Polyphenol extracts are everywhere. Natural flavors are polyphenol extracts. Sodas contain polyphenols from natural flavors. Various plant oils contain concentrated polyphenols. Various supplements are marketed on the very basis that such supplements contain polyphenols, for example quercetin, pycnogenol and resveratrol. Coffee and tea contain polyphenols. Almost all frozen foods will contain natural flavors. Polyphenol extracts are a major difficulty.
This is starting to sound about as bad as ‘electromagnetic hypersensitivity’ in terms of being able to escape the difficulty. Cases of ‘electromagnetic hypersensitivity’ could in fact be adverse reactions to polyphenol extracts and concentrated polyphenols.
Adverse reactions to polyphenols are not immune responses. A difficulty with polyphenols is that polyphenols bind to iron. Polyphenols binding to iron in the gut could lead to inactivation of aconitase 1 in the gut which could have systematic effects.
I have been very strongly stressing the effect of polyphenols on iron absorption, however, there are likely other difficulties with polyphenols for individuals. Polyphenols increase beta-oxidation. If the there are difficulties in fatty acid absorption and fatty acid metabolism increases in beta-oxidation due to polyphenols can not be sustained with difficulties then arising. Even with no difficulties in fatty acid absorption and fatty acid metabolism polyphenol laden drinks should not be drunk throughout the day. Limiting coffee to two cups of coffee drunk in the morning away from iron supplements could be a safe way to drink coffee.