For decades it has been labelled public adversary number 1 and a “low-fat” food label is used to convince us that what we’re buying is healthy.
The problem is low-fat can mean veggies or only clever marketing for “we took out all the fat and then pumped it full of sugar”.
So there I was having a moment in the supermarket – a bathtub of low-fat yoghurt in one hand and a full-fat one in other – mulling which was actually better for me.
If I had a third hand, it would have been scratching my head. And I’m not alone.
“When there’s a huge wall of yoghurt, even I find it paralysing, ” told Susan Jebb, a nutrition professor at the University of Oxford.
When you take the fat out of products, particularly dry ones like cake or cookies, then something has to replace it.
“It tends to be sugar – the calories in digestives and low-fat digestives are almost the same, ” Prof Jebb continued.
“Lots of yoghurts are rammed with sugar, that is the thing that riles me about yoghurt.”
There is a simple answer with yoghurt – a few brands are both low in fat and sugar, although I need to chuck in a little bit of fruit to make it palatable.
But what about the case that we should be feeing more fat?
Some have argued that the message about cutting all fats when discussing bad saturated fats from processed foods was oversimplified.
While others have induced the case that favouring carbohydrates in our diet – particularly refined carbs like white bread and pasta, is playing havoc with our hormones to increase the risk of kind 2 diabetes and building us pile on the pounds.
We do all require fat in our diet – it contains essential fatty acids and is important for assimilating fat-soluble vitamins such as A, D and E.
The question has always been: “How much fat should we eat? ” And the mantra has been low-fat, high-carb.
The World Health Organization advises that between 30% and 35% of our calories should come from fat arguing there is “no probable or convincing evidence” that the total amount of fat in our diet is altering health risks of cancer or cardiovascular disease.
So when it comes to the total amount of fat( and there is a separate debate when we come to consider different types of fat) it’s actually a question of how it affects our waistlines.
And fat is certainly calorific.
A gram of fat is worth around nine calories – twice the amount as carbohydrate or protein at four calories per gram.
Too much fat, like too much of anything, will attain you put on weight and it is incredibly easy to overeat calorie dense foods.
So it appears to be an easy target for people trying to lose weight.