London, Feb 16 (IANS): If you drink two glasses of wine in a day, it can push you over recommended daily sugar limit, a team of experts have warned.

The Alcohol Health Alliance UK (AHA), which represents more than 60 health organisations, looked at the calorie and sugar content of 30 bottles of red, white, rose, fruit, and sparkling wine sold in the UK, reports Sky News.

It concluded that not only was there a wide variation of sugar and calories across different wines but that consumers were "being kept in the dark" about what they were drinking as crucial information was missing from most labels.

Consumer information, it said, was "woefully inadequate," the report said.

Government guidelines recommend adults should consume no more than 30g of so-called free sugars per day. The AHA study showed it was possible to reach almost this entire amount by drinking two medium glasses of wine.

But not only was sugar content high -- the study also showed that just two medium-sized glasses of the most calorific wines analysed contained more calories than a McDonald's burger.

The AHA analysis suggested many of the most sugar-packed wines were the ones which had the lowest strength of alcohol while wines with high calorie content tended to be higher strength drinks.

It said that with no legal requirement to display sugar content on alcohol labels, drinkers may opt for a lower-strength alcohol thinking that this was a healthier option -- but could unwittingly be upping their daily sugar intake, the report said.

None of the 30 products examined in the study displayed sugar content on their labels -- information which is required for all non-alcoholic drinks.

Calorie content was only displayed on 20 per cent of the labels examined.