To the best of our knowledge, the present study is the first evidence offered to support the hypothesis that the regular consumptions of Chlorella supplement (5 g/day) over 4 weeks significantly reduced serum TG, TC, non-HDL-C, VLDL-C, HDL-C/TG, and apo B in subjects with mild hypercholesterolemia using RCT study design. The gene discussed is APOB; the disease is familial hypercholesterolemia.