Hacker News: zsolt224

Show HN: I built Male Hormone Lab Interpreter that does what LLMs can't

zsolt224 — Sat, 02 May 2026 09:12:39 +0000

Hi,

My name is Zsolt. I build clinical tools for labs and longevity clinics, and I release some of them as free public tools.

The Male Hormone Lab Interpreter unique feature is that it visualizes the testosterone production and feedback pathway on HPG axis to identify the true root cause of hormonal imbalances. All hormones are interpreted based on optimal ranges. This is something LLMs still struggles with.

The only difference between public and clinical ones is that the clinical suggest diagnosis and treatment options. But if there is any type of disfunction its obvious from the diagram and differentiating is also straigh forward.

All the tools on the longevity-tools.com are 100% free and private. No email or any data collection, no third party scripts, no tracking scripts. Full privacy.

Check out my other tools:

## Thyroid Function Interpreter https://longevity-tools.com/thyroid-function-interpreter

Visualizes hormones, calculated sensitivities, and secretory capacities on the HPT axis so thyroid dysfunction patterns are easier to recognize.

## Glucose Metabolism Interpreter https://longevity-tools.com/glucose-metabolism-interpreter

Verifies fasting and insulin status, then classifies glucose-metabolism dysfunction using insulin-dependent and non-insulin-dependent markers.

## Liver Function Blood Test Interpreter https://longevity-tools.com/liver-function-interpreter

Calculates liver health scores, runs differential diagnostic logic, helps identify the tissue of origin of elevated enzymes, and surfaces relevant next steps from clinical guidelines.

## Iron Status Interpreter https://longevity-tools.com/iron-status-interpreter

Adjusts ferritin for inflammation, estimates real iron stores, interprets them against optimal targets, and provides guideline-based next steps plus a personalized supplementation plan.

## Grip Strength Interpreter https://longevity-tools.com/grip-strength-interpreter

Shows grip-strength percentiles, estimates all-cause-mortality risk impact, proposes achievable targets, and projects future muscle-weakness risk.

## Humanity's Bortz Blood Age Calculator https://longevity-tools.com/humanitys-bortz-blood-age

The most advanced biological age calculator model based on blood tests available in commercial labs. It was trained on 306k UK Biobank participants and has higher predictive value than Levine PhenoAge.

## Levine PhenoAge Biological Age Calculator https://longevity-tools.com/levine-pheno-age

A biological age calculator based on routine blood biomarkers, developed by Morgan Levine, Steve Horvath, and collaborators. It prioritizes accessibility and low-cost lab markers over maximum precision.

Comments URL: https://news.ycombinator.com/item?id=47984764

Points: 2

# Comments: 0

New comment by zsolt224 in "Deleteduser.com –A $15 PII Magnet"

zsolt224 — Sun, 19 Apr 2026 15:30:09 +0000

So whats the best strategy for this?

long time ago, I was doing the same, but I was using randomString@example.com and example.com cannot be bought, since its dedicated to examples.

Obviously one has to have a dedicated field too, something like isDeleted or deletedAt...

New comment by zsolt224 in "Battery is about to change the world in 3 months, or make this guy a fool"

zsolt224 — Thu, 15 Jan 2026 09:25:30 +0000

One of the YouTuber did some digging and it’s technically a capacitor. Which is fine as long as it has the desired features

New comment by zsolt224 in "ChatGPT Health"

zsolt224 — Wed, 07 Jan 2026 21:33:51 +0000

What you described already exists:

- for liver: https://www.longevity-tools.com/liver-function-interpreter - for insulin resistance: https://www.longevity-tools.com/glucose-metabolism-interpret...

etc

New comment by zsolt224 in "ChatGPT Health"

zsolt224 — Wed, 07 Jan 2026 21:07:57 +0000

LLMs were actually not that great so far in the preventative side / risk prediction. They are very good if you already have the disease but if you are trending there they were chill about it. The better way would be to first calculate the risks via deterministic algos and then do differential diagnosis. So something that specialized doc would do. This is an example of an online tool, that does it like that: https://www.longevity-tools.com/liver-function-interpreter

Show HN: Measuring the "Mom-induced" insulin resistance this Christmas

zsolt224 — Thu, 25 Dec 2025 10:02:12 +0000

Does your mom show you love by the amount of cakes she bakes for you? If yes, please note that transient insulin resistance can develop within a week if you are pushing it.

I’m a precision health consultant for longevity clinics, focused on spotting metabolic risk early and I built this comprehensive Glucose Metabolism Interpreter:

- All labs are optional — plug in whatever you have

- Uses HOMA2 instead of classic HOMA (which isn’t great because it’s linear). It also provide estimated beta-cell function

- Includes insulin-independent markers, so it works even with basic annual labs

- Gives you meaningful interpretation, not just numbers

Don’t blame your mom :) I need to figure out where to secretly donate half of the cakes, because if I ate them all, my mom’s secret gift would be type 2 diabetes :)

Merry Christmas to you and your pancreas!

Comments URL: https://news.ycombinator.com/item?id=46383415

Points: 1

# Comments: 0

New comment by zsolt224 in "Tell HN: Want a better HN? Visit /newest"

zsolt224 — Sat, 29 Nov 2025 08:22:35 +0000

It seems to me that unless you already have some social following and promote your HN submission there it’s impossible to get to the front page. No matter how good your submission is.

I posted (subjectively) high quality stuff about longevity tools that had a potential to be on front page, but the /newest just grows go so fast that no one will notice it.

Show HN: Interpret your Liver Labs like a top Longevity Clinic would

zsolt224 — Wed, 26 Nov 2025 16:42:09 +0000

Dear fellow (bio)hackers.

Interpreting liver labs is challenging, since the normal ranges you see on your labs are skewed (most people are obese or overweight). So after six months of work, and with help from leading researchers in the field, I just launched the Liver Function Interpreter. The tool calculates various risks based on the best indices and runs differential diagnosis if something is wrong.

Everything is explained in this video: https://www.youtube.com/watch?v=9hJcKWQ88E8

I made it completely free and it will stay free forever. No sign-up or anything.

Link to the tool: https://www.longevity-tools.com/liver-function-interpreter

Note: I do not sell anything or promote anything paid. I do not collect any data.

Comments URL: https://news.ycombinator.com/item?id=46059332

Points: 2

# Comments: 0

Show HN: Best biological age model using standard blood tests

zsolt224 — Tue, 14 Oct 2025 15:52:51 +0000

There’s a fairly recent research paper introducing a biological age calculation model, that uses only standard blood tests and outperforms PhenoAge. So I reached out to the original researchers and did a 1-hour+ interview with one of the authors. I developed an online calculator based on it and we came up with a name for it: "Bortz Blood Age Calculator"

*About the model:*

- Trained on 306k individuals from the UK Biobank database - Validated on similar dataset - It offers an 11% relative increase in predictive value over the Levine PhenoAge - This model includes better markers (like Cystatin-C, ApoA1...) compared to other similar models. - Interesting thing is that the model selected for higher total cholesterol, ALT and creatinine as better. More about it later.

*Online calculator:*

Based on the model, I created 100% free and private online calculator: https://www.longevity-tools.com/humanitys-bortz-blood-age

*Video*

I also made a video about the calculator, which explains:

- more info about the model and how it was created - gotchas of the calcutor - some speculation about why the model selected for higher total cholesterol, ALT and creatinine

Video link: https://www.youtube.com/watch?v=2VHIfouvcYE

*Research paper link:*

https://www.nature.com/articles/s42003-023-05456-z

---

I do not sell anything or promote anything paid. This is not a medical advice.

Comments URL: https://news.ycombinator.com/item?id=45581510

Points: 1

# Comments: 1

New comment by zsolt224 in "Ask HN: What are you working on? (October 2025)"

zsolt224 — Tue, 14 Oct 2025 06:55:07 +0000

thank you for your kind words and good feedback.

importing labs is something I think about a lot and I think the solution will be something along the lines of what you suggested. Since I need to keep 100% privacy which I publicly promise.

New comment by zsolt224 in "Ask HN: What are you working on? (October 2025)"

zsolt224 — Mon, 13 Oct 2025 07:58:39 +0000

www.longevity-tools.com

Interpret your bloodwork for free with a precision of a longevity clinic. You can calculate your biological age based on the best bioage calculators.

New comment by zsolt224 in "Finding the Best Sleep Tracker"

zsolt224 — Tue, 01 Apr 2025 05:22:04 +0000

Native Apple Watch wins in most scientific papers and also in tests done by “the quantified scientist” by a large margin. Apple Watch does not use HRV but accelerometer for movement and breathing rate.

Apple Watch also wins for HR during exercise.

So if you want one device for everything, there is little competition yet.

New comment by zsolt224 in "WebShield – A new wide-spectrum content blocker for Safari"

zsolt224 — Sat, 01 Mar 2025 08:49:01 +0000

Is it possible to disable autoplay next video on YouTube?

And disable YouTube shorts?

Thank you for developing open source extension.

New comment by zsolt224 in "I bought a CO2 monitor and it broke me"

zsolt224 — Sat, 04 Feb 2023 07:55:47 +0000

The only solution is a ventilation system. Get the one that recovers humidity too, not only heat.

It is required by law in most European countries in new constructions.

New comment by zsolt224 in "Ask HN: What is your system for dirty dishes?"

zsolt224 — Fri, 30 Dec 2022 13:45:03 +0000

Miele dishwashers have auto dosing of detergent and auto open after they are finished. They are very quiet too.

Remote start via app makes zero sense without auto dosing.

New comment by zsolt224 in "Ask HN: Do you measure and/or mitigate CO2 in your living space?"

zsolt224 — Mon, 05 Dec 2022 16:11:51 +0000

Buy a co2 meter. You have to have windows opened for much more than 5 minutes. Aaaand you have to open them every 40 minutes, even when you sleep. Good luck with that.

New comment by zsolt224 in "Analysis of Apple Watch running data"

zsolt224 — Sun, 25 Sep 2022 19:25:53 +0000

When I was running a half marathon with my Apple Watch 6 ( without a phone) I was getting a 1km notifications within 5-15 meters of the km signs. I was super impressed with the accuracy

New comment by zsolt224 in "Ask HN: Inherited the worst code and tech team I have ever seen. How to fix it?"

zsolt224 — Sun, 18 Sep 2022 11:52:34 +0000

I would send the management a link to this post. It contains a lot of good quality, honest opinions so they could understand the scale of the situation.

New comment by zsolt224 in "Long-Chain Omega-3 Fatty Acids Improve Brain Function, Structure in Older Adults (2014)"

zsolt224 — Tue, 10 May 2022 07:39:02 +0000

There are 3 types of omega3:

1. Trigliceride 2. Ethyl ester 3. Re-esterified trigliceride

Almost all suplements sold are ethyl ester which means poor absorption and fast degradation (rancid).

Always buy triglycerides.

If you take ethyl ester, make sure it’s fresh and take it with fatty food

New comment by zsolt224 in "Inflammation in the gut is encoded by neurons in the brain"

zsolt224 — Tue, 11 Jan 2022 08:33:55 +0000

For me, nothing worked except 1h feeding window a day. So basically I eat once a day, about 2200 - 2600 calories.

What is strange is that I can literally eat any food like pizza and it does not matter.

Before I had non-stop diarrhea, bloating, diagnosed allergies to almost every food, bad whole body eczema…

It’s not placebo since I started this diet for longevity and not for the reasons above. So when my symptoms went away I was genuinely surprised.