It's the hottest way to lose weight - following a diet of basic foods that our ancient ancestors used to eat.
According to top nutrition scientists, "original foods" like fruit, vegetables, nuts and lean meat increase your metabolism and help you lose weight fast.
How does it work?
In the Stone Age, humans were all hunter-gatherers. They hunted for meat and fish, and foraged for wild plants, fruits, roots, beans and nuts. There was no such thing as refined or processed food. Instead, it was all about fresh, natural produce and lots of protein.
KATE'S WEEKLY MENU
Calories each day - about 1,200
Choose two of these meals a day, plus two snacks
Breakfast (with coffee, tea or plain water)
Tapioca pudding (see my website for recipe) with honey, half a grapefruit or fresh orange juice
Kippers, with baked beans or tomatoes
Bacon, 2 eggs, tomatoes
Omelette with spinach, fresh orange juice
Liver and bacon, half a grapefruit
Snacks (choose two a day)
Handful of unsalted nuts or sunflower seeds, cherries
Small mixed salad with plenty of carrots and peppers
2 hard-boiled eggs
Slice of melon
Banana
Bowl of mango
Lunch
Mixed vegetable or butternut squash soup
30g wedge of cheese, 6 nuts, apple, yoghurt
Piece of cod cooked in foil with carrot strips, peppers, tomatoes. Serve with greens
Hummus dip (chickpea paste), carrot sticks
Chickpea and butter bean burgers, tossed in ground almonds and fried. Serve with salad
Raw vegetables with guacamole dip (avocado blended with lime juice, onion, garlic and peppers)
Avocado and prawn salad
Dinner
Pan-fried mixed seafood (prawns, scallops, etc) with garlic, chilli and spices. Serve with colourful vegetable stir-fry
Baked honey-brushed salmon, coated with crushed pine nuts or almonds. Serve with cauliflower, peas, broccoli
Beef casserole with vegetables - remember not to thicken it with flour. Serve with 3 green veg, parsnips
Vegetable bake - layers of mashed swede, parsnip, broccoli, carrot, etc, topped with crushed pine nuts
Chicken, cashew and mixed vegetable stir-fry
Crispy grilled sardines drizzled in olive oil. Serve with fried sweet potatoes, tomatoes, peppers
Roasted chicken or lamb portion. Serve with sweet potatoes, French beans
To go back to basics, eat more . . .
Fruits and vegetables Packed with anti-ageing phytochemicals, vitamins and fibre.
Lean meats Red meat is full of saturated fat, so choose white-meat chicken or turkey.
Friendly fats Essential Omega-3 fatty acids from fish like salmon, sardines, tuna and mackerel.
Nuts and dried beans Full of high-quality vegetable protein and healthy monounsaturated fats.
Sugar Satisfy your sweet tooth with fruit or honey only, which also keep blood sugars steady.
Limited dairy products Only allow a small amount of milk, and limit butter, cheese and other dairy produce.
Avoid . . .
Bread
Potatoes
Pasta
Rice
Added sugar
Cider a day . .
The ancient Egyptians were the first to realise the medical benefits of Apple Cider Vinegar, using it for many health benefits, including weight loss. Apple Cider Vinegar Diet is £8.99 for 40 capsules from Holland & Barrett stores. You can also order by calling 0870 606 6605 or visiting www.hollandandbarrett.com.