Several studies showed that after drinking coffee after drinking coffee​, subjects had increased blood levels increased blood levels of antioxidants. antioxidants have been associated withof antioxidants. antioxidants have been associated with decreased risk of heart disease. decreased risk of heart disease. a coffee companycoffee company financed this research. what is wrong with this​ study

On reading about several studies that show a decrease in heart risk, sponsored by a coffee company, I would like to know what the positives and negatives were for such studies. a sponsored study suggests to me that the results could be bias towards the sponsor, and raises issues of a conflict of interests. what did the studies investigate? Different interest areas or the same? The information gathered could be skewed by the coffee company to favor what they are trying to demonstrate. Were the coffees part of the investigation the same brand and strength, and how were they mixed? Also were the coffee organic, or non organic? Was the coffee ground at the factory, or ground 'at home ' then to what settings was the coffee ground at? Independent studies generally are more reputable as they are not influenced to lean towards a certain outcome.