Apr 13, 2026
3 min read
Foods for aging and longevity
As we age, our bodies go through natural changes.Metabolism slows down, muscle mass declines, and the risk of chronic disease increases.
"Diet plays a huge role in how well we age, affecting everything from energy levels and brain function to heart health and lifespan," says nutritionist Claudia Ashley.
She said as such, many people will focus on longevity diets that aren’t about strict rules or quick results, but which emphasise sustainable, nutrient-dense eating patterns that support long-term health, reduce inflammation and help prevent disease.
“Many of these diets were developed by populations known to live longer, healthier lives,” she said.
Ashley says some popular foods for longevity include:
Include fruits, vegetables, whole grains, olive oil, fish and nuts
Associated with reduced risk of heart disease and cognitive decline
Encourages moderate eating and social eating.
Blue belt diet
According to the regions where people usually live on 100
Focus on plant foods, legumes, and minimally processed foods
Include life habits such as community, movement and purpose.
High in fiber, antioxidants and nutrients
Linked to reduced risk of cancer, diabetes and heart disease
These can be vegan or vegetarian variants.
It is rich in fruits, vegetables, lean protein, and low-fat dairy
Limit sodium, sugar, and saturated fat
Support the health and heart health of the elderly.
Combines Mediterranean and DASH principles
It focuses on brain-boosting foods like berries and leafy greens
It has been shown to reduce the risk of Alzheimer's disease.
“People using these plans eat mostly whole foods and minimize processed and ultra-refined foods,” Ashley said."The focus is on natural, nutrient-rich ingredients."
He also said it is important to focus on plant sources, whether vegetables, fruits, legumes, nuts and seeds, which are rich in antioxidants that fight the damage of aging.
"A moderate protein intake maintains muscle mass, which is important for older adults, and includes sources such as fish, beans and lean meats," he said.
"Healthy fats are also important, with an emphasis on olive oil, nuts and omega-3 fatty acids."
He said this diet will also prevent obesity and excess fat and emphasize caloric balance and not overeating.
"Some longevity diets include low calorie restriction and aim to reduce stress on the body and improve metabolic health," he said.
Longevity is not just about diet, Ashley said, but a combination of habits that include regular physical activity, quality sleep, stress management and strong social connections.
"The best diet for aging and longevity isn't a rigid plan, it's a consistent pattern of healthy eating. Diets like the Mediterranean, MIND, and plant-based approaches stand out because they're balanced, flexible, and backed by long-term research," Ashley said.
