Photos of food are now everywhere, thanks in part to the rise of wacky food trends and Instagram.
But if your Instagram feed is filled with food photography, you might unknowingly be experiencing "visual hunger", a sensation that can have some of the same effects on the body as actual hunger: increased heart rate in anticipation of eating, salivating, and other neural activity across a network of brain areas.
A recent study published in the scientific journal "Brain and Cognition" argued that this form of "digital grazing" could have an indirect link to obesity, saying that "humankind is not doing such a great job in terms of optimising the contemporary food landscape."
Photographer Martin Parr has been observing that landscape for over 25 years, taking photos of the food he's found aesthetically amusing from around the world. His new book, "Real Food", features photos of more than 200 dishes from 36 different countries.
Instead of feeding what he calls the food "propaganda" machine, Parr's images of popular foods are a bit less flattering, but all the more revealing.
'You can tell a lot about society, who we are and what we like doing, by looking at the food we eat,' Parr told Bloomberg Pursuits in a recent interview.
Source: Bloomberg Pursuits
The obesity crisis has often been blamed on addictive foods packed with sugar, salt, and fat.
Today, with ample access to food images -- from Instagram to cooking shows -- our hunger is triggered more often than necessary.
The study in 'Brain and Cognition' found that many people are more likely to want to eat the often unhealthy foods they see on TV, in ads, or in photography like they see on Instagram.
Source: Brain and Cognition