A weight loss expert has exposed three so-called “slimming” essentials that could secretly be adding pounds this summer. While smoothie bowls, iced coffees and barbecue salads might appear like sensible choices, they are frequently packed with concealed sugars, fats or calories – and could be the genuine culprit behind your stalled weight loss.

Professor Franklin Joseph, consultant physician and head of Dr Frank’s Weight Loss Clinic, says numerous Britons are tumbling into the “healthy halo” snare – and cautions that some of these trendy selections might be causing more damage than benefit.

He said: “It’s not about cutting out everything, but understanding how certain foods – even the ones marketed as healthy – can quietly derail your goals.”

Three foods that sabotage weight loss

Smoothie bowls

“They’re colourful, Instagram-friendly and often topped with fruit, seeds and granola – but smoothie bowls can contain more calories than a full English breakfast,” Prof Joseph said.

“People forget that blended fruit removes the fibre that slows down sugar absorption. Then you add sweet toppings like honey, nut butter and granola – and suddenly you’ve got a 600 to 800 calorie breakfast that leaves you hungry an hour later.”

Rather than this, he suggests whole fruits paired with a protein source such as Greek yoghurt or a modest handful of nuts to maintain satiety for extended periods.

Shop-bought iced coffees

“It might feel like a light treat, but many of the iced coffees sold in supermarkets and cafes are loaded with syrups, cream and full-fat milk – some contain more sugar than a can of Coke,” he warned.

Even beverages labelled as ‘skinny’ can contain additives or sweeteners that trigger cravings and increase hunger later in the day.

“If you’re watching your weight, go for black iced coffee with a splash of milk – or make your own at home so you know exactly what’s in it.”

Creamy summer salads

“Salads sound like the perfect weight loss choice – but the devil’s in the dressing,” Prof Joseph cautioned. “Coleslaw, potato salad and pasta salad are BBQ staples, but they’re often swimming in mayonnaise or creamy sauces that are high in fat and calories. Even a small serving can pack in more than 200 calories without offering much in terms of fibre or protein.”

He suggests swapping creamy dressings for lighter options like lemon juice, balsamic vinegar or olive oil with herbs – and bulking salads out with grilled veg, beans or lean protein to stay satisfied.

Think twice before you tuck in

Prof Joseph says summer brings more casual eating – from BBQs to picnics and iced drinks on the go – and it’s easy to underestimate the hidden calories.

“These foods aren’t ‘bad’ but they can quietly add up if you’re trying to lose weight,” he said. “Being a bit more mindful – whether that’s skipping a creamy salad, making your own iced coffee or choosing whole fruit over a smoothie bowl – can make a big difference over time.”