Fresh avocado that has been cut in half


Whether you’re aiming to lose weight or improve your overall health, there are a wide range of diets currently in the public spotlight, each with different health benefit claims and levels of scientific backing. From the low-carbohydrate keto diet and intermittent fasting, to Mediterranean diets, Paleo and the controversial alkaline diet, our expert dietitians take a look at the facts behind these eating plans. Read our analyses of each diet to help make an informed decision on the best regime to suit your needs and ensure you’re getting a healthy balance of nutrients.

Discover nutritious recipes and tips on everything from special diets to the health benefits of your favourite foods on our health hub.

What is a keto diet?

The aim of ketogenic diets is to send the body into a state of ketosis by adhering to a very strict low-carb regime. We look into how keto diets work, and explain the fat-burning process of ketosis. Discover the efficiency of ketones for weight loss and the potential side effects.

Read about the keto diet

What is the Fast 800 diet?

Plate with food on in between cutlery

Developed by Dr Michael Mosley, the Fast 800 diet claims to potentially cut your risk of type 2 diabetes, heart disease and cancer. This involves initially following a low-calorie diet (VLCD), followed by a period of intermittent fasting and then finally, a maintenance phase. Nutritionist, Kerry Torrens, discusses how safe and effective the diet is, and whether it can easily be sustained in the long-term.

Read about the Fast 800 diet

What is the 5:2 diet?

What is the 5:2 diet?

The part-time diet that still allows you to eat chocolate cake. Dieters are recommended to consume a ‘normal’ number of calories five days a week 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. Discover the evidence behind this diet and whether it is a regime to suit you.

Read about the 5:2 diet

What is a plant-based diet?

Veggie burrito bowl filled with vegetables and black beans

A plant-based diet is any diet that focuses around foods derived from plant sources. There are many variations, but this mainly centres on fruit, vegetables, grains, pulses, legumes, nuts and meat substitutes such as soy products. In some cases, a small amount of meat and dish are also consumed. Check out the health benefits of following a plant-based diet and how you can maximise its results.

Read about plant-based diets

What is a flexitarian diet?

Two bowls of vegetable tagine

Flexitarianism or ‘casual vegetarianism’ is an increasingly popular, plant-based diet that claims to reduce your carbon footprint and improve your health with an eating regime that’s mostly vegetarian yet still allows for the occasional meat dish. Follow our tips for getting the nutrients you need on this diet, along with several flexitarian recipe suggestions.

Read about the flexitarian diet

What is the pescatarian diet?

Sea bass with roast courgettes and tomatoes

A pescatarian diet typically includes vegetables, grains and pulses along with fish and other seafood, but generally excludes meat and sometimes dairy. Discover the health benefits of a pescatarian diet and how to get the right nutritional balance following this regime.

Read about the pescatarian diet

What is the Paleo diet?

What is the Paleo diet?

A way of eating that truly goes back to basics, Paleolithic diets are all about eating like our ancestors did – opting for grass-fed meats, an abundance of fruit and veg and other wholefoods like nuts and seeds.

Read about the Paleo diet

What is the carnivore diet?

Pan-Fried Rib-eye steak

Similar to the Paleo diet, this high-fat, low-protein regimen involves consuming predominantly animal products such as meat, fish, eggs, animal fats and small amounts of low-lactose dairy products. Dietitian Emer Delaney breaks down the basic points, potential benefits, and downsides to be aware of.

Read more about the carnivore diet

What is a Mediterranean diet?

Sea bream with ripe tomatoes and chilli

A typical Mediterranean diet includes lots of healthy fats, vegetables, fruits, beans, cereals and cereal products, as well as moderate amounts of fish, white meat and some dairy. Research shows it may reduce our risk of developing conditions like type 2 diabeteshigh blood pressure and high cholesterol, as well as prolonging life expectancy.

Read about the Mediterranean diet

What is the Pioppi diet?

Selection of Mediterranean diet foods such as salmon, olive oil, avocado and nuts

Named after a village in southern Italy where the population are said to enjoy a longer life expectancy, the Pioppi diet is more a lifestyle change than just a diet. Discover which foods are allowed on the Pioppi diet and how it differs from most Mediterranean eating plans.

Read about the Pioppi diet

What is the Dukan diet?

What is the Dukan diet?

Pierre Dukan’s high-protein, low-carb plan attracted an army of celebrity followers when it reached the UK in 2010…

Read about the Dukan diet

What is the Atkins diet?

What is the Atkins diet?

Robert Atkins may not have been the first to harness the appeal of carb-free, but he was certainly the first to bring the concept to the mainstream dieting public…

Read about the Atkins diet

What is a detox diet?

Fresh fruit and vegetables


Nutritionist Kerry Torrens discusses the pros and cons of drastic detox diets.

Read about detox diets

What is the prediabetes diet?

Fruit, tape measure and blood glucose monitor on a surface

This diet is generally recommended for patients who have higher blood sugar levels than normal, but not high enough to be classified as diabetic. Read our advice around the risks of prediabetes and how to manage the condition.

Read about the prediabetes diet

What is a low-FODMAP diet?

What is a low-FODMAP diet?

Have you ever suffered with bloating or abdominal pain? Did you know certain carbs could be contributing to your discomfort? Dietitian Emer Delaney explains the low-FODMAP diet and how it can help.

Read about the low-FODMAP diet

What is the Sirtfood diet?

Chocolate and glass of wine

This plan recommends eating a diet rich in ‘Sirtfoods’ – including dark chocolate, red wine and green tea. Dietitian Emer Delaney offers her opinion…

Read about the Sirtfood diet

What is the dopamine diet?

What is the dopamine diet?

Famed as the Tom Kerridge diet, this weight loss plan claims to improve mood, too. But does the dopamine diet work? Our dietitian investigates.

Read about the dopamine diet

What is the military diet?

Two boiled eggs and soldiers on a plate

Designed as a rapid weight-loss method, the military diet involves dividing your week into three low-calorie days, followed by four healthy eating, non-diet days. Find out what can you eat on the diet and how safe and effective this is for weight loss.

Read about the military diet

What is the cabbage soup diet?

Cabbage soup

The cabbage soup diet has been around for years, and is known as a popular quick-fix way to lose weight in the short-term. It mainly revolves around eating homemade cabbage soup, along with a few additional low-calorie foods such as fruit, vegetables and skimmed milk. We take a closer look at this controversial diet to weigh up whether it really is effective.

Read about the cabbage soup diet

What is a fruitarian diet?

Spread of tropical fruits

There is no definitive description of fruitarianism, but generally followers will eat primarily a plant-based diet, omitting all meat or animal products. It’s generally acknowledged that 55-75 per cent of the diet should be made up predominantly of raw fruit. We take a closer look at this restrictive way of eating and whether it’s safe to follow in the long-term.

Read about the fruitarian diet

What is the raw food diet?

What is a raw food diet?

In this plant-based diet that claims to increase the enzymes in the body, refined, canned and chemically-processed foods are out – as well as heating above 48C.

Read about the raw food diet

What is the DASH diet?

Cod one-pot in spoon

Diagnosed with high blood pressure and advised to cut back on your salt intake? Nutritionist Kerry Torrens takes a closer look at the DASH diet – what it is, how it may help and what its limitations are.

Read about the DASH diet

What is the macro diet?

Two bowls of teriyaki chicken with rice and pad choi

Rather than solely focusing on counting calories, this increasingly popular diet places an emphasis on tracking the three main macronutrients: carbohydrates, proteins and fats. Individuals on the diet are able to consume any foods that fit within their daily macronutrient (‘macro’) and energy requirements. Dietitian Tai Ibitoye explains how healthy this is and how to count your macros.

Read about the macro diet

What is the planetary health diet?

Cloth bag full of vegetables, in front of door

A flexitarian-style diet, the principle goal of the PHD is to pave the way for a sustainable food system which supplies healthy, nutritious food to an expanding global population. We delve into what the diet involves, where it originated and what it means for us and the planet.

Read about the planetary health diet

What is a low-histamine diet?

Two cups of ginger and lemon tea

When our levels of histamine get too high or we can’t break it down properly, it can start to affect normal bodily functions which may lead to allergy-like symptoms, including itching, sneezing, headaches, joint pain, an irritable bowel and nausea. Read our tips for managing these by eliminating certain high-histamine foods in your diet.

Read about the low-histamine diet

What is the alkaline diet?

Spread of vegetables and fruits

This highly controversial diet is based on the theory that you can change the pH balance of your body and blood through the food that you eat. By balancing an ‘acid excess’, advocates claim this diet can help to alleviate conditions like arthritis, osteoporosis, kidney and liver disorders, and even cancer. We look into whether there is any scientific evidence to support these health claims.

Read about the alkaline diet

What is the apple cider vinegar diet?

Apples and apple cider vinegar

Famed as a centuries old health tonic, apple cider vinegar is seen by some as a weight loss aid. We asked a dietitian the health benefits to apple cider vinegar, how much you should consume and who should avoid the diet.

Read about the apple cider diet

What is the Banting diet?

Salmon salad on a bowl

The first of many low-carb programmes, the Banting diet promotes the use of fat stores as fuel. It is split into four phases and involves a colour coded system of food – green, orange and red. Discover whether this diet is safe and effective for weight loss.

Read about the Banting diet

Which diet would you like us to take a look at next? Let us know in the comments below…



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