From Healing Oils of the Bible.
The Blood-Brain Barrier
It was thought for years that the interstitial tissues of the brain served as a barrier to keep damaging substances from reaching the neurons of the brain and the cerebrospinal fluid. Instead of a barrier, it would be more accurate to consider it as a sieve or filter through which only molecules of a certain size or smaller can pass.
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 chemotherapy doesn't work on brain cancer. Some of the smaller molecules get through, but not the whole suite of drugs intended ...
Essential oils of every species cross the blood-brain barrier. This makes them uniquely able to address disease, not only from a physical level, but from a more basic and fundamental level--that of the emotions which are often the root cause of physical illness.
Sesquiterpenes are compounds containing three isoprene units, which is fifteen carbons and twenty-four hydrogens per molecule (C15H24)--molecular weight 204 amu for a hydrocarbon sesquiterpene. There are more than 10,000 kinds of sesquiterpenes.
Sesquiterpenes are the principal constituents of Cedarwood (98%), Vetiver (96%), Sandalwood (Aloes) 95%, Patchouli (85%), Ginger (70%), Myrrh (60%). Spikenard (50%), and Black Pepper (47%). They are also found in Galbanum (4%) and Frankincense (8%).
Sesquiterpene molecules deliver oxygen molecules to cells, like hemoglobin does in the blood. Sesquiterpenes can also erase or deprogram miswirtten codes in celluar memory. Sesquiterpenes are thought to be especially effective in fighting cancer. The root problem with a cancer cell is that it contains misinformation, and sesquiterpenes can delete that garbled information. At the same time the oxygen carried by sesquiterpene molecules creates an environment where cancer cells can't reproduce. Hence, sesquiterpenes deliver cancer cells a double punch--one that disables their coded misbehavior and a second that stops their growth.