Pescatarian diet: Everything you need to know about the pescatarian diet

Pescatarian Diet

The Pescatarian diet is on the upswing as more and more of us turn to a diet free from meat, eggs and other animal products.

Tempted to follow a Pescatarian diet? A Pescatarian diet is a red and white meat free diet, that includes fish recipes (opens in new tab) and seafood – as well as plenty of fruit and vegetables. Research suggests eating less meat is better for your health and can help you live longer. (opens in new tab) Avoiding red meat also has added environmental benefits, so more people than ever are limiting their meat intake and opting for the Pescatarian or even a vegan diet (opens in new tab).

What is the Pescatarian diet?

“A Pescatarian diet is a diet which excludes meat and poultry but includes plant foods, fish and seafood, dairy and eggs,” says nutritionist Jenna Hope (opens in new tab). New figures by Mintel suggest 16 per cent of Brits currently follow a Pescatarian diet, making it more popular right now than being vegan.

“Consumers are introducing more variation into their diet, with many opting to add fish into their lifestyles as consuming certain fish can add protein and keep saturated fat intake down,” says leading TV nutritionist Lily Soutter, an ambassador for Princes (opens in new tab). “Eating certain oily fish, such as mackerel and salmon, provides the body with increased omega 3 fatty acids. Omega 3 helps the heart to function effectively and swapping red meat for fish can help to reduce your saturated fat intake. This has a knock-on effect of helping to keep your blood cholesterol at a normal level.”

The word ‘pescatarian’ is a mix of the Italian word ‘pesce’ meaning fish, and the word vegetarianism. So, a Pescatarian diet includes lots of vegetarian recipes, (opens in new tab) but with the addition of fish. It is also very similar to the Mediterranean diet. (opens in new tab)

Why a Pescatarian diet is better for the environment

“Reducing meat consumption has been shown to have a beneficial environmental impact,” says Jenna. In fact, findings from an EAT Lancet study (opens in new tab) found foods that harm our health are also those that most harm the planet.

The most damaging food of all is red meat, like beef and lamb. For us, eating too much red meat can increase your risk of serious illnesses, like cancer, heart disease and stroke, and when it comes to our environment the figures are alarming. The study found, for example, that producing just 100g of beef results in 105kg of greenhouse gases – those emissions that are responsible for the greenhouse effect which has led to global warming. That’s almost as many greenhouse gases as flying from London to Paris would produce.

“In order to optimise environmental impact it’s recommended to switch animal-based foods for plant food sources,” says Jenna. “The Pescatarian diet may be slightly more beneficial for animal welfare although it still encompasses dairy and animal-based products. Therefore, individuals with an ethical concern should generate their own views.”

What can you eat on the Pescatarian diet?

Pescatarian’s can eat any kind of fish or seafood, including salmon (opens in new tab), tuna (opens in new tab), prawns (opens in new tab), and lobster (opens in new tab). “You can also consume food derived from plants, dairy and eggs,” says Jenna. “It just excludes meat and poultry foods.”

A Pescatarian’s diet usually includes plenty of vegetables, fruit, legumes, potatoes, rice, pasta, beans, pulses and nuts.

Like vegetarians, Pescatarian’s also eat dairy and eggs, including cheese, yogurt and milk. 

Canned foods also count when it comes to a Pescatarian diet. “If you’re looking to reduce your meat intake, canned fish is a simple and efficient way to help keep your protein levels up without having to spend hours preparing fish from the counter," says Lily. "It can also extremely cost effective when compared with some fresh fish.” Canned tuna, salmon, mackerel and sardines are the most commonly available choices.

Canned fish and vegetables will save you money, and you'll not miss out on any nutritional benefits.

The Pescatarian diet can be very healthy

Getty Images

Can you lose weight on the Pescatarian diet?

Strictly speaking, the plant-based diet is not designed to help you lose weight. (opens in new tab) However, plant-based diets can aid weight loss. You may see drastic weight loss results if you follow a diet such as the 3-day Military diet (opens in new tab), or the 5:2 diet, however these diet plans are not meant for the long term.

Rather, the Pescatarian diet promotes a sensible and healthy eating lifestyle. Though, you will be consuming far more vegetables than meat, and vegetables tend to have fewer calories and less fat. So, you’ll be eating a diet naturally lower in calories and fat intake.

“Excluding meat and poultry will not necessarily lead to weight loss,” says Jenna. “Weight loss comes down to what you are eating rather than what you’re not. It is possible to obtain weight loss on a Pescatarian diet although simply adopting a Pescatarian diet will not lead to weight loss.”

Other tips to lose weight while on the Pescatarian diet are avoiding frying your fish in oil, rather opt for healthier methods such as grilling or steaming your seafood.

A Pescatarian diet meal plan

Following a Pescatarian diet to help the environment? Try to buy local ingredients, which haven't used fossil fuel to reach the table. It's also important to cut back or stop buying fruit and veg wrapped in plastic, cook in bulk and eat leftovers, and turn food scraps into compost for your garden.

If you are looking for inspiration for meat-free meals, we have put together some of our favourite pescatarian diet meals to get you started. They are cheap, simple and can be prepared in no time. The list includes creative curries, homemade fish sauces (opens in new tab), meat-free pasta bakes and delicious breakfast ideas.


Eggs Florentine (opens in new tab) with spinach and smoked salmon

Pancakes with strawberries and coconut cream

Sprouted amaranth porridge (opens in new tab) with grilled banana


Broccoli and salmon pasta (opens in new tab)

Carrot and butternut squash soup (opens in new tab)

Joe Wicks’ Lean in 15 Goan fish curry (opens in new tab)


Spinach feta and olive frittata (opens in new tab)

One-pot tuna pasta puttanesca (opens in new tab)

Creamy spinach and haddock fillets (opens in new tab) with rice

Pescetarian diet

Joe Wicks’ lentil Bolognese is a veggie twist on the classic spaghetti Bolognese, and it’s perfect for those who are trying to cut down their meat consumption

What are the benefits of a Pescatarian diet?

Following a Pescatarian diet has great health benefits. “But it’s dependant on the diet quality,” says Jenna. “A diet high in refined sugars and ultra-processed food could fit within the realms of a Pescatarian diet. Equally a diet rich in wholefoods, good quality fish, fruits, vegetables, nuts and seeds is also a Pescatarian dietary pattern. The latter would be associated with better general health.”

  • Plant-based diets are good for anti-inflammation and reducing the risk of diabetes and obesity.
  • People who eat more fish and less meat are likely to be protected against cancers affecting the colon and bowel.
  • A Pescatarian diet is easier to follow compared to a vegetarian diet, as you can be sure you will be consuming enough protein (opens in new tab).
  • People who consume fish also have lower blood pressure and better circulation, as well as fewer heart problems.
  • Consuming fish, especially fatty fish, such as Albacore tuna, wild salmon, mussels and anchovies, increases your intake of omega-3 fatty acid. Fatty fish is an essential food to eat during pregnancy (opens in new tab), as they're great for improving eye health, fighting depression, and promoting brain health.

A Pescatarian diet can also help you sleep. A nationwide survey by Sealy UK (opens in new tab) set out to identify the link between food type and sleep quality. Out of all the most-popular diets right now, the Pescatarian diet came third. “Dietary factors such as omega-3 fats found predominantly in oily fish are believed to be related to melatonin and there is some, albeit limited, scientific evidence in children showing a positive link,” says registered nutritionist Dr Tom Hill.

What are the cons of a Pescatarian diet?

You’ll be pleased to know, there are hardly any drawbacks to the Pescatarian diet.

However, fish does contain high levels of mercury, and for this reason pregnant women, breast-feeding (opens in new tab) women, and women planning to conceive should limit their intake. Plus, high levels of mercury can have a negative effect on our nervous systems. Fish to avoid with high levels of mercury including king mackerel, swordfish, shark and tuna.

The NHS advises consuming three to four portions of fish a week, the rest of the week you could opt for vegetarian meals.

Like all diets, it is important to ensure you are receiving the right nutrients. The lack of red meat from your diet may mean you could lose sources of iron, therefore be sure to include vegetables and beans in your diet that are high in iron, such as kidney beans, spinach and broccoli.

“The diet has to be suitable for the individuals,’ says Jenna. “Some people may find it causes social challenges of eating out and going to friends for dinner. Other people may enjoy the taste of meat and poultry and consequently cutting it out may be unsustainable. From a health perspective it is possible to obtain adequate nutrition on a wholefood Pescatarian diet.”

If you are worried about the changes you are making to your diet it is good to contact your GP beforehand.

Cookbooks for a pescatarian diet

The Flexible Pescatarian by Jo Pratt

Pescatarian Diet

Best for: Quick and simple recipes

Why we rate it: Not only are the recipes easy to follow, but they look so delicious even hardcore meat eaters will be tempted.

COST: £20

The Truly Healthy Pescatarian Cookbook by Nicole Hallissey

Pescatarian Diet

Best for: Losing weight

Why we rate it: Written by a registered dietitian nutritionist, these dishes taste great and will fill you up.

COST: £15.49

The Easy 5-Ingredient Pescatarian Cookbook by Andy DeSantis

Pescatarian Diet

Best for: Saving money

Why we rate it: With just five or so main ingredients per recipe, you won’t be left with random ingredients to use up afterwards.

COST: £13.17

Faye M Smith
Senior Health and Lifestyle Writer

Faye M Smith is a Senior Health And Lifestyle writer working across Woman & Home, Feel Good You, Woman’s Own and Woman magazine.  Having gained an NCTJ postgraduate diploma, Faye has worked for 15 years in journalism, covering a range of lifestyle topics for companies including the BBC, Press Association, News UK and Hachette.