As if losing weight wasn't hard enough already, a study by UC Berkeley researchers suggests that just smelling food can make you gain weight. Or at least, smelling food may make mice gain weight.
In their study, researchers Andrew Dillin and Celine Riera observed three groups of mice with various senses of smell. A control group with a normal sense of smell, and then "super-smellers," and mice without a sense of smell.
The two researchers fed all the mice a high-fat diet and noticed a correlation between sense of smell and the amount of weight the mice gained. The "super-smellers" gained the most weight, while those with a normal sense of smell gained up to 100 percent body weight, and those that couldn't smell at all gained only 10 percent on average.