Nutrition

"Nutrition" is the intake of food and nutrients for health, like how it affects your metabolism, cardiovascular system, brain, and prevents (or causes) other diseases. This page brings together evidence-based resources on diets, nutrients, and healthy eating. We cover macronutrients, micronutrients, different diets, and the role of food in supporting health. We focus on getting people to understand how nutrition works, rather than promoting fad diets that don't work. So, whether you want to improve the quality of your diet, understand how it affects your health, or compare different approaches, we're here to help.

FOOD FOR HEALTH

What to Eat for Better Sleep

Diets rich in certain nutrients can support better sleep, while others don’t — eating the right things is one of the simplest ways to improve your sleep.
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Is Hara Hachi Bu Healthy?

An overview of hara hachi bu, the Japanese practice of eating to 80% fullness, highlighting its role in weight control, health and longevity.
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What Happens to Your Body When You Fast?

The hour-by-hour changes in metabolism, insulin, autophagy, and brain function: understand the body’s response to periods without food.
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Body Recomposition Diet: What to Eat

For body recomposition, good nutrition is crucial because you're asking your body to simultaneously support two processes: lose fat and gain muscle.
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Health Benefits of Oily Fish

An overview of oily fish as a superfood, highlighting heart, health, and brain benefits. Get the recommended servings, what to eat, and practical tips to get omega-3-rich fish in your diet.
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Health Benefits of Olive Oil

An overview of olive oil as a superfood, highlighting cardiovascular and metabolic benefits, recommended daily intake, and practical tips for including extra virgin olive oil in your diet.
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Nutrition is the process by which the body takes in and uses food for growth, keeping your cells alive, and repairing them. It covers both the nutrients found in foods (like proteins, carbohydrates, fats, vitamins, minerals, phytonutrients) and how your body digests, absorbs, and uses them to maintain your health and bodily function.

The six main nutrient categories are: carbohydrates, proteins, fats, vitamins, minerals, and water. The macronutrients (carbohydrates, proteins, and fats) provide energy and are needed in larger quantities, while micronutrients (vitamins and minerals) are required in smaller amounts but are still critical for your health.

"Superfood" is a marketing term, not a scientific one. It's typically used to describe "nutrient-dense" foods like berries, leafy greens, salmon, and nuts. While these foods are very healthy and nutritious, no single food provides all essential nutrients by itself. A varied, balanced diet is more important than focusing on any individual "superfood" alone.

Common signs include stubborn fatigue, frequent illnesses, slow healing or recovery, brittle hair and nails, unexplained weight changes, and difficulty concentrating. Deficiencies in certain nutrients have specific symptoms like "anaemia" (due to low iron), muscle weakness (due to low protein), or bleeding gums (due to low vitamin C).

Essential daily nutrients include high-quality proteins (containing essential amino acids), healthy fats (containing essential fatty acids), some carbohydrates (for energy), fibre, 13 different vitamins and minerals, and adequate water. Individual needs vary based on age, sex, your activity level, and health status.

MEDITERRANEAN DIET

Mediterranean diet for weight loss and health

A practical overview of the Mediterranean diet, highlighting its benefits for fat loss, long-term health, and sustainable eating habits.
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7 pantry essentials for the Mediterranean diet

Seven pantry essentials for the Mediterranean diet. Learn how simple ingredients can support health and adherence to a balanced diet.
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5 high protein Mediterranean diet recipes under $1

Get five high-protein Mediterranean dishes costing under $1. Budget-friendly, nutritious meals can be simple, delicious, and healthy.
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PLANT-BASED EATING

Does an Apple a Day Keep the Doctor Away?

A review of the health benefits of eating apples daily. Learn whether the classic “apple a day keeps the doctor awy” advice holds true.
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How Many Vegetables Should Be on Your Plate?

Learn the half-plate rule for eating more vegetables. Evidence-based guide with three filling recipes to help you meet daily vegetable targets.
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The 3 Healthiest Vegetables Around

Discover the 3 healthiest vegetable groups backed by research and some great recipes: cruciferous vegetables, leafy greens, and alliums.
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ULTRA PROCESSED FOOD

How to avoid ultra processed food

A practical guide to reducing ultra-processed foods, offering strategies and flexible meal swaps that support healthier eating habits.
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The 3 worst diets for your health

A look at three diets to avoid, explaining how crash diets, fad diets, and ultra-processed food undermines health and body weight.
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Ultra Processed Food: What is it?

A guide to ultra-processed foods and the NOVA classification. Learn how to identify these products and make healthier choices without confusion.
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Why are Ultra Processed Foods So Popular?

An overview of why ultra-processed foods became widespread, exploring convenience, cost, lifestyle changes, and food environments.
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Health Risks of Ultra Processed Foods

An overview of ultra-processed foods and health. In this article we'll look at the links to obesity, heart disease, and other health outcomes.
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