The study recruited 19 women without obesity to a parallel-arm, double-masked diet intervention with three phases:
- A 3.5 day in-patient pre-intervention where participants were provided a low-sugar baseline diet.
- A 12 day outpatient intervention where participants were instructed to consume one serving of either an artificially sweetened provided beverage or a sugar sweetened provided beverages (and they of course weren't told which they were provided with) with each meal while not consuming any additional sweetened beverages
- A 3.5 day in-patient intervention where participants were provided with identical diets except for their assigned beverage differences
What'd the researchers find?
In what will come as no surprise to anyone who's ever comforted themselves with sugary foods, the sugar drinking subjects were less stressed in that the consumption of beverages with sugar, but not with aspartame, decreased stress-induced cortisol production and led to greater hippocampus activation (an area of the brain inhibited during stress).
Now this was a small study, and limited just to sugar, but I'd bet that were this repeated, this time with a combination of sugar and fat (like the combo you'd find in Chunky Monkey for instance), you'd see an even greater response.
Food's definitely not just fuel.