Definition of Cognitive Decline Joints become stiffer, arteries harden, and the brain isn't as supple as it used to be. Cognitive decline is among the normal processes of aging.
Blood circulation: Lavender essential oil is also good for improving the circulation of blood in the body. Research suggests that aromatherapy using lavender oil has beneficial effects on coronary circulation. It also lowers blood pressure and is often used for hypertension.
1 Using essential oils when you have cancer. 2  Essential oils to avoid when you have cancer. 3  Essential oils to avoid when you have estrogen (oestrogen) dependant cancers.  Essential oils to avoid when you have skin cancers and melanomas.