A healthy diet is not just about eating enough protein or cutting down on calories. The human body requires a wide variety of nutrients, including vitamins, minerals, healthy fats, carbohydrates, protein and fibre, to perform its everyday functions.

Different nutrients have different roles. Vitamin A supports normal vision and immune function, while B vitamins are involved in processes that help the body release energy from food and support the nervous system. Vitamin C contributes to normal immune function, collagen formation and wound healing. Vitamin D is important for bones and muscles, while vitamin E acts as an antioxidant that helps protect cells from oxidative damage.

No single food can provide every nutrient the body requires in ideal amounts. This is why dietary variety is important. Fruits, vegetables, legumes, nuts, whole grains and other nutritious foods can complement one another to create a balanced eating pattern.

Here are six nutrient-dense foods that can be considered as part of a varied diet.

1. Almonds Provide Vitamin E, Magnesium and Healthy Fats

Almonds are small but nutritionally dense. They provide protein, dietary fibre, magnesium and vitamin E, along with unsaturated fats.

Vitamin E has antioxidant properties, while magnesium contributes to several normal functions in the body, including muscle and nerve function.

Almonds also provide fibre, which can support digestive health and contribute to a feeling of fullness.

Because nuts are energy-dense, portion size matters. A small handful can be incorporated into breakfast, snacks or meals instead of consuming very large quantities.

Unsalted varieties can be a useful option for people trying to keep their sodium intake under control.

2. Apples Are an Easy Way to Add Fibre and Plant Compounds

Apples are widely available, convenient and easy to include in everyday meals.

They provide dietary fibre, including soluble fibre, as well as vitamin C and several naturally occurring plant compounds.

Eating an apple with its edible skin can provide more fibre than removing the skin. However, the fruit should be washed properly before consumption.

Fibre supports normal digestive function and can contribute to satiety, making whole fruits a useful alternative to many highly processed snacks.

Whole apples are also nutritionally different from apple juice because juicing can substantially reduce the fibre content.

3. Beans Combine Plant Protein With Fibre and Minerals

Beans can be particularly valuable for people looking to increase their intake of plant-based protein.

Depending on the variety, beans can provide protein, fibre, iron, magnesium, potassium, phosphorus, zinc and folate.

This combination makes legumes a versatile component of a balanced diet.

Dietary fibre can support digestive health, while iron is required for normal formation of haemoglobin and the transportation of oxygen in the body. Folate plays an important role in cell division and other essential biological processes.

Beans can be incorporated into curries, soups, salads, wraps and other dishes, making them relatively easy to add to different eating patterns.

4. Blueberries Offer Antioxidants Along With Vitamins

Blueberries are particularly known for their naturally occurring plant pigments called anthocyanins, which give the berries their distinctive blue-purple appearance.

They also provide nutrients including vitamin C, vitamin K and dietary fibre.

Anthocyanins belong to a broader group of plant compounds with antioxidant properties. Antioxidants are involved in protecting cells against oxidative stress.

Fresh or frozen blueberries can be added to yoghurt, oatmeal, smoothies or other foods. However, consumers should be mindful of blueberry-flavoured processed products that may contain substantial amounts of added sugar.

Whole berries generally offer a more straightforward way to obtain their fibre and nutrients.

5. Broccoli Delivers Vitamin C and Other Essential Nutrients

Broccoli is a cruciferous vegetable that can contribute several important nutrients to the diet.

It contains vitamin C, vitamin K, folate and fibre, along with carotenoids and other naturally occurring plant compounds. It also provides smaller amounts of several minerals.

Vitamin C supports immune function and also helps the body absorb non-heme iron found in plant foods.

Broccoli can be steamed, lightly cooked, roasted or incorporated into soups and mixed vegetable dishes. Cooking method and duration can influence the amount of certain heat-sensitive nutrients retained in vegetables, so excessive cooking is not always necessary.

6. Spinach Packs Several Nutrients Into a Small Serving

Leafy green vegetables are an important part of a varied diet, and spinach is one popular example.

Spinach provides nutrients including folate, vitamin K, vitamin A precursors, vitamin C, iron and potassium.

It also contains plant compounds such as beta-carotene, lutein and zeaxanthin. Lutein and zeaxanthin are carotenoids found in the eye and have been widely studied for their role in eye health.

Spinach can be consumed in salads where appropriate or incorporated into cooked dishes, soups, dals, curries and other meals.

It is worth remembering that while spinach contains iron, the body absorbs plant-based iron differently from iron found in animal foods. Combining iron-containing plant foods with a source of vitamin C can help improve absorption.

Why Dietary Variety Matters More Than One 'Superfood'

Foods such as almonds, blueberries, broccoli and spinach are sometimes marketed as "superfoods", but nutrition does not depend on any single ingredient.

A healthy eating pattern is generally built around variety.

Someone who eats large amounts of one nutrient-rich food but lacks diversity elsewhere may still fail to obtain sufficient amounts of other essential nutrients.

A balanced diet can include different coloured fruits and vegetables, legumes, nuts and seeds, whole grains and appropriate protein sources. Dairy or suitable alternatives can also contribute important nutrients depending on an individual's dietary pattern.

Whole Foods Can Be a Practical Starting Point

Highly processed foods can sometimes provide plenty of calories while offering relatively little fibre or micronutrient variety. In contrast, minimally processed fruits, vegetables, beans and nuts can provide multiple nutrients in the same serving.

This does not mean that every meal needs to contain all six foods listed above.

Instead, they can be rotated throughout the week alongside other nutritious choices. For example, fruit can be included at breakfast, beans can form part of lunch, nuts can be used as a snack and leafy vegetables can be added to dinner.

Build a Balanced Plate Instead of Chasing Individual Nutrients

The body needs a combination of nutrients rather than a single vitamin or mineral in isolation. Almonds, apples, beans, blueberries, broccoli and spinach can all contribute useful nutrients, but they should form part of a broader, balanced diet.

Individual nutritional needs can vary according to age, activity level, pregnancy, dietary preferences and medical conditions. People with specific nutritional deficiencies, allergies or health conditions should seek personalised guidance from a qualified healthcare professional or registered dietitian rather than relying solely on individual foods or supplements.

The simplest approach for most people is to focus on variety, balance and minimally processed foods while ensuring that different food groups are represented regularly in everyday meals.