Chlorophyll found in all green foods (the darker the better), is remarkably similar to the human red blood cell & is one of the reasons why green foods are considered blood building foods. It enters the blood stream pretty quickly, increasing oxygen uptake. This lifts the mood by combating oxidative stress[i] and can improve inflammation and act like a natural mild anti-depressant. Green foods/juices also have the highest folate content of all other plants. Folate is the natural version of synthetic folic acid. It helps the brain produce neurotransmitters, including serotonin, which affects mood.