( A new finding and revelation comes in t...)Green tea’s health claims questioned: FD,Health

A new finding and revelation comes in the form of health claims that green tea is no longer a boon to the heart. The petition proposed as a model qualified health// claim says "Daily consumption of at least 5 fluid ounces (150 mL) of green tea as a source of catechins may reduce a number of risk factors associated with cardiovascular disease. FDA has determined that the evidence is supportive, but not conclusive, for this claim. (Green tea provides 125 mg catechins per serving when brewed from tea and 125 mg catechins as a pre-prepared beverage)."

This petition was posted on the FDA site by FDA on July 28, 2005 as a qualified health claim petition for a 60-day comment period.

According to rules of governance a health claim characterizes the relationship between a substance and a disease or health-related condition (21 CFR 101.14(a)(1)). The substance must be associated with a disease or health-related condition for which the general U.S. population, or an identified U.S. population subgroup is at risk (21 CFR 101.14(b)(1)).

The agency then separates individual reports of human studies from other types of data and information. FDA focuses its review on reports of human intervention and observational studies.

In addition to individual reports of human studies, the agency also considers other types of data and information in its review, such as meta-analyses, review articles and animal and in vitro studies.

FDA uses animal and in vitro studies as background information regarding mechanisms of action that might be involved in any relationship between the substance and the disease. FDA evaluates the individual reports of human studies to determine whether any scientific conclusions can be drawn from each study. The absence of critical factors such as a control group or a statistical analysis means that scientific conclusions cannot be drawn from the study (Spilker et al., 1991, Federal Judicial Center, 2000).
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