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What Is the Downside of Red Light Therapy?

Does SRSF1 Reverse Ageing? One Gene, Real Cells, Zero Human Proof

Does Urolithin A Actually Do Anything for Muscle?

Gen Z style illustration asking do GLP-1 drugs slow ageing, showing a glowing injection pen and a DNA helix turning into vines

Do GLP-1 Drugs Really Reverse Biological Ageing?

How to improve processing speed brain: Gen Z cartoon of a brain racing a lightning-bolt track with stopwatch and speedometer motifs, doctorbiohacks.com badge

Can You Train Processing Speed, the Brain Skill Tied to Longer Life?

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How Often Should You Cold Plunge? The Protocol That Makes Sense

Longevity

What Is the Downside of Red Light Therapy?

Longevity

Does SRSF1 Reverse Ageing? One Gene, Real Cells, Zero Human Proof

Longevity

What Is the Downside of Red Light Therapy?

What is the downside of red light therapy? For most healthy adults who use a well made device exactly as directed, the downside is small: mild and temporary skin redness, eye strain if you skip eye protection, and a real chance of paying a lot of money for a modest or uncertain benefit. The bigger…

October 26, 2026October 26, 202618 mins read

Longevity

Does SRSF1 Reverse Ageing? One Gene, Real Cells, Zero Human Proof

Does SRSF1 reverse ageing? In old human cells in a dish and in aged mice, boosting this one gene shifted cells toward a younger state and extended median lifespan by 14%. In people, it has not been tested at all. That gap, between a striking laboratory result and any human evidence, is the whole story…

October 25, 2026October 25, 202614 mins read

Longevity

Does Urolithin A Actually Do Anything for Muscle?

Does urolithin A work? If you have seen the $99 strawberry gummies promising to change how your cells age, that is the question to ask before you subscribe. Urolithin A is a postbiotic compound your gut can make from pomegranate, berries and walnuts, and the supplement industry’s pitch rests on one striking number: a randomised…

October 24, 2026October 24, 202612 mins read

Longevity

Do GLP-1 Drugs Really Reverse Biological Ageing?

Do GLP-1 drugs slow ageing? If you take a GLP-1 drug like semaglutide or tirzepatide, are you getting younger on the inside? At the 2026 Aging Research and Drug Discovery (ARDD) meeting, Novo Nordisk and Eli Lilly stood up and said something close to that: patients on their blockbuster weight-loss drugs came out roughly two…

October 23, 2026October 23, 202612 mins read

Longevity

Can You Train Processing Speed, the Brain Skill Tied to Longer Life?

Short answer: Yes, probably. In a study of 4,561 Australian adults followed for a median of 11.3 years, each standard-deviation increase in processing speed was linked to 32% lower mortality (hazard ratio 0.68), after adjusting for education, lifestyle and health factors. And in the ACTIVE trial of about 2,800 older adults, ten hours of adaptive…

October 22, 2026October 22, 202615 mins read