5. Clean and Lean Diet - loved by Holly Valance and Hugh Grant
How it works: The key is to stick to fresh, unprocessed foods, as close to their natural state as possible. For example, a chopped apple still looks like an apple while a crisp or chip looks nothing like a potato.
If something is unrecognisable, it's probably been heavily processed - avoid. Artificial flavours or preservatives are a no-go so it's goodbye ready meals and takeaways. Foods should generally contain fewer than five or six ingredients to ensure they're as natural as possible.
There is no exact plan. Eat three meals a day and try to include three key elements: protein in the form of lean meat or fish, fat in the form of avocado, nuts, seeds, and olive or coconut oil, plus vegetables.
A rainbow of different colours ensures you're getting different vitamins and minerals so fill your plate with spinach, peppers, broccoli, and sweet potatoes.
The expert says: “The essential principle - cutting out processed foods and eating lots of healthy greens - is good. You shouldn't go short of nutrients and because there's bulky veg you'll feel full.
You don't have to cut out carbs either, try to have some brown rice, quinoa, lentils and you'll be really healthy. You still need to watch portion sizes and how many homemade smoothies you have.”
