Compared with the control group , the Chlorella group exhibited remarkable changes in total cholesterol ( Chlorella -1.6 % ; placebo 0.03 % ; P = 0.036 ) , triglycerides ( Chlorella -10.3 % ; placebo 11.9 % ; P = 0.002 ) , lutein/zeaxanthin ( Chlorella 89.6 % ; placebo -1.7 % ; P < 0.0001 ) , and - carotene ( Chlorella 163.6 % ; placebo 15 % ; P < 0.0001 ) .