This is no joke – scientists at Tokyo University have developed a pair of glasses that they say help you lose weight.

Wear these specs, and you will see doughnuts – maybe even a plate of sushi – appear larger, tricking your stomach into thinking it’s full. Or so they say… Take a look at this video (or check out the still below from Reuters) and see what you think; would you really be fooled? Why did it take a team of Tokyo scientists to come up with the idea?

Diet Goggles

If you prefer the look of the glasses in the top picture, check out Tokyo based Effector  – this is their collaboration with cult label Diet Butcher Slim Skin. Not sure if the name is based on any weight-loss promises though!