Study shows daily glass of 100% fruit juice could help lower depression scores. However, participants who included fruit juice or smoothies in their diet reported a reduction in depression scores. The group that consumed fruit juice or smoothies alongside whole fruits and vegetables recorded lower depression scores than the control group. “Our study shows that drinking a daily glass of fruit juice or a smoothie could be part of the solution and help people reach 5-a-day fruit and vegetable targets.” He added that the finding of lower depression scores among fruit juice consumers was “promising” and warranted further research, particularly among people experiencing poor mental wellbeing.