How to lower your biological age through nutrition: the science behind the Fasting Mimicking Diet and longevity
Biological age and longevity: why It matters more than your actual age
For decades, we measured aging simply by counting the years since birth. Today, science tells us that's only part of the picture.
Two people born on the same day can have dramatically different health outcomes. One may maintain high energy levels, physical function, and healthy metabolic markers, while the other may already be experiencing signs of age-related decline.
The difference often comes down to biological age.
Biological age reflects how old your body truly is at the cellular, metabolic, and physiological levels. In recent years, it has become one of the most widely studied indicators in the fields of longevity and healthy aging.
Researchers and healthcare professionals are increasingly asking the same question: can biological age be slowed—or even reversed?
Growing scientific evidence suggests that nutrition may play a key role.
What is biological age?
Biological age is an estimate of how well your body is functioning compared to your chronological age.
It is assessed using a range of biomarkers, including:
- Metabolic health markers
- Inflammation levels
- Body composition
- Immune system function
- Cardiovascular health
- Epigenetic markers associated with aging
When biological age is lower than chronological age, it suggests that the body is functioning more like that of a younger person. Conversely, a higher biological age may indicate an increased risk of age-related health conditions.
This is why modern longevity research is focused not just on extending lifespan, but on maximizing healthspan—the number of years spent living in good health, maintaining independence, vitality, and quality of life.
Can you reduce your biological age?
Over the past several years, numerous studies have shown that lifestyle interventions can positively influence the aging process.
Among the most important factors are:
- Nutrition
- Regular physical activity
- Quality sleep
- Stress management
- Maintaining a healthy body composition
Particular attention has been given to nutritional strategies capable of activating cellular mechanisms linked to longevity, including:
- Autophagy
- Cellular regeneration
- Reduced inflammation
- Improved insulin sensitivity
- Optimization of metabolic pathways associated with aging
It is within this context that Professor Valter Longo and his research team developed the Fasting Mimicking Diet.
The Fasting Mimicking Diet: an innovative approach to longevity
The Fasting Mimicking Diet (FMD) is a nutrition program designed to reproduce some of the biological effects of fasting while still providing essential nutrients.
Unlike complete fasting, the FMD is characterized by:
- Controlled calorie intake
- Reduced protein consumption
- Low sugar intake
- A predominance of plant-based unsaturated fats
The goal is to trigger a fasting-like metabolic response without completely depriving the body of nourishment.
Research conducted by Professor Valter Longo's team has shown that periodic cycles of the Fasting Mimicking Diet may support processes associated with healthier aging and improved metabolic health.
Clinical studies published in recent years have also observed reductions in average biological age following FMD cycles, regardless of weight loss.
Fasting Mimicking Diet and biological age: what the research shows
A study published in Nature Communications in 2024 examined the effects of three cycles of the Fasting Mimicking Diet on several biomarkers associated with aging.
The findings showed improvements in metabolic and immune-related markers linked to a reduction in biological age.
On average, participants experienced a biological age reduction of approximately 2.5 years, an effect that was observed independently of weight loss.
According to the researchers, these results may be connected to cellular renewal processes and improvements in several risk factors associated with age-related diseases.
It's important to remember that aging is a complex, multifactorial process. No single intervention can stop the clock. However, current evidence suggests that targeted nutritional strategies may help improve biological markers associated with aging.
Prolon: the research-based Fasting Mimicking Diet
Prolon is a 5-day nutrition program developed to provide a standardized version of the Fasting Mimicking Diet.
Its formulation was carefully designed to deliver a specific balance of nutrients that supports the metabolic processes associated with the FMD.
The program is the result of more than two decades of research into longevity and healthy aging and represents one of the most recognized practical applications of the work conducted by Professor Valter Longo and his team.
Prolon's purpose goes beyond weight management. It was designed to support physiological mechanisms associated with metabolic health, cellular well-being, and healthy aging.
The key ingredients in Prolon and their role
One of Prolon's defining features is its carefully selected blend of ingredients, designed to provide essential nutrition while maintaining the characteristics of the Fasting Mimicking Diet.
Some of the core foods included in the program are:
Plant-based soups
Rich in fiber, micronutrients, and bioactive compounds derived from vegetables and legumes.
Nuts
Ingredients such as almonds and macadamia nuts provide unsaturated fats that are widely associated with cardiovascular health.
Extra virgin olive oil
A cornerstone of both the Mediterranean Diet and the Longevity Diet, extra virgin olive oil is rich in monounsaturated fats and antioxidant compounds.
Olives
Olives provide naturally occurring unsaturated fats and polyphenols, compounds studied for their potential role in cellular protection.
Kale crackers
Kale is known for its high concentration of vitamins, minerals, and antioxidant phytochemicals.
Herbal teas
Herbal teas help support hydration while delivering naturally occurring plant compounds from carefully selected herbs.
Together, these ingredients are formulated to support the nutritional protocol without excessively stimulating metabolic pathways linked to cellular growth—one of the key principles behind longevity-focused nutrition strategies studied by Professor Longo.
Living longer or living better?
When we talk about longevity, the goal isn't simply to add more years to life.
Modern research is increasingly focused on extending healthspan—the number of years spent living in good health.
In other words, the challenge isn't just reaching an advanced age. It's maintaining energy, independence, physical function, and mental well-being for as long as possible.
Nutrition is one of the most powerful tools we have to influence this process.
The Longevity Diet is built around this philosophy: promoting evidence-based nutritional strategies that may help the body age more healthily while supporting long-term quality of life.
Biological age is emerging as one of the most important indicators of how we are truly aging.
Scientific evidence suggests that specific nutritional strategies may help improve biomarkers associated with aging and metabolic health. Among them, the Fasting Mimicking Diet developed by Professor Valter Longo is one of the most extensively studied approaches in longevity science.
Prolon was created from this research and offers a nutrition program designed to support physiological mechanisms associated with healthy aging.
Because the ultimate goal of longevity isn't simply adding years to your life—it's adding life to your years.