Can a candy help you sleep better and feel less stressed?

This study tested a special candy containing tea theanine, casein hydrolysate, and saffron extract in 171 Chinese adults aged 20-55 with mild sleep problems. Participants took the candy or a placebo for 28 days, and researchers measured changes in sleep quality, stress, mood, and skin condition. The goal was to see if the candy could improve these areas without medication.