Inflammaging is the chronic, low-grade inflammation that naturally increases as we age, long before we feel aches, stiffness, or see visible signs of aging.

Originally defined by immunologist Dr. Claudio Franceschi, inflammaging describes the internal “background noise” created when our immune system becomes overactive and under-effective at the same time. Unlike the inflammation you feel after an injury, this version is silent and systemic.

It is now considered one of the most influential drivers of biological aging, connected to energy decline, slow recovery, weakened immunity, and multiple age-related conditions.

The Hallmarks of Aging

The Hallmarks of Aging place inflammaging right at the centre. It interacts with multiple hallmarks:

• Cellular senescence: “Zombie” cells release inflammatory molecules. 

• Mitochondrial dysfunction: Damaged mitochondria send distress signals that spark inflammation. 

• Loss of proteostasis: Accumulated misfolded proteins trigger immune activation. 

• Altered intercellular communication: Inflammaging itself is considered part of this hallmark. 

The Aging of the Immune System

As the immune system ages, it becomes less efficient at responding to threats and less able to shut off inflammation once activated. This leads to:

• Persistent inflammatory signals 

• Slow recovery 

• Greater susceptibility to illness 

• Increased tissue wear-and-tear 

Damage Accumulation Theory

Over time, our bodies accumulate micro-damage such as oxidative stress, DNA breaks, and cellular debris. If the immune system can’t keep up with the cleanup, inflammation slowly rises.

This creates a self-reinforcing loop where damage leads to inflammation, which in turn creates more damage and more inflammation. This cycle is one key reason aging appears to speed up after midlife.

The Mitochondrial Theory of Aging

When mitochondria (our cellular energy engines) begin to weaken, they release signals that attract immune activity. This not only reduces energy production but also adds to the inflammatory load.

Ways to Support your body:

• Exercise regularly (especially strength training) 

• Incorporate fasting or time-restricted eating 

• Support nutrient-sensing pathways like AMPK & sirtuins 

• Choose anti-inflammatory, polyphenol-rich foods 

• Optimize sleep and stress management 

• Support the gut microbiome 

Final thoughts:

These habits strengthen the body’s innate ability to calm inflammation and repair at the cellular level. By understanding how chronic, low-grade inflammation builds with age, we gain clarity on why energy declines, why recovery slows, and why age-related conditions tend to appear all at once. The encouraging news? Smart lifestyle choices, targeted nutritional support, and habits that strengthen cellular resilience can meaningfully shift the trajectory of aging.