Wine glass size determines how much you drink

The amount of wine you drink could vary depending on the size of your glass, a new study suggests.

A standard wine pour is 5 oz., but the study at Iowa State University found that participants, when given a wide wine glass, poured themselves 12 percent more wine than when they were given a standard wine glass. The findings were published in the journal Substance Use & Misuse.

This 12 percent difference means that people could be drinking as many as two or three servings, when they think they’ve only had one, the researchers said.

Laura Smarandescu, an assistant professor of marketing at Iowa State University, said that the results could be due to the fact that most people tend to focus more on vertical measures of liquid than horizontal ones, which explains why most people drink less when using a narrow glass.

The researchers also found that when using a clear glass, study participants poured themselves 9 percent more white wine than red wine, suggesting that the contrast of the wine against the glass also can play a role in how much wine people pour.  And participants also poured more wine if someone was holding the glass, compared to when it was resting on a table.

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Sourced from: Live Science, Surprising Reasons You Drink Too Much Wine