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The Pivotal Link Between the Biology of Aging and Long COVID

Here is what we’ll cover in this blog post:

  • How aging research intersect with long COVID
  • Chronological vs biological age
  • How we can address our biological age
  • How this affects the future of long COVID

Recently, a few longevity drugs have made their way into the limelight as extremely promising candidates for the prevention and treatment of long COVID.

While this is still a novel and exciting realm of discovery, with new data emerging at a rapid pace, we want to go through the evidence of how longevity drugs pack such a unique promise for defeating long COVID. 

In this post, we’ll briefly introduce the difference between our chronological age and our biological age, and how aging science intersects with one of the most notorious chronic diseases of today.

How Does Aging Relate to Long COVID?

Think of a tree with many branches, with the trunk and roots being the fundamental pathological process driving disease, and each branch being a different symptom. We’re stuck hacking away at branches (symptoms) when it is the roots/trunk that we need to be targeting.

For long COVID (and any other chronic diseases) the trunk of the tree is represented by the cellular and molecular dysfunctions that drive the aging process, also known as the hallmarks of aging (HoA). 

It is at this level that the biology of aging and the pathology of long COVID converge. This understanding could reveal the key to defeating long COVID. But what does the “biology of aging” mean, and how does it affect long COVID? 

Chronological vs biological age

Chronological age represents how long we’ve lived on earth, the number of candles on our birthday cake. Our chronological age marches hand in hand with time, and so far, there’s no way to reverse it without a time machine.

Biological age is a reflection of the health of our various organs, tissues, and cells. Biological age is our true age and explains how two 65-year-olds can have drastically different health statuses, functional abilities, and lifestyles.

Think of the comparison between Keith Richards and Patrick Stewart. They’ve both lived on earth for around the same amount of time, but while Patrick Stewart was doing one-armed pushups and directing witty comments at interviewers in his early 70s, Keith Richards smoked a pack of cigarettes, consumed copious amounts of alcohol, and was afflicted with multiple health issues. Although their chronological age is nearly identical (in fact Patrick Stewart is a few years older), their health status and biological age couldn’t be further apart.

So if time causes chronological age to increase, what causes biological age to increase?

What we eat, what stress we’ve experienced, the air we breathe, how we sleep, and even the process of digesting and metabolizing food all influence how much damage accumulates within our cells. Biological age is driven by the accumulation of damage and dysfunction within our cells and organs, which ultimately leads to wrinkled skin, brittle bones, frailty, pain, and disease. 

Damage accumulation within our cells is unavoidable. When we are young, our cells can faithfully clear away cellular damage before it accumulates and becomes a problem. As we age, our built-in systems responsible for resolving damage become less efficient: damage accumulates gradually and insidiously, and over time this gives rise to the chronic diseases and ailments that we’ve come to associate with aging. 

How Can We Turn Back the Clock?

Leading-edge research has shown that biological age can be modulated, even reversed, with lifestyle changes, treatments, and technology. 

Interventions that target the fundamental biology of aging to stop diseases from developing (which is the goal of geroscience) are, overall, a neglected group. The same treatments that could enhance our healthspan are the same ones that our healthcare system often overlooks.

Big, blinded, placebo-controlled clinical trials – the industry gold standard – usually look to investigate potential treatments for disease, rather than drugs that might keep future illness at bay. It’s a bias that makes research easier and faster and allows pharma companies to stay on top of the food chain.

The simple truth is that our current healthcare system operates as a (sick)care system in which our health isn’t treated as an asset that should be carefully guarded, but rather a game of “whack-a-mole.” In this game, a person’s health isn’t prioritized until disease rears its ugly head – and then it’s bopped on the head. 

The value of this approach is that it helps manage illness and keeps people alive for longer than they would have pre-medicine. The problem with this approach is that the extra years that people get are spent battling illness, taking multiple medications, compromised quality of life, and often filled with suffering.

Where Aging Meets Long COVID

A true (health)care approach invests in preserving one’s health while they still have it and pushing diseases out to the furthest ends of one’s lifespan or avoiding them altogether. 

The “Geroscience Hypothesis” states that, since aging is the largest shared risk factor for a variety of common chronic conditions, targeting the causes of aging will prevent or delay the onset and progression of multiple chronic diseases – including long COVID.

So, how does long COVID affect our longevity, and what problems does it present for longevity scientists and enthusiasts alike? These are questions we’ll answer in the next part of our series, as we move closer to revealing how longevity science may spell the end for long COVID once and for all.