Simon Hill

06/18/2026

Excited to join as an Ambassador - a men’s fertility brand formulated by Stanford urologist .michaeleisenberg.

Did you know roughly half of all infertility cases involve a male factor? Half. And yet we’re usually the last ones to get tested, while the whole conversation tends to land on women.

The good news is that a lot of this is in our hands. Cutting back on alcohol, ditching the ci******es, going easy on the sauna, training, sleeping properly, and adding targeted supplementation all genuinely move the needle. And because your body turns over s***m on roughly a 72 to 90 day cycle, the changes you make today show up in a few months – not years. That’s a pretty short runway for something this important.

SwimClub’s 90 day formulation is built on human data, with nutrients dosed at levels shown to improve s***m parameters.

Another cool fact: s***m health matters well beyond trying for a baby. Emerging research is increasingly linking a father’s health to placental development, fetal growth, and how his kids do over the long run.

And whether kids are on the radar, or not, s***m health offers a window into your overall health. Poor semen quality is associated with higher long-term risks of heart and metabolic disease – so what shows up in a semen analysis often says something about what’s going on everywhere else. And doing things to improve your s***m health very likely influences your overall health and risk of disease.

These are my own results – the numbers already look strong, and now it’s about keeping them there.

In the coming months expect an episode on deep diving male fertility with .michaeleisenberg.

To keeping our swimmers swimming!

- Simon

06/16/2026

For 40 years, pregnant women have been told to stay below 140 beats per minute, avoid heavy lifting, and skip anything intense. The data does not support most of that.

In this episode, I sit down with exercise physiologist Dr Margie Davenport to walk through what the science actually shows about exercise during pregnancy and the postpartum period.

06/09/2026

Most of the GLP-1 conversation is still about the drugs, not the biology they operate within. What are three types of hunger? What are the four phases of satiety? And what does “prehab” actually mean before starting medication? In EP422, I sat down with Dr Federica Amati (.fede.amati), Head Nutritionist at ZOE and author of The Appetite Reset, to unpack the science of appetite for everyone, on or off medication. Comment ‘422’ and the episode link will be sent right to your inbox. Listen now on YouTube, Spotify, and Apple Podcasts.

06/06/2026

on inflammation in the latest episode of 🙏🏼

Listen on all platforms - search The Proof with Simon Hill

06/05/2026

A lot of people think discipline and willpower is the missing link. If only someone could have more willpower they wouldn’t need a GLP-1. I asked about this in the latest episode of .

Listen now on YouTube, Spotify or Apple Podcasts.

06/03/2026

Yes weight comes back when you stop a GLP-1 but that’s not really a strong argument against them. When you look at data on dietary interventions - most people regain 80% of weight lost within a few years. Unfortunately, in the current food environment, it’s unrealistic to expect the population at large to change their diet and sustain those changes long term. GLP-1/GIP/Glucagon RAs are unique in that they reduce food noise making it possible for people to consume less calories in an environment that is built for overconsumption.

No solution is perfect.

The question to ask is. Is it healthier to be obese for decades or on a GLP-1 for decades at a healthy body weight? Best data we have suggests the latter.

06/02/2026

My guest today is Dr. Terry Simpson — A board-certified surgeon who’s lost 45 lbs on a GLP-1 — has a lot to say about who’s lying to you online.

Dr Terry Simpson has spent a career operating on the downstream consequences of bad health advice. In this episode we go straight at the misinformation patterns dominating health social media right now: how GLP-1s actually work and why “just eat less” misses the point, the muscle-loss conversation, the unregulated peptide market, LDL cholesterol denialism and plenty more.

Terry doesn’t hedge, and he names names. But this isn’t outrage for its own sake – it’s a clear-eyed look at how to tell credible science from a confident-sounding sales pitch.

I know you’ll get a lot from this one.

🎧 Out now, Episode 421 of The Proof with Simon Hill – link in bio.

05/12/2026

The most encouraging trend in longevity right now: at any given age, your risk of dementia is lower than it was 40 years ago.

A 90-year-old in 2024 has less than half the dementia risk of a 90-year-old in 1984 (Stallard et al, JAMA 2025). And it’s been replicated — Framingham Heart Study, Rotterdam Study, the Alzheimer Cohorts Consortium. Different countries, different cohorts, same direction.

Two things commonly get confused here, so this brief walks through both: PREVALENCE (how many people have dementia — rising, because the population is older) versus INCIDENCE (a given individual’s annual risk — falling).

And no — this isn’t because people are dying of heart disease earlier. US cardiovascular mortality has fallen by about 75% since 1950. People are living longer AND their per-age risk of dementia is dropping. Both improving together.

Why? The 2024 Lancet Commission identified 14 modifiable risk factors that together account for around 45% of dementia cases worldwide. The drivers map onto exactly the things we’ve been getting better at — blood pressure, smoking, education, hearing, lipids, glucose.

And with the rise of GLP-1s — and the next generation of dual and triple receptor agonists targeting obesity at scale — there’s a credible case the trend could accelerate further. Phase 2 and real-world data are promising. Phase 3 EVOKE in already-symptomatic Alzheimer’s was negative, which is an important caveat — primary prevention is a different question.

For the full evidence-based prevention protocol, listen to my conversation with preventive neurologist, Dr Kellyann Niotis — EP #337.

05/11/2026

USC Longevity Scientist Dr. Valter Longo: Why Growth Hormone Peptides Age You Faster

The peptide boom has moved from niche bodybuilding circles into mainstream wellness, GLP-1s are being treated as the perfect drug for almost everyone, and bi...