The Palaeolithic-type diet resulted in lower systolic blood pressure ( -9.1 mmHg ; P = 0.015 ) , diastolic blood pressure ( -5.2 mmHg ; P = 0.038 ) , total cholesterol ( -0.52 mmol/l ; P = 0.037 ) , triglycerides ( -0.89 mmol/l ; P = 0.001 ) and higher HDL-cholesterol ( +0.15 mmol/l ; P = 0.013 ) , compared to reference .