Longevity is all the buzz—but are we chasing health or just hype?

Longevity has officially entered its main character era. It’s in Netflix documentaries (Don’t Die: The Man Who Wants to Live Forever), it’s all over social media (biohackers tracking their sleep cycles with more commitment than their relationships), and it’s reshaping the beauty industry (from topical to barrier to cellular-level ingredient work). But longevity is no longer about just adding candles to your birthday cake—it’s about extending the good years. The ones where you can dance at weddings, not just attend them for the food.

At first glance, it sounds like the same old wellness advice, just repackaged. Eat well, sleep more, exercise, and maintain relationships. So, is longevity just clever marketing? Not quite.

Longevity isn’t about living longer, it’s about living well

In Lifespan: Why We Age—and Why We Don’t Have To, geneticist Dr David Sinclair controversially claims “ageing is a disease, and that disease is treatable.” He says that practices like intermittent fasting, cold exposure, and targeted exercise don’t just improve health but reverse biological ageing.

Not everyone is convinced. Critics say these methods show promise but remain largely theoretical, with limited long-term human studies. Still, the allure is undeniable. While the longevity industry capitalises on the desire to live longer, it also reframes ageing—shifting the focus from lifespan to healthspan.

If Sinclair’s theories focus on longevity at a lifestyle level, regenerative medicine takes it further—treating ageing at a cellular level rather than just managing decline. This is where experts like Dr Adeel Khan, MD, Founder of Eterna Health and an interventional cell and gene therapy specialist, come in. Dr Khan, who was a speaker at the Peak Longevity Festival hosted in Dubai in February, says, “People want to be healthier both inside and out. They don’t want to just put something in their body to superficially look better—they want their cells to actually function better, too.”

So how does one go about stretching their healthspan? It’s part science, part self-care, and a little bit of trial and error.

The science of longevity: Biohacking or just better habits?

At the core of longevity research is a microscopic player with a big impact: telomeres. These protective caps at the ends of our DNA act like shoelace tips, keeping genetic material from fraying. As they shorten with age, cells break down, leading to fatigue, muscle loss, and collagen depletion.