From Instagram to TV ads, what’s the science behind food porn?

What does the bombardment of food imagery do to our brains and bodies? The ‘gastrophysicist’ who has worked with Heston Blumenthal explains all in an extract from his new bookYour brain is your body’s most blood-thirsty organ, using around 25% of total blood flow (or energy) – despite the fact that it accounts for only 2% of body mass. Given that our brains have evolved to find food, it should perhaps come as little surprise to discover that some of the largest increases