Aromatherapy is a scientific process where natural oils gotten from plants i.e. leaves, bark, flowers, roots, stems, etc… are used to enhance the psychological and physical well-being of human beings. These aromas from the oils help stimulate brain functions, which in turn acts as healing therapy. This promotes relaxation and other health benefits.
Essential oils are the main components of aromatherapy, and they are diffused, and/or can also be used topically. Aromatherapy is gaining momentum as a form of alternative medicine used for various purposes including mood enhancement, pain relief and improved cognitive functions.
With regards to brain science, some Japanese researchers had a notion that maybe certain smells could lead to nerve rebirth in Alzheimer's patients. Nerve cells in the brain are continually being born from infancy till death and this restores hope that the human brain retains a potential for self-renewal throughout life. So they used an aromatherapy regimen of rosemary, lemon, lavender and orange for a month, and got significant results and improvement.
The ancient Greeks claimed that rosemary “comforts the brain,….sharpens understanding, restores memory loss and awakens the mind” and it seems they were right. Plants are tiny little “chemical factories” that manufacture all sorts of compounds that could have neuro-protective benefits.
Aromatic herbs have volatile compounds that theoretically could enter the blood stream by way of the lining of the nose or lungs, and then potentially cross into the brain and have direct effects. And this has been confirmed by many other researches, like the one done using the rosemary aroma, in different diffusion ratios. It has also been seen that ground rosemary herb at normal culinary dosage consumption shows positive results on the speed of memory, while an over-dose showed a negative result.
There are different oils for different purposes, both therapeutic and curative. For our cognitive purposes, we recommend Rosemary, Peppermint, Sweet Orange, Sage, Eucalyptus, Lemon, Ylang Ylang, and Sweet Basil essential oils.