Nutrition Basics for Health

Zoe Mohan, BHSc, MD(c)

Jun 15

2 min read

What is Nutrition?

Nutrition is how your body gets energy and the building blocks it needs to function. The food you eat every day affects your energy, mood, immune system, and long-term health [1].

The Key Nutrients

Your body needs a balance of:

Carbohydrates: Your main energy source. Choose whole grains, fruits, and vegetables over sugary or processed options.
Proteins: Build and repair muscles and cells. Found in meat, fish, eggs, beans, and nuts.
Fats: Support brain health and hormone production. Choose unsaturated fats (olive oil, avocados, fish) over saturated or trans fats.
Vitamins and minerals: Essential for immune function, bone health, and hundreds of body processes.
Water: Every cell in your body needs it. Most adults need 8+ cups per day.
Fibre: Supports gut health and lowers disease risk. Found in whole grains, vegetables, and legumes [2].

What a Healthy Plate Looks Like

Half your plate: vegetables and fruits
One quarter: whole grains (brown rice, oats, whole wheat)
One quarter: protein (lean meat, legumes, tofu, fish)
A side of low-fat dairy or fortified alternatives [3].

Who Is at Risk for Poor Nutrition?

Anyone can develop nutritional gaps. Higher risk groups include:

Older adults
People with digestive conditions
Those with limited food access
People on restrictive diets without guidance
Pregnant or breastfeeding individuals [4].

Benefits of Good Nutrition

Research shows healthy eating patterns are linked to a 20% reduction in early death and lower rates of cancer, heart disease, and diabetes [5].

When to Seek Help

See a registered dietitian if you have a chronic condition, are pregnant, have unexplained weight changes, or feel confused about what to eat.

Frequently Asked Questions (FAQs)

Do I need supplements?

Most people can meet their needs through food. Ask your doctor before starting supplements.

Is one diet best for everyone?

No. Healthy eating looks different depending on culture, health conditions, and personal needs.

Sources:

Rattan SIS, Kaur G. Nutrition, Food and Diet in Health and Longevity: We Eat What We Are. Nutrients. 2022;14(24):5376. Published 2022 Dec 18. doi:10.3390/nu14245376
Morris AL, Mohiuddin SS. Biochemistry, Nutrients. [Updated 2023 May 1]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. Available from: https://www-ncbi-nlm-nih-gov.proxy.queensu.ca/books/NBK554545/
Jodkiewicz M, Malinowska J, Marek-Woźny K. A Comparative Analysis of Graphic Models for Enhancing Nutrition Education. Nutrients. 2025;17(12):1947. Published 2025 Jun 6. doi:10.3390/nu17121947
Saunders J, Smith T. Malnutrition: causes and consequences. Clin Med (Lond). 2010;10(6):624-627. doi:10.7861/clinmedicine.10-6-624
Cena H, Calder PC. Defining a Healthy Diet: Evidence for The Role of Contemporary Dietary Patterns in Health and Disease. Nutrients. 2020;12(2):334. Published 2020 Jan 27. doi:10.3390/nu12020334

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Medical Disclaimer: HealthDecoded content is for education only and does not replace professional medical advice. Always seek guidance from a qualified healthcare provider.