Anyone who has looked into eating healthily has no doubt heard of Dr Michael Mosley, the inventor of the famous 5:2 diet, where you eat healthily five days a week and fast on the remaining two days.
The presenter and former medical doctor is one of TV's best known diet experts, and often offers viewers various tips to stay fit and healthy. He also recommends which foods dieters should avoid if they want to lose weight, such as starchy carbs.
However, it might surprise you to know that the weight loss guru doesn't always avoid full-fat options. In an interview on BBC Radio Wales, Dr Mosley revealed some of the things you can often spot in his trolley - such as full-fat Greek yoghurt.
When asked by presenter Behnaz Akhgar what items he and his wife Clare always include in their shopping basket, the diet expert replied: "I think I like to include full-fat yoghurt. I'm a big fan particularly of Greek yoghurt because it's got more protein and more taste. I eat quite a lot of yoghurt.
"I also include some healthy forms of protein. I've turned into a major fish fan recently. I used to hate fish. You have to try to choose the sustainable stuff, but the thing about fish is it's so flexible. It's so full of good stuff - omega 3, fatty acid and things like that."
He also always make sure they have plenty of olive oil, which he said is "the closest thing we have to the 'elixir of life' in the sense that it is a fundamental part of the Mediterranean diet."
Behnaz replied: "A friend of mine has a spoonful of it every night before he goes to sleep. He swears by it."
Dr Mosley then explained that there is "plenty of evidence for the benefits of olive oil", but there are also myths around it. He added: "The idea that you shouldn't cook with it because of its smoke point. But that's nonsense, I've looked into that. I do think it's a super healthy oil but it's also a bit expensive as well".
The diet expert also said he always makes sure to have plenty of nuts around the house, which he eats as a snack. He added: "I have a very sweet tooth and given half a chance I'll be reaching for the bars of chocolate, so I have to keep them out of the house and I have nuts in the house instead to make sure that hits the spots but it isn't quite as packed with calories."
Lastly, Dr Mosley revealed he is a big fan of butter, and used to buy margarine previously but then "became less convinced" it would be better for him.
He continued: "The thing about butter and indeed quite a lot of dairy products is although they do have saturated fats in them they don't seem to be the unhealthy form of saturated fats so the evidence now suggests that certainly in moderation butter is a perfectly healthy thing to be consuming and like you I'm a fan of it."
Do you have a story to share? Email us at yourmirror@mirror.co.uk