The 5:2 Diet: What it Is and Nutritionist-Approved Recipes (2024)

The 5:2 diet is pretty much the most revolutionary thing to happen in the weight-loss world since Atkins. We've seen more new diets come and go (gluten-, dairy- and soya-free) than we've had hot dinners, but nothing's caused the kind of ripples that 5:2 has in a long time. We're chalking a large part of that success up to the fact that a) it seems to work, and b) it's totally foolproof.

Unlike other meal plans that make you forage high and low for super-niche ingredients or require hours in the kitchen tirelessly meal-prepping, 5:2 (also known as "the fast diet") is easy to follow and can also be done pretty thriftily if you're on a budget.

Intrigued? This fasting diet follows a very straightforward premise: For five days a week, you eat normally, without too much regard for calorie counting. The other two days you stick to a strict 500 calorie intake (Ed note: If you're a man, you get 600 calories). Of course, 500 calories a day is very restrictive and wouldn't be advisable as an everyday long-term weight loss solution, but the claim is that by sticking to it for two days a week, you put your body into "fast mode." There's lots of research to support the health benefits of intermittent fasting: It seems to lead to less muscle loss than other diets, and it may reduce insulin levels.

Then, of course, there's the obvious—by cutting the "active dieting" down to two days a week, that's a heck of a lot less time you have to spend crunching numbers in the kitchen and in the supermarket. But it means you are still eating around 2000 fewer calories each week. You can plan out your fast day meals in advance and what's more, you choose the fast days that suit you. Planning to have a "fast day" on Tuesday, then realize it's happy hour and two-for-one on tacos? No problem; you can simply switch your fast day to whenever it works for you. The only rule? You can't do two fasting days consecutively.

On your fast days, with only 500 calories to play around with, you're going to want to be strategic. Think about your typical working weekday (no one on team Byrdie fancied a weekend fast, thanks very much). Are you more prone to a 4 p.m. slump, or do you crave calories until lunch then feel your appetite slip away a little more? Based on your appetite, choose when in the day to have a bigger meal, and when to have a more spartan snack.

The flexibility and fuss-free nature of 5:2 make it ideal for busy girls (Jennifer Aniston and Miranda Kerr are reportedly fans, and you know those ladies are on their grind), plus the plan has legions of fans who swear by the speed at which it helped them shift pounds.

We asked Kamilla Schaffner, a leading clinical nutritionist, to share her six favorite fast day recipes. Here are her top tips.

Tuna and Slaw Supper

The 5:2 Diet: What it Is and Nutritionist-Approved Recipes (1)

"Take a small piece (120gr) of very fresh tuna and sear on each side for no longer than one minute. Chop half a large avocado into small cubes, add chopped chives, one teaspoon of olive oil and juice of half a lime. Shred about a quarter of a small purple cabbage and add a small amount of chopped fresh rosemary, one tablespoon of grapeseed oil, a tablespoon of rice vinegar and season to taste. The fresh tomato salsa is optional but adds water and some lycopene content."

Total calories: 280kcal, which leaves you 220 calories for the rest of the day.

Chickpea and Steak Dinner

"This is a protein-packed supper that includes both animal and vegan protein. Chickpeas are not only high in vegan protein, but they are also fiber powerhouses vital for digestive health and regularity. The addition of flowering cauliflower is a bonus, but if you don't have any, just use regular broccoli or cauliflower in unlimited amounts—it's all nutrients, fiber, and water!

"Take a regular-size steak (200gr), and cut in half—you'll only use half of it for this dish. I recommend using either rump or fillet cuts, as these are the leanest and give higher protein content per serving. Fry to your desired taste in a small amount of coconut oil. Season and set aside. In a separate pot, heat a tin of ready-cooked chickpeas, drained of water—you can use the whole tin. Add smoky paprika (goes very well with steak), ground coriander and dried turmeric for an added nutrient boost. Serve with steamed or flash boiled cauliflower florets."

Total calories: 405 kcal, with only 95 calories left, factor in a salad for lunch and drink plenty of water to try to help keep you full.

Mixed Yogurt Breakfast

The 5:2 Diet: What it Is and Nutritionist-Approved Recipes (2)

"This is a delight for those who love tropical flavors. Packed full of delicious fruits and protein, you won'teven know it's your fast day! In a cereal bowl, mix four tablespoons of low-fat organic cow's yogurt with two tablespoons of coconut yogurt. Add finely chopped matchsticks of an apple and cubes of 1/2 a papaya. Sprinkle with one teaspoon of finely chopped almonds. If you like coffee, serve with a coconut milk cappuccino."

Total calories: 505 kcal. This blows the calorie budget, so we suggest splitting this into two portions to have late morning and late afternoon.

Savory Breakfast

"This is perfect for those who love a savory kick first thing in the morning. Packed full of protein and fiber, it's a serious contender to a Full English. Mix acan of tuna in water with a small amount of chopped red onion and a handful of chopped rocket salad leaves. Getone tablespoon of low-fat yogurt, one teaspoon of Dijon mustard, a generous helping of Tabasco sauce and a squeeze of lemon or lime juice, season to taste and mix very well. Ina pan, melt 1/2 a teaspoon of coconut oil and flash sauté asparagus and some shiitake (or any) mushrooms. Scoop the tuna salad onto two gluten-free or Paleo high-protein crackers (quinoa or buckwheat)."

Total calories: 310 kcal. You'll be left with 190 calories, so try crudités with salsafor lunch and miso soup with zero-calorie noodles for dinner.

Sushi Fat-Burner Supper

The 5:2 Diet: What it Is and Nutritionist-Approved Recipes (3)

"This is for anyone who's too tired to cook and tends to buy theirdinner somewhere else. Look no further than your local Japanese café (this supper is from Wasabi takeaway box!) or supermarket aisle selling sashimi. Fresh raw fish (salmon and tuna here) is one of the best sources of lean protein and the side of seaweed that is always a part of any Japanese takeaway box is a major fat burner, as its high iodine content willrev up your thyroid and metabolism very gently but effectively. And edamame beans are packed full of fiber and plant-based protein. Did I say it is absolutely delicious too?"

Total Calories: 290 kcal. High in protein, this may help keep you fuller for longer, ideal if you tend to reach forsnacks after dinner.

Egg-White Omelette Breakfast

"This is a big meal, but it's packed full of vital protein and fiber to get you through the fasting day. It's one whole egg, 2 egg whites beaten and fried in a small amount of coconut oil into an omelet. At the very end, add a small amount of dried dill to enhance diuretic properties. The teaspoon of fresh tomato salsa is optional. Add 2 tablespoons of low-fat organic dairy yogurt, with 2 tablespoons of fresh pomegranate seeds and 1 teaspoon of paleo gluten-free granola on the side for a touch of sweetness. I've also added another side of half a grapefruit and a coconut milk cappuccino."

Total calories: 351 kcal. This breakfast meal will set you up for the day and leaves you with enough calories should you need something small later.

The 5:2 Diet: What it Is and Nutritionist-Approved Recipes (2024)

FAQs

What is the new 5 2 meal plan? ›

The New 5:2 approach involves restricting calories to 800 on fasting days, then eating a healthy lower carb, Mediterranean-style diet for the rest of the week. The beauty of intermittent fasting means that as your insulin sensitivity returns, you will feel fuller for longer on smaller portions.

What is 5:2 diet formula? ›

There are different versions, but the 5:2 diet involves eating a normal, healthy diet for five days every week and 'fasting' on the remaining two days. On a 'fast' day, you would typically consume between 500 and 600 calories.

What should I eat on 5.2 fasting days? ›

Here are a few examples of foods that may be suitable for fast days:
  • A generous portion of vegetables.
  • Natural yogurt with berries.
  • Boiled or baked eggs.
  • Grilled fish or lean meat.
  • Cauliflower rice.
  • Soups (for example miso, tomato, cauliflower, or vegetable)
  • Low calorie cup soups.
  • Black coffee.

Who should avoid the 5:2 diet? ›

There are certain groups of people who should not follow the 5:2 diet or carry out intermittent fasting. They include: Children and teenagers. People who have diabetes and who are being treated with insulin.

How much weight can you lose in a month on the 5:2 diet? ›

The 5:2 diet plan aims for a weight loss of 1lb a week for women, and for men you could expect to lose slightly more. The NHS recommend a loss of 1-2lbs a week for healthy and safe weight loss, this amount is also more sustainable.

What happens if I only eat 500 calories a day for a month? ›

A 500-calorie diet can be dangerous without a doctor's supervision. it can lead to malnutrition and other health problems. Healthy weight loss may include limiting food portions, burning calories, and other methods. A 500-calorie diet is an extreme form of a very low-calorie diet (VLCD).

What is the 5:2 diet for seniors? ›

In the 5:2 approach, you eat normally for five days in a row; then for two days in a row, you eat just 400 to 500 calories per day.

What is the best intermittent fasting window to lose belly fat? ›

A 2023 review of research found that the 16/8 method and 16/8 combined with restricting calories were effective strategies for weight control in adults with overweight or obesity. An eating window starting before noon led to greater weight loss than one that began after noon.

How many calories should I eat on a 5:2 diet? ›

Dieters are recommended to consume a 'normal' number of calories for five days and then, for two, non-consecutive days, eat just 25 per cent of their usual calorie total – 500 calories for women and 600 for men.

What can you drink on 5 2 fasting? ›

As with food, your drinks aren't that restricted on the 5:2 diet plan. The diet supports drinking black tea and coffee, herbal teas and diet drinks. (Note: While you can have milk in your hot drinks, it does contribute towards your overall calorie count).

What is the best meal for fasting? ›

Basically, the best foods to eat while intermittent fasting are the best foods to eat no matter what. They include things like avocado, potatoes, cruciferous veggies, fish, seafood, whole grains, nuts, and fermented foods. It's also key to remember water as a part of your daily routine.

What should I drink on fasting days? ›

Generally speaking, while fasting with time-restricted intermittent eating, you don't eat any food at all and only drink beverages with very few calories, such as water or unsweetened coffee and tea without milk. When you're not fasting, it's important to eat a healthy and varied diet that's good for your body.

What are the negatives of 5:2 fasting? ›

But this diet has drawbacks, too. A major one is that you have to severely restrict calories on certain days. “On the fasting days, due to lack of adequate calories, you will most likely be tired, hungry, irritable, and weak,” Gans says.

Is fasting bad for your heart? ›

New research has linked intermittent fasting to an increased risk of dying from cardiovascular disease. The study, presented by researchers at a recent American Heart Association conference, have not yet been published in a peer-reviewed journal.

Is the 5:2 diet now 800 calories? ›

The new 5:2 Diet

Cutting down to 800 calories a day seems to be almost as effective and for some people much more 'doable'.

What is the 5 2 money diet? ›

It takes the principle of the traditional 5:2 diet (where you eat normally for five days and fast for two) and applies it to your spending, so you end up putting the money you save on your fasting days towards your savings.

What is the 5 2 2 optavia plan? ›

On this plan, your body enters a gentle, but efficient fat–burning state. In addition to 5 Fuelings per day eaten every 2 to 3 hours, you will learn another healthy habit – how to make an OPTAVIA Lean & Green™ meal for you and your family.

What is the 2 meals a day meal plan for weight loss? ›

The premise of 2 Meal Day is that by eating just two meals in a day — either breakfast and lunch or lunch and dinner, thus introducing a daily 16-hour fasting period — you can retrain your body to become "fat adapted," meaning you burn stored body fat for energy, rather than being dependent on sugars from food.

How long does the 5:2 diet last? ›

The 5:2 diet is a popular form of intermittent fasting that involves eating regularly for 5 days and eating very little for 2 days. This can offer benefits such as helping with weight loss. However, the diet may not be suitable for everybody.

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