Inclusion Criteria:  Males and females 50-85 years old Generally healthy, non-smoker Able to provide informed consent BMI: 30-40 kg/m2  Exclusion Criteria:  Existing auto-immune conditions Use of warfarin or other blood thinners Use of anti-inflammatory drugs, cardiovascular medications, lipid-altering drugs, and hormone replacement therapy Individuals engaged in vigorous exercise (>2 x 30 min/week), vegetarians, and people who routinely take multivitamins or herbal supplements.