It can, especially if we are talking about healthy people, suffering from anxiety and depression. According to a recent small study, only 10 days of drinking rosemary tea significantly increases the level of the most reliable depression indicator, BDNF (Brain-Derived Neurotrophic Factor).
To prepare rosemary tea, all you need is 5 g of dried rosemary and 100 mL of boiled water. Take it once a day for 10 days and you may feel yourself better and calmer.
Curious? HERE is the source