taylor wallace is here to give us theyo buzz.'s talk aboutha tannins, wt are they? >> comunds in d red wine that make them taste dry. what's really interesting about tannin is that they bind and block sugar from being absorbed in your body. >> reporter: so letk about sugar. is there -- what's the content? like what should we look like? >> obviously each wine, dryer reds he less. >> that means rose isth one o higher sugar wines. >> reporter: okay. let's talk about sufficientlyites, hear so much about that. what are they? >> they are preservatives that ree food industry uses. they are naturallynt in many fruits and vegetables, but you use them in higher concentration, particularly in whitee because it clarifies the wine. >> is that what causes thehe aches? >> well, so in some people, yes, some individuals are sensitive touf scientlyites. however, some yids are also sensitive to tannins and for the majority of the population you're getting aca headache e you're drinking too many glasses of red wine. >> that might be my problem let's