Essential oils like anything are not a one size fits all kind of process...the nutrients we need come from our foods & not all SNP's require supplementation. Supporting genetic defects w/ EO's is simple in the sense, less is more & it's not advisable to select them based on the plant. Certain constituents assist the metabolism of amino acids, carbohydrates & fats by stimulating cell communication. When we're talking about CBS & NOS, a more important factor is eliminating ammonia from the body that tends to build w/ a defect here. Walnuts are a super, more efficient way because they are a complete food & the body uses all the nutrients. To feed it incrementally w/ supplements creates challenges due to additives, etc. Because of this, bolstering the digestive system is imperative. The purpose for mentioning ammonia is because BH4 is used to scavenge ammonia. BH4 is also required for NOS. BH4 is produced via the transfer of hydrogen in the fermentation process. This can be assisted by including cinnamon into the diet. There is not a lot of oil in the powder; however, there is enough because less is more. As for including essential oils, it's not appropriate to say which ones to suggest because there are constituents that affect these cycles & understanding the individual genome is crucial. It's fair to say, some people see benefits, & some do not only because we're all different due to our diets, lifestyle, supplement choices, medications & genome. It is important to note, some constituents stimulate certain chemical reactions & some inhibit reactions. Two good examples are dopamine & BH4 ....There again, some SNP's are quiet, only to cause adverse reactions to certain chemicals & meds; therein, leading to yet another symptom or the feeling that something isn't working.. What I've found with my own disturbing health / SNP's as well as with my clients, is less is more. Genuine & authentic is the best way to go ... that & taking care of the digestive system along w/ 1 supplement. I happen to have well over 100 SNP's & with the assistance of a PhD in nutritional science who has been involved w/ genetic defects & the human genome for over 20 years & now a colleague of mine, I eat intentionally, use bio-individual oils & take my supplement, I am golden. I will say, I am confident in his abilities as he has developed a line of neutraceuticals & after reviewing my genome, he confirmed my approach. The effects do vary ... we see successes that last & we see some that appear to go backwards. This is when having someone to adjust the approach is beneficial. The body is a walking chemistry lab which means things change. There is a lot of information out there & having an outside professional perspective is a good idea. Essential oils are the reason we have medications. They are currently not regulated by the FDA because, for the most part, they are considered bath & body. What I can say is they do not heal the body. The body is the only thing that can heal itself. To make claims stating anything else is unfounded. Plant DNA repairs itself much like the human DNA; therefore, essential oils have the potential to modify gene expression that's all. Including them into your wellness plan assists the body to get the nutrition into the cells where it belongs & the more wholesome the nutrient source, the better the body responds.