym, and Sandro gets sweaty for science.

In part one of a two-part special, Caroline convinces volunteers to road-test four popular diets: Keto, Paleo, 5/2 and Flexitarian, Sandro examines which milks are healthiest, Shalin investigates if going gluten-free is safe.

In part-two, Caroline's diet experiment reveals spectacular weight-loss, along with worrying health implications. Shalin lifts the lid on fats and oils and Sandro navigates Australia's confusing food labelling system.

Being lonely is the silent health crisis deadlier than obesity. The doctors explore why and give advice on how to make new friendships that last.

The doctors reveal which complimentary therapies actually work, when to get screened for cancer and how to create nutritious lunchboxes.

Shalin risks his life eating street food in a superbug hotspot, and Caroline examines one of the greatest threats to mankind - antibiotic resistance.

Heart disease is the number one killer world-wide. The team expose the hidden danger lurking in processed foods, demonstrate life-saving CPR, and reveal a surprising rehabilitation program for heart attack survivors.