You do not need expensive supplements, unusual ingredients or a restrictive diet to eat for healthy aging.
A longevity-friendly diet is built around ordinary, nutritious foods eaten consistently over time.
The World Health Organization (WHO) emphasizes four principles of healthy eating: adequacy, balance, moderation and diversity.
What does this mean for your everyday meals?
What Should You Eat More Often?
Build your meals around a variety of minimally processed foods.
Vegetables and fruits: WHO recommends at least 400 grams daily for adults. Choose different colours and varieties throughout the week.
Whole grains: Include oats, wholegrain bread, brown rice or other whole grains regularly.
Legumes: Beans, lentils and chickpeas provide fibre, protein and essential nutrients.
Nuts and seeds: Choose unsalted varieties as part of a balanced diet.
Healthy fats: Prefer olive oil, rapeseed oil and other sources of unsaturated fats over frequent use of butter and other saturated-fat-rich foods.
Adequate protein: Include suitable protein sources such as fish, eggs, dairy products, soy foods or legumes. Protein needs may increase with age.
What Should You Limit?
WHO recommends limiting free sugars, excess salt, saturated fats and trans fats.
Practical changes include:
* Replacing sugary drinks with water. * Choosing less salty packaged foods. * Eating processed meat less frequently. * Using unsaturated oils instead of butter for many meals. * Choosing whole fruit more often than fruit juice.
You do not need to eliminate every favourite food. Your overall eating pattern matters more than occasional exceptions.
Do You Need to Follow the Mediterranean Diet?
Not necessarily.
The Mediterranean diet is a well-studied example of a healthy dietary pattern, but similar principles can be followed using foods from different cultures.
A meal with vegetables, beans, whole grains and an appropriate protein source can be nutritious regardless of its country of origin.
The important factors are food quality, variety and consistency.
Does Your Diet Need to Change With Age?
Yes, sometimes.
Older adults may need particular attention to protein intake, hydration and adequate energy consumption.
Preventing undernutrition and preserving muscle strength are important for maintaining independence.
A diet designed for weight loss in middle age may not be appropriate for a frail older adult.
Individual medical conditions can also affect nutritional requirements.
Based on Research
World Health Organization. Healthy diet. January 2026. https://www.who.int/news-room/fact-sheets/detail/healthy-diet
