Although there is no definitive evidence, some studies have identified certain associations between tea drinking and mental health. For instance, one study found that depressive symptoms were less common in older adults who drank tea consistently and frequently. Another study, using 5,001 participants, concluded that “Regular tea consumption was associated with lower risks of cognitive impairment and decline.”
Some researchers have focused on more specific cognitive benefits of drinking tea. One experiment, which involved just 100 participants, concluded that drinking black tea enhanced attention and alertness.