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Living a long life is something many people want for themselves and others. However, it isn’t just about adding years. Health and longevity are also about quality of life.

For example, being around until 85, struggling with mobility issues and cognitive decline, doesn’t sound particularly inviting. However, living until 85, with healthy mobility and excellent cognitive function, is much more appealing. But how do you do that?

Longevity research increasingly shows that what you eat plays a central role in how you age. It can influence everything from heart health and brain function to energy levels and lowering the risk of disease. Read on for the best foods for health and longevity so you can live the life you love - no matter what your age.

What does “health and longevity” actually mean?

Longevity refers to lifespan (how long you live). Healthspan refers to how long you live in good health. For example, free from chronic illness or disability. Modern nutrition research focuses increasingly on healthspan, because living longer only matters if those years are active and well.

The science behind longevity and diet

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Large population studies consistently show that certain dietary patterns are associated with longer life expectancy and lower disease risk. These include the Mediterranean diet, plant-based diets, and diets with minimally processed foods. These diets are thought to contribute to lifespan because they:

  • Reduce chronic inflammation
  • Support cardiovascular health.
  • Improve metabolic function.
  • Protect cells from oxidative damage.
  • Support gut microbiome diversity.

The best foods for health and longevity

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If you’re already interested in a healthy lifestyle, you may be familiar with some of the following food groups. However, we’ve included specific foods that many people overlook that are essential to include in your diet. Let’s get into it.

Olive oil

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Extra virgin olive oil is a cornerstone of longevity-focused diets, particularly the Mediterranean diet. It contains monounsaturated fats and polyphenols, which have anti-inflammatory and antioxidant properties.

A 2022 Harvard study, High olive oil consumption associated with longevity, looked into the link between olive oil and life expansion. They discovered that about half a tablespoon of olive oil a day could reduce the risk of death by 19%. The percentage increased even more (up to 34%) when people used olive oil in replacement of butter, margarine, or mayonnaise.

Fermented foods

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Fermented foods (also known as probiotics) are gaining in popularity due to the critical brain-gut connection. The 2026 review, The role of fermented foods in healthy longevity, concluded that consuming fermented foods may have anti-ageing effects.

Scientists believe this is due to regulating and diversifying the gut’s microbiota. It’s thought that “good” gut bacteria reduce oxidative stress and provide anti-inflammatory effects for healthier ageing.

Fermented foods include:

Berries

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Acai berries, blueberries, raspberries, and strawberries are packed with polyphenols, particularly anthocyanins, which give them their vibrant colours. These compounds are bursting with antioxidant and anti-inflammatory effects to reduce oxidative stress - one of the biological processes linked to ageing.

2019 research spotlights blueberries in particular, concluding that the berries promote cognitive performance and mood. Cognition is essential for quality of life, and who doesn’t want to feel good too?!

Green tea

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Green tea is noted throughout history for its health benefits and connection to anti-ageing. A 2026 research paper notes that studies repeatedly link the magical plant to many health benefits. These include better brain cognition, improved heart health, muscle maintenance, and regulating metabolism. Read more about metabolic health to understand why it’s important for your body and mind.

Sip a cup of green tea in replacement or as well as a daily cup of coffee to ensure you’re drinking it regularly. The tea has the added bonus of being beneficial for your dental and oral hygiene. This is due to its antimicrobial, anti-inflammatory, and antioxidant properties.

Whole grains

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Unlike refined grains, whole grains retain their bran and germ, which contain most of the nutrients and fibre. Fibre plays a critical role in longevity because it supports healthy digestion, blood sugar regulation, gut microbiome diversity, and cholesterol control.

An article on Whole Grains and Health concluded that whole grains may reduce the risk of developing type 2 diabetes, and can lower high blood pressure and regulate weight. It could also reduce the chance of colorectal (bowel) cancer.

Choose whole grains such as oats, quinoa, buckwheat, wheat bran, and other whole wheat products. Legumes, such as beans, lentils, and chickpeas, are also a great wholegrain option. Lentils in particular have been shown to preserve and improve cognitive health.

Spinach (and other leafy greens)

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Spinach has long been known to make you strong and healthy, but why? 2025 research on the Nutritional and health beneficial properties of spinach, refers to spinach as a “nutritional powerhouse.” It’s packed with vitamins A, C, K, and folate, and contains essential minerals like iron, calcium, magnesium, and potassium.

It provides an overwhelming amount of health benefits, including antioxidant, anti-inflammatory, anti-cancer, and anti-diabetic effects. It also improves heart and gut health.

Other leafy greens like kale and Swiss chard are also extremely nutrient-dense and contribute to overall health and longevity. So, adding them as a side salad, choosing leafy green recipes, or making green smoothies are fantastic additions to your diet.

Recipe idea: Spinach Wraps

Almonds, walnuts, & pumpkin seeds

Nuts and seeds are associated with improved heart health and reduced risk of chronic disease. But there’s a spotlight in the scientific community on almonds, walnuts, and pumpkin seeds.

This may be because they contain all 9 essential amino acids. Amino acids are crucial for making protein, which the body uses to repair tissues, support muscle growth, and maintain healthy skin, hair, and nails. They also play a key role in producing enzymes and hormones, supporting immune function, and helping regulate mood and energy levels. 

The research:

Live a long life, and feel good

There is no single “longevity superfood.” But a diet rich in whole, minimally processed plant foods, healthy fats, and diverse nutrients consistently shows anti-ageing effects and long-term health. Get a range of foods for health and longevity with Grape Tree today.

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