She said that since the end of World War 2, our diets have gradually become more reliant on processed foods and that was having an impact on our long term health.
Hannah added: “Previously the biggest killers were infectious diseases like typhoid, cholera and all these diseases we had in the past before vaccines and sanitisation.
“Now the biggest killers are these non-communicable, things like diabetes, cardiovascular disease and autoimmune conditions.
“These are very much conditions linked with what our diet and lifestyle is like.
