Subgroup analyses revealed that palm oil has a beneficial effect on High-density lipoprotein cholesterol levels when more than 30 % of total dietary energy was constituted by fat .
This review revealed that palm oil does not induce increases in cardiovascular disease risk risk-related biomarkers relative to unsaturated fatty acids .
BACKGROUND AND OBJECTIVES The precise association between palm oil consumption and  lipid-related cardiovascular disease risk remains unclear .
A systematic review was thus performed to assess whether palm oil consumption has a negative effect on plasma lipid-related cardiovascular disease marker levels .
Nonhypercholesterolemic effects of a palm oil diet in Chinese adults.
The effects on serum lipids of palm oil ( PA ) used in Chinese diets were compared with those of soybean oil ( SO ) , peanut oil ( PE ) and lard ( LA ) in normocholesterolemic subjects and with that of PE in hypercholesterolemic subjects . Normocholesterolemic subjects [ 120 men , 18 - 25 y , total cholesterol ( TC ) 2.8 - 5.0 mmol/L ] were assigned to four groups to consume test diets for six consecutive weeks after a run-in period of 3 wk . About 30 % of dietary energy was derived from fat , 75 - 80 % of which came from test oils . In comparison with the entry level , the average serum TC and LDL cholesterol ( LDL-C ) were 6.7 and 13.1 % lower , respectively , in the PA group and 22.8 and 30.7 % higher , respectively , ( P < 0.05 ) in the LA group . At the end of the test , serum TC , LDL-C and the ratio of TC/HDL cholesterol ( HDL-C ) in the PA group were significantly lower than those of the LA group . Hypercholesterolemic subjects ( 31 men , 20 women , 32 - 68 y , TC 5.5 - 7.0 mmol/L ) were divided into two groups . For 6 wk , one group ( 15 men , 10 women ) consumed the PA diet ; another group ( 16 men , 9 women ) consumed the PE diet . After a 3-wk interval , the two groups interchanged diets for another 6 wk . The test diets again contained about 30 % energy from fat , 60 - 65 % of which came from test oils . Compared with entry values , the PA diet caused significant reductions in serum TC , LDL-C and TC/HDL-C during the first 6 wk and also a significant reduction in TC/HDL-C during the second 6 wk . The PE diet had no significant influence on serum lipids in either experimental period
Subgroup analyses revealed that palm oil has a beneficial effect on High-density lipoprotein cholesterol levels when more than 30 % of total dietary energy was constituted by fat .
This review revealed that palm oil does not induce increases in cardiovascular disease risk risk-related biomarkers relative to unsaturated fatty acids .
BACKGROUND AND OBJECTIVES The precise association between palm oil consumption and  lipid-related cardiovascular disease risk remains unclear .
A systematic review was thus performed to assess whether palm oil consumption has a negative effect on plasma lipid-related cardiovascular disease marker levels .