New research identifies a simple trick that may reduce drinking
Written By : Roshni Dhar
Medically Reviewed By : Dr. Kamal Kant Kohli
Published On 2022-08-20 03:45 GMT | Update On 2022-08-20 03:45 GMT
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A new study published in the scientific journal Addiction has found that households in the UnitedKingdom consumed about 6.5% less wine when drinking from smaller (290 ml) glasses than from larger (350 ml) glasses.
This randomised controlled trial recruited 260 UK households from the general population that consuming at least two 75cl bottles of wine each week. During two 14-day intervention periods, households were asked to buy a pre-set amount of wine to drink at home in either 75cl or 37.5cl bottles, in randomised order.
They were also randomised to receive smaller or larger glasses from which to drink. Volume of wine consumed at the end of each 14-day intervention period was measured using photographs of purchased bottles, weighed on provided scales. Using smaller glasses reduced the amount of wine drunk by around 6.5% although there is some uncertainty around this effect. Drinking from smaller bottles reduced the amount of wine drunk by 3.6% (146ml per fortnight) but there isgreater uncertainty around this effect.
Wine is the most commonly drunk alcoholic beverage in Europe, and most of it is consumed in homes rather than in bars, restaurants or pubs. It's already known that using larger glasses increases the volume of wine sold in restaurants and the size of wine glasses, in general, has increased dramatically over the last three decades.
If the effects of wine glass size on consumption are proven reliable, with effects sustained over time, reducing the size of wine glasses used in homes could contribute to policies for reducing drinking. These policies could include pricing glasses according to capacity to increase the demand for smaller glasses, and regulating glass sizes in bars, restaurants, and other licensed premises to help shift social norms for what constitutes an acceptable glass size for use outside as well as within the home.
Ref:
Mantzari E, Ventsel M, Ferrar J, Pilling MA, Hollands GJ, Marteau TM (2022) Impact of wine bottle and glass sizes on wine consumption at home: a within and between households randomised controlled trial. Addiction: doi: 10.1111/add.16005
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