Found this online - thought it was amazing . . .
Blood-Brain Barrier/How the Oils Work - by David Stewart, Ph.D.
It would be more accurate to consider the Blood Brain Barrier a seive or filter through which only molecules of a certain size or smaller can penetrate. Most of the molecules of the substances used in chemotherapy are too large to pass through the Blood-Brain Filter which is why doctors say that chemo doesn't work on brain cancer. Some of the molecules get through, but not the whole suite of drugs intended. When it comes to essential oils, small molecules are what they are made of. That is why they are aromatic. . . .
Back to the so called Blood Brain Barrier: Essential oils are mixtures of dozens, even hundreds, of constituents all of which are primarily composed of Carbon, Hydrogen and Oxygen. The molecules of Essential oils are all very tiny and most of which can pass through the Blood Brain Barrier. All essential oils are principally composed of a class of organic compounds built of "isoprene units," where each unit is a set of five connected carbon atoms with some hydrogens attached. Molecules built of isoprene units are all classified as "terpens."
Terpenes are what make essential oils unique in the world of oily substances. Terpenes with molecules containing only one isoprene unit are called Phenylpropanoids and are found in Clove (90%), Basil (75%), Cinnamon (73%) and to a lesser extent in most other essential oils. Among other functions, Phenylpropanoids cleanse receptor sites.
Monoterpenes (substances containing two isoprene units or ten carbons atoms per
molecule). Monoterpens are found in most essential oils, but especially in Spruce (38%), Valerian (34%), and Juniper (14%) as well as Cistus, Fir and Pine. Among other functions, Monoterpenes reprogram the DNA at a cellular level which is
why healings via essential oils are often permanent, i.e. the miswritten codes in the
cells has been corrected.
Sesquiterpenes (substances containing three isoprene units or fifteen carbon atoms
per molecule) are principally found in Cedarwood(98%), Vetiver(97%), Sandalwood(90%), Black Pepper(74%), Patchouli(71%), Myrrh(62%), Ginger(59%), as well as Vitex, German Chamomile, Spikenard, Galbanum, and Frankincense (8%). Sesquiterpenes deprogram miswritten codes in the DNA.
There are also Diterpens (substances containing four isoprene units or twenty carbon
atoms per molecule), as well as Triterpens and Tetraterpens containing thirty and
forty carbons per molecule each respctively.
All of the Terpen family of molecules are small enough to penetrate the blood brain
Sesquiterpene molecules have the capability of carrying oxygen, like hemoglobin
does in the blood. Hence they are oxygenating to human tissue and are especially
effective in fighting cancer cells which cannot tolerate oxygen.
However, the combination (triple punch) of Phenylpropanoids, Sesqueterpenes, and
Monoterpens is especially healing with cancers and every other type of illness.
That's because with this combination you:
(1) first, you clean the receptor sites allowing proper transfer of hormones and proper information between cells;
(2) second, you deprogram or erase the wrong information from cells stored in the
MRNA and DNA; and
(3) third, you reprogram the cells with the correct information so they can function
properly and effect a permanent healing.
To one extent or another, most essential oils contain some of all three of these three types of terpens which is the secret to their healing power.
So there you have it in a nutshell: The Blood-Brain Barrier and the chemistry of how
Essential Oils Work to bring about healing.