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People struggle to estimate portion sizes for food such as chocolate, crisps and cheese, A Survey of 1,265 Which? subscribers suggests.

They may need more help to assess how healthy products are, the consumer group says.

A third guessed a 185g (6. 5oz) tube of Pringles contained two to four portions. But the packaging says it has six to Seven - Some 13 crisps each.

On a 220g box of Quality Street , the label suggests a portion is two sweets.

Unrealistic recommended serving sizes can mislead People into thinking they are consuming fewer calories, and less fat, sugar or salt, than they actually are, Which? says.

Labelling was really valuable But needed to be based on " meaningful and consistent" portion sizes, Which? nutritionist Shefalee Loth said.

" People can be confused by inconsistent and unrealistic serving sizes and The Way that manufacturers provide these can sometimes make it difficult to assess just how healthy a product is, " She Said .

Most of those surveyed said:

The Which? report found Some well-known brands of crisps and chocolate were available in a range of pack sizes, with inconsistent portion sizes across these different packs.

Which? asked 229 People to pour themselves a glass of wine or juice At Home And Then measure how much they had served.

A Food and Drink Federation representative said a range of portion sizes were available " to help consumers achieve a healthy balanced diet and to meet the varying requirements of families".

" Food and drink manufacturers are committed to providing clear and accurate information and voluntarily include traffic-light labelling on The Front of packs, so People can make an informed decision on the food they buy, " the representative added.

Most nutrition information on packaging is listed per 100g,

Source of news: bbc.com