Fish provides high-quality protein, vitamins and minerals, while oily fish such as salmon, sardines, trout and mackerel supply long-chain omega-3 fats. For most adults, a practical target is two portions of fish a week, including one portion of oily fish, while choosing a variety of lower-mercury options.
What are the main benefits of eating fish?
Fish is one of the simplest additions you can make to a balanced diet — and one of the most rewarding. It’s a naturally rich source of high-quality protein, supplying the amino acids your body uses to maintain muscle, repair tissue and stay energised through the day. Unlike many protein sources, fish tends to be light and easy to digest, which makes it a comfortable choice for most people, including during recovery, pregnancy or busy weeks when you want nourishing meals without heaviness.
What really sets fish apart is its omega-3 content. Oily fish such as salmon, mackerel, sardines and trout are among the best natural sources of EPA and DHA — the omega-3 fatty acids most closely associated with supporting heart, brain and eye health. These are fats the body can’t produce efficiently on its own, so getting them through food matters. Alongside omega-3s, fish delivers vitamin D, vitamin B12, iodine and selenium — nutrients that support everything from immune function to a healthy metabolism, and that many people fall short on. Adding fish to your week is a gentle, practical way to help close those common gaps.
How much fish should you eat, and how to start
A widely shared guideline is to aim for around two servings of fish a week, with at least one of them being an oily fish like salmon or sardines. A single serving is roughly the size of your palm. This is an easy, realistic target — and you don’t need to overhaul your meals to reach it. Swapping one or two dishes a week for a fish option is often enough to notice a difference in how varied and satisfying your diet feels.
Getting started can be as simple as flaked salmon over a salad, canned sardines on wholegrain toast, or a light white fish baked with lemon and herbs. Canned and frozen fish count too — they’re affordable, convenient and just as nutritious, which makes them a smart everyday choice. If you’re pregnant, breastfeeding or managing a specific health condition, it’s worth choosing lower-mercury options and checking in with a professional, since individual needs vary. Fish isn’t a cure-all, but as part of a colourful, balanced plate it’s one of the most enjoyable ways to support your long-term wellbeing. If you’d like a plan tailored to your body and goals, that’s exactly the kind of thing we work on together at De Clear.
How much fish should you eat?
The NHS recommends at least two portions of fish a week, including one portion of oily fish. The American Heart Association likewise recommends two servings weekly, particularly fatty fish. Needs differ during pregnancy and childhood; FDA/EPA guidance advises two to three weekly servings from lower-mercury choices for people who are pregnant or breastfeeding.
Frequently asked questions
Which fish are rich in omega-3?
Salmon, sardines, trout, herring and mackerel are common oily-fish sources of EPA and DHA. Nutrient content varies by species and portion.
Should pregnant people avoid fish?
No. Fish can provide important nutrients during pregnancy, but species and preparation matter. Follow local lower-mercury guidance and avoid raw or undercooked fish during pregnancy.
Is fried fish equally beneficial?
Fish still provides protein, but baking, grilling or steaming generally adds less fat than frying or cooking in batter.
Sources
- NHS: Fish and shellfish nutrition
- American Heart Association: Fish and omega-3 fatty acids
- FDA/EPA advice about eating fish
This article is for general education and does not replace personalised medical or nutrition advice. Recommendations may differ with pregnancy, allergies, medical conditions or medication use.
