Study suggests L-theanine–caffeine combo improves focus after sleep loss

Study suggests L-theanine–caffeine combo improves focus after sleep loss

A recent study published in the British Journal of Nutrition provides evidence that a high-dose combination of L-theanine and caffeine can improve attention and reaction time in people who are acutely sleep-deprived. The researchers found that participants who took this combination were better at identifying potential road traffic accidents in a computerized task and responded more quickly than when given a placebo. Brainwave data also indicated…