Some examples of connective tissues are bone, cartilage, blood, and adipose (fat). Blood is the main connective tissue in the circulatory system, but it's a liquid connective tissue.
Lewith and colleagues investigated the effects of lavender aromatherapy on depressed mood and anxiety in female patients being treated with chronic hemodialysis.59 The effects of aromatherapy were measured using the Hamilton rating scale for depression (HAMD) and the Hamilton rating scale for anxiety (HAMA).
Chemicals in essential oils might trigger smell receptors in your nose that send messages to the part of your brain that controls your mood, suggests the Mayo Clinic. More research is needed to learn if aromatherapy can help treat depression.