Mark Heisig, ND

10/03/2025

From yesterday's newsletter:

Pennywise. Michael Myers. Freddy. Jason. The Boogeyman.

All of these are "external" bad guys.

Do you treat your concussion injury like an external bad guy? If so, what does a sample of 91 Canadians suggest about that type of thinking?

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09/16/2025

Earlier today, I made the official announcement through my newsletter and Practice Better EHR:
My practice will be 100% virtual starting in 2026.

Here’s the deal:
👉If I’m being honest, it’s not something I fully wanted to do. But since that fun time called “the pandemic,” my practice has averaged about 70% virtual care.

👉And, also… Arthur Brooks describes the ideal emotional mix for making a significant change as “80% excitement + 20% fear + 0% deadness.” That’s exactly where I’m at.

I already see so many of you virtually — why not lean in and see where this takes me? I can always find an office space later. But this might be a way to help more people, free up time with my family, and make the world healthier on purpose in a more mobile way for both of us. That’s (80%) exciting to me.

Key dates:
• Nov 14 — last day for new in-person patients in Scottsdale
• Dec 18 — final day of in-person care for 2025–2026

TBD: I may still offer 1–2 week “intensives” out of an office space, similar to how folks have traveled from across the country (and world) to see me over the past five years. If that gets established, you’ll hear about it through email, social, and my EHR.

Life is a game. Thank God I get to play it.
Thanks for playing with me.

Let’s get healthy on purpose 🤙❤️

09/16/2025

HUGE announcement being dropped bright and early tomorrow in my newsletter.

Comment “2026” to subscribe and be among the first to know 🤝🙏❤️

08/29/2025

Comment “neck” to chat 🤝❤️🧠

So many folks I’ve seen over the years (who have been dealing with symptoms for years) were simply missing a legit neck assessment.

In the office I use the for assessment, and tools like , , and more to get folks back to school/work or elite sports performance. 🤙

08/19/2025

Comment “points” for the full post.

80% of us aren’t active enough. But most of us will play a game.

Comment “points” for the rules. 🤙

08/15/2025

Comment “healthy” to read my latest piece “The Paradox of Awareness.” It might be what you think it is, but you’ll have to read it to find out 🙏❤️🤙

08/15/2025

10 years together in April. 5 years married today.

Love you 😘❤️

08/13/2025

Comment “baseline” to learn how to protect yourself, your kiddos, or your team. 🤝🧠

08/11/2025

Is your child heading back to contact sports soon? Is the "baseline test" simply sitting in a room with a computer for ~15min?

Cool cool cool. That's not a concussion baseline test.

Read more: https://open.substack.com/pub/drmarkheisig/p/school-is-back-lets-talk-concussion?r=ktifi&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true

08/07/2025

If there were a “first principles” for contextualizing food choices, this post might be it.

No matter what dietary church you belong to, it’ll help you make better decisions for your health and performance.

Read here: https://drmarkheisig.substack.com/p/plate-building-101?r=ktifi

08/04/2025

If you’ve been alive the past few years, you know dietary affiliations have gotten deep. (To the point that it almost makes you miss the simple “low-fat” days.)

If you’re tired of dogmatic bullsh**—or want to sink deeper into your own with more simplicity—I’ve got a plate-building method from the good folks at Precision Nutrition that’s been helpful for over a decade.

Read here: https://substack.com//p-169676587

07/29/2025

A recent tragedy has brought the complexities of CTE and brain health into sharp focus. It's a deeply saddening issue, and I'm not making light of that. But it's crucial to understand the science beyond the headlines.

My latest piece cuts through the noise, exploring what the data truly says (and doesn't) about CTE, mental health, and modifiable factors. If you're looking to contextualize the science with the news, you can read it here.

👉https://open.substack.com/pub/drmarkheisig/p/a-hard-look-at-the-cte-narrative?r=ktifi&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true