Given preliminary data in animal (proprietary data) have shown that XXS (a mixture of natural polyphenolic extracts of edible plants) has a significant and favourable effect on oxidative stress notably with a decrease in certain markers of oxidative stress and on plasma lipid parameters, the investigator proposes to study the effect of 6 months of treatment with XXS in a controlled study against placebo in a population of persons presenting a lipid profile at the upper limit of normal.

Inclusion Criteria:

• Persons who have provided written consent
• Persons aged over 18 years
• Presenting LDL levels between 1.30 and 1.90 g/l and/or triglyceride levels between 1.5 and 3 g/l

Exclusion Criteria:

• Persons without national health insurance cover
• Pregnant or breastfeeding women
• Adults under guardianship
• Patients with diabetes (Insulin-Dependent Diabetes (IDD) or Non-Insulin-Dependent Diabetes NIDD)
• Patients with coronary artery disease
• Patients with atherosclerosis
• HDL>0.80 g/l
• receiving treatment with lipid-lowering agents (statins, fibrates, ezetimibe or Ω3)
• Consuming vitamin supplements (A, C, E…)
• Consuming oligoelements or minerals (Se, Zn, Ca…)
• Renal insufficiency (creatinine clearance < 30 ml/min calculated according to the Modification of the Diet in Renal Disease (MDRD))