Overweight Clinical Trial
Official title:
Health Effects of Chronic Supplementation With a Natural Extract High in Hydroxytyrosol (Hytolive®) in Individuals at High Risk of Developing Age-related Diseases
The primary objective of this study is to ascertain the effects of chronic consumption of a hydroxytyrosol-rich extract from olive (Hytolive®) in a population at high risk of developing age-related pathologies such as type 2 diabetes and cardiovascular diseases. The markers measured will be associated with oxidative stress, inflammation, and homeostasis glucose and lipid profiles. Improvements in these parameters could potentially prevent the onset of pathologies associated with aging.
Fifty subjects 40-75 years old overweight (BMI between 24-29,9 kg/m2) and prediabetes (fasting blood sugar between 100-126 mg/dl and/or glycated hemoglobin between 5,7-6,4%) will be recruited. Detailed inclusion and exclusion criteria are provided below. Participants will be randomly divided into two groups, one to consume the Hytolive® capsule and the other a placebo. The intervention study has been designed for daily consumption before breakfast of one capsule for 16 weeks. The study includes a two-week washout period during which subjects will not be allowed to consume olives or virgin olive oil. At the beginning and end of the study, upon arrival at the ICTAN-CSIC Human Nutrition Unit, volunteers will provide a urine sample corresponding to the first morning void, and a nurse will draw a fasting blood sample (20 mL distributed in tubes with various anticoagulants for measurements). Additionally, their blood pressure will be measured, and a complete anthropometric and body composition study will be conducted. Furthermore, volunteers will provide a stool sample from the preceding days (these samples will not be used in this study but will be stored at -80°C for potential future determination of the intestinal microbiota metagenomic profile). Subsequently, dietary controls will be conducted, physical activity and emotional well-being tests will be administered, and fatigue will be evaluated. Additionally, there will be an interim visit aimed at verifying adherence to supplementation. For this purpose, volunteers will provide a urine sample corresponding to the first morning void on an empty stomach, in which levels of hydroxytyrosol and its derivatives will be determined. Likewise, dietary and physical activity controls will be conducted to confirm that volunteers are not altering their habits. ;
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