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Apr 24

Diet myths: How not to eat yourself healthy

In the 1940s, Walter Kempner, a researcher at Duke University, North Carolina, became famous for using salt restriction to treat people with high blood pressure. Later, studies confirmed that reducing salt could help reduce hypertension. But you don't have to avoid salt entirely, says Sara Stanner, of the Nutrition Society. "Adults need a small amount of sodium in their diet to maintain the body's fluid balance."

Average salt intakes have come down in recent years, mainly due to product reformulation. But it's still the case that many of us consume too much salt around 9g a day instead of the maximum recommended dose of 6g per day around 75 per cent of which is in processed foods such as soups, sauces, sandwiches and processed meat.

"People often think it's really bad to add salt into cooking or on to your plate, but that forms no more than 10 per cent of your total intake," says Stanner. "So you can get people who never have salt at their table, but have a very high salt intake, while others put salt on most meals, but have a lower intake."

Myth: Carbohydrates are bad for you

"Carbohydrate-rich foods are an ideal source of energy. They can also provide a lot of fibre and nutrients," says Sara Stanner. "Potatoes, for instance, are one of the best sources of vitamin C, yet potato consumption in the UK has fallen considerably."

One of the main reasons carbohydrates have fallen out of favour is that they are perceived to be fattening. "Foods high in carbohydrates have had a rough time in the past few years, thanks to the success of low-carb diets, such as the Atkins diet," explains Juliette Kellow.

"But there's no proof that carb-rich foods are more likely to make us gain weight than any other food. Ultimately, it's an excess of calories that makes us pile on the pounds and it really doesn't matter where those extra calories come from. More often than not, it's the fat we add to carbs that boosts the calorie content, such as butter on toast, creamy sauces with pasta and frying potatoes to make chips."

Myth: Dairy products are fattening and unhealthy

In a study by the Curtin University of Technology in Perth, Australia, slimmers on low- calorie diets which included cheese, yoghurt and milk lost more weight than those on low-dairy diets. Those on the diet including dairy also had the least stomach fat, lower blood pressure and a significantly better chance of avoiding heart disease and diabetes.

Dairy products are packed with essential nutrients that help keep us healthy, says Juliette Kellow. "As well as being good sources of protein, zinc and some B vitamins, dairy products are packed with calcium, a mineral that helps to build strong, healthy bones and the stronger the bones are, the less likely you'll be to suffer from osteoporosis in later life."

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Diet myths: How not to eat yourself healthy

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