The investigators will conduct a randomized double blinded placebo controlled study of 40 adults (≥18 to 90 years old). Twenty (20) subjects will be included in the placebo arm, and 20 in the treatment arm. Patients will be randomly allocated to receive placebo or resveratrol. After randomization, the two groups of subjects will be followed up in exactly the same way, and the only differences between the care they receive will be those intrinsic to the treatment being compared. The randomization will minimize allocation bias, balancing both known and unknown prognostic factors, in the assignment of treatments.