High Blood Pressure
One study discovered that chlorella supplementation had benefit in stabilizing blood pressure for people with mild to moderate hypertension. Although chlorella is not a primary supplement to use to deal with high blood pressure it can be an adjunctive treatment. It would also be good option for people who have high blood pressure because of toxic metal accumulation such as mercury or cadmium.

Small human and animal studies have demonstrated that chlorella assists the body in detoxification of toxic metals such as mercury, and cadmium.

Ulcerative Colitis
This is an inflammatory condition which involves ulceration of the gut mucosa of the colon and rectum. One pilot study lasting two months looked at chlorella supplementation with 10g tablets and 100 ml of the liquid form for those who have ulcerative colitis. For people who completed the study a sigmoidoscopic examination found considerably less inflammation. The decrease in stool frequency was also significant. Patients done a questionnaire that revealed much greater quality of life throughout the study.

Vegetarianism
Vegetarians often supplement chlorella to improve their vitamin B12 levels. One study from the Journal of Nutrition found that nori (a type of seaweed) and chlorella increased blood levels of this vitamin. Although, some experts wonder if this form of vitamin B12 is an active form usable in the body. More studies are needed to confirm whether chlorella supplements can be relied upon as a primary vitamin B12 source.