Enjoying a glass of white wine on a frequent basis can damage the teeth, something many wine makers and tasters will know first-hand, experts say.
Pale plonk packs an acidic punch that erodes enamel far more than red wine, Nutrition Research reports.
It is not the wine's vintage, origin or alcohol that are key but its pH and duration of contact with the teeth.
Eating cheese at the same time could counter the effects, because it is rich in calcium, the German authors say.
It is the calcium in teeth that the wine attacks.
In the lab, adult teeth soaked in white wine for a day had a loss of both calcium and another mineral called phosphorus to depths of up to 60 micrometers in the enamel surface, which the researchers say is significant.
Riesling wines tended to have the greatest impact, having the lowest pH.
A "kinder" tooth choice would be a rich red like a Rioja or a Pinot noir, the Johannes Gutenberg University team found. Read more...
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