Jon Lipsey

Jon Lipsey is the founder of Unfiltered, a media platform covering health, fitness, technology and human performance. He is the former editor of Men's Fitness magazine and has spent more than 20 years reporting on the science and business of the health industry. He has interviewed leading figures across performance medicine, longevity science and sports business.

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HEALTH Obesity crisis

Metabolic ill health will cost the global economy trillions

McKinsey Health Institute recently released a 59-page report on global metabolic health — and the numbers are impossible to ignore. Around 900 million adults worldwide are obese, and more than 20 chronic diseases, from diabetes to dementia, are directly linked to obesity. The economic impact is equally severe: $2.76 trillion in GDP could be wiped…

ByJon LipseyFebruary 1, 20260Comments

HEALTH Explainer

Can dental infections cause chronic illness? What the evidence and biology suggest

Dental infections can contribute to chronic illness by acting as persistent sources of inflammation, immune activation, and microbial byproducts, although their impact varies depending on the individual, the severity of infection, and overall biological context. This is one of the most important, and most misunderstood, questions in oral health. At one extreme, the claim is…

ByJon LipseyJanuary 20, 20260Comments

HEALTH Explainer

CJC-1295 Explained: What It Is, How It Works and What You Need to Know

In the world of health optimisation and performance enhancement, CJC-1295 has emerged as a popular peptide among athletes, biohackers, and longevity enthusiasts. It’s often described as a gentler, smarter way to support growth hormone levels — a biological lever tied to muscle recovery, fat metabolism, skin health, and even sleep. But while it’s widely used…

ByJon LipseyJanuary 19, 20260Comments

HEALTH Explainer

Peptide Therapy: What It Is, How It Works, and is it Safe or Legal?

Peptide therapy has become a buzzword in high-performance health, with claims ranging from faster recovery and better sleep to improved fat loss, hormonal balance, and even longer lifespan. But while its popularity is growing among athletes, biohackers, and anti-aging enthusiasts, there’s still a lot of confusion around what peptide therapy actually is — and whether…

ByJon LipseyJanuary 17, 20260Comments

HEALTH Explainer

Are root canals safe? What the debate is really about

A root canal is a dental procedure that removes infected or inflamed pulp from inside a tooth, disinfects the canal space, and seals it so the tooth can remain in place. That is the standard definition. It explains what the procedure does mechanically. It does not settle the harder question, which is whether a root…

ByJon LipseyJanuary 16, 20260Comments

NUTRITION Explainer

What is metabolic confusion?

In the restless world of dieting, metabolic confusion has become a hot topic. Unlike traditional approaches to eating that stick to consistent calorie restrictions, metabolic confusion introduces flexibility by alternating between high-calorie and low-calorie days. The theory? Keep your metabolism guessing, and you’ll avoid weight-loss plateaus. But does it really work and should you try…

ByJon LipseyJanuary 14, 20260Comments

BUSINESS Explainer

What is connected fitness infrastructure and how does it work in modern gyms?

The fitness industry is undergoing a structural shift. For decades, gyms were built around isolated equipment—treadmills, bikes, weights—each operating independently, with little connection to user identity, data, or digital services. That model is being replaced by something closer to a technology platform. Connected fitness infrastructure refers to a system where physical fitness equipment is integrated…

ByJon LipseyJanuary 14, 20260Comments

Uncategorized

What is Unfiltered?

Unfiltered is where you go to get advice and opinion from the world’s greatest coaches, academics and entrepreneurs that will help you Live Smarter. Living Smarter means using insights from people at the top of their game that will enhance every aspect of your life, whether that’s wellness, work or personal relationships. It’s about taking…

ByJon LipseyJanuary 14, 20260Comments

MIND Upgrade

How to stay motivated to train when your energy or results drop off

For people who train regularly, gym motivation isn’t about getting started—it’s about keeping going. You’ve already built the habit. You’ve seen results. But somewhere between week 6 and month 6 or even year 6, the spark can fade. You plateau. Life gets busy. Your workouts start to feel more like maintenance than momentum. This is…

ByJon LipseyJanuary 13, 20260Comments

BUSINESS Opinion

Joe DeFranco: Online PTs should have at least five years’ gym floor experience

Joe DeFranco Joe DeFranco is a world-renowned personal trainer and educator with more than 27 years of experience in the health, fitness and sports performance industry. His client list includes NFL players from all 32 teams, WWE Hall of Fame wrestlers, UFC fighters and SWAT team operators, and he’s the host of the chart-topping fitness…

ByJon LipseyJanuary 11, 20260Comments

Jon Lipsey

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