Answers to Medicine Questions

What are ultra-processed foods, and what are they doing to us?

If they ate the same things, would their gut bugs be the same?

The trillions of organisms in the human body - how do they get there?

Lemon and lime juice - if it gets on your skin - can cause a nasty rash in the sun. Why?

Brain and bodyweight expert Giles Yeo says 'calories don't count'. Why?

How does full sugar compare to artificial sweeteners?

How can you make a normal TV look 3D?

What were the health impacts of the vastly different diets and lifestyles of aristocrats and peasants?

How would being in space affect the development of a foetus?

Paola asks: would 'woven' blood vessels be able to perform diffusion properly?

Seeking science to sort a shivery snag

Why do females produce eggs inside the body, but males have to produce sperm outside the body?

Listener Luke sent us a concern he's been hearing about the vaccine, so Chris Smith weighed in...

Do bugs have the same "fight or flight" biology as us humans?

Listener David asks how to measure time during space travel - and how the body clock gets affected...

We can't hold in an answer any longer...

Which does the brain deal with quickest?

Why is the number needed so high?

Listener Alice has already been infected with the coronavirus. What happens if she is exposed to it again?

Do we all have the same number of nerve endings, regardless of body size?

Do we really need an appendix?

Everyone has gut bacteria that keep them healthy. How do babies get them if they're born by caesarian section?