Mastiha Oil is a 100% natural product of the Mediterranean, extracted from the resin of Mastiha. Over 90 compounds have been identified in Mastiha oil, with monoterpenes exhibiting favorable effects in regulating mechanisms of oxidative stress and inflammation. The aim of this study is to determine the effect of Mastiha oil in adults with Metabolic Syndrome. 90 participants will be allocated to two groups, (45 in intervention group and 45 in control group). Mastiha oil will be provided in the form of soft gel capsules to the intervention group, whereas the control group will not consume the capsules. Both groups will receive standard nutritional counselling. The intervention will last 3 months.

The effects of the intervention will be evaluated via clinical and laboratory markers.

Inclusion Criteria:

• 30 years < Age < 75 years
• Metabolic Syndrome cardiometabolic parameters
• A stable weight for ≥ 3 months pre-intervention
• An unchanged treatment regimen for ≥ 6 months pre-intervention

Exclusion Criteria:

• Hepatotoxic Medication
• Untreated Diabetes Mellitus
• Dysthyroidism, hypopituitarism, Cushing syndrome / disease
• Pregnancy, lactation
• Psychiatric or mental disorder
• Any use of antioxidant-phytochemical rich supplement, vitamin D supplement, anti-, pre- or pro-biotics within 3 months pre-intervention