A report by the organisation SafeFood has found that some lunch wraps contain as many calories as a 12-inch pizza.
A survey of 240 takeaway wraps from 80 outlets across the island of Ireland found that some contain up to 1,000 calories and many are high in salt and fat.
SafeFood conducted the survey after research found that one in three people believe that wraps are a healthier choice than a sandwich, but it found the reality can be quite different.
The average tortilla wrap contains almost as many calories as two slices of bread, and fillings in many wraps are very high in calories, salt and fat.
The three most popular fillings were chicken Caesar salad, chicken tikka and chicken and salad.
The total calories for the chicken tikka and salad wraps surveyed ranged between 267 and 977 calories with total fat between 6g and 59g.
The survey examined 240 takeaway wraps and the biggest portions were almost two-and-a-half times the size of the smallest portions, while of the chicken tikka wraps examined the total calories ranged from just under 300 to almost 1,000.
The report shows that eating a large chicken tikka wrap with a soft drink and crisps could mean consuming almost 1,400 calories, or 60% of your daily intake, just at lunchtime alone.
SafeFood is urging people to choose smaller portion sizes, go for lean meats and fish, add more salad and cut back on sauces for healthier lunchtime wraps.