Decreased sleep duration is associated with obesity, diabetes and cardiovascular disease
Controlled laboratory studies have shown that decreased quantity and quality of sleep negatively affects glucose regulation and alters food intake and energy balance.
The study conclusions:
Experimental sleep restriction alone or in combination with misalignment, and decreases in sleep quality negatively affect glucose regulation. Sleep curtailment alters energy expenditure, weight regulation, gene-expression, and inflammatory cytokine levels.
Below is a cool chart from the study. It’s amazing what a lack of sleep can effect.