Rosemary essential oil has a number of health benefits and it is included in numerous health preparations. It has the ability to reduce cholesterol levels and it is very effective in treating respiratory problems, allergies and colds. Moreover, it is able to boost brain activity and improve memory by 75%. American scientists claim that sniffing rosemary can improve the ability to remember past events and the ability to memorize future tasks. They conveyed series of studies and found that people who sniffed rosemary oil experienced greater memory abilities by 60-75% in comparison to who did not.
Furthermore, a team of physiologists from University of Northumbria divided the participants in two groups and they were asked to wait in two separate rooms. One of the rooms was scented with rosemary oil. Then, the participants underwent series of memory tests. The results showed that those who waited in the scented room had considerably greater memory ability in comparison to those who waited in the other room.