Med Matrix functional medicine and wellness clinic

Is Biohacking Just Hype? What Actually Works for Weight Loss and Energy

Cole Siefer (co-founder, host), Colin Renaud, DC, PA-C (Med Matrix provider)30:55BiohackingJanuary 6, 2026

Episode Summary

Colin Renaud (DC, PA-C) explains the difference between functional medicine and biohacking, and how they work together at Med Matrix. The episode covers practical starting points for anyone wanting to optimize their health, including the counterintuitive reality that calorie restriction and cardio are not effective weight loss strategies. Colin walks through what a real biohacking patient journey looks like from initial lab assessment through hormone optimization, and shares a compelling case study of a patient with undiagnosed diabetes who transformed his health through hormonal and nutritional intervention.

Key Topics

  1. 1

    Functional medicine vs. biohacking: definitions and how they differ

  2. 2

    Why 85% of chronic illness in the US is driven by poor lifestyle and diet

  3. 3

    Basic health foundations: protein at every meal, sleep, movement, weight training

  4. 4

    Why calorie restriction and cardio do not produce lasting fat loss

  5. 5

    Why lifting weights signals fat burning (muscle metabolism and big muscle groups)

  6. 6

    Vitamin D deficiency in the Northeast and its broad health impacts

  7. 7

    How diet affects hormone production (specific nutrients required to make testosterone, estrogen, cortisol)

  8. 8

    The timeline for patient improvement from first visit to full optimization

  9. 9

    Why personalized blood work beats "willy-nilly" IV bar visits

  10. 10

    Case study: overweight man in his 50s with undiagnosed diabetes who became motivated and lost significant weight after hormone optimization

Quotable Moments

Functional medicine is really designed to go the other direction of okay you don't feel well but why? What is it that's not optimal about your body? And how do we reverse this problem rather than masking it?

Colin Renaud, DC, PA-C

Cardio does not make you lose weight. Reducing the amount of calories does not make you lose weight. You've got to lift weights. You've got to eat properly. You have to look at the body as a machine.

Colin Renaud, DC, PA-C

When your body is in a constant starvation mode, when you're not eating enough calories in a day, what your body will do is store almost everything you put in your mouth as fat because it thinks that you are starving.

Colin Renaud, DC, PA-C

He had an A1C of 7.6 which is very well in the diabetic range. He had seen his doctor six months before. I said to him, I'm really sorry that your doctor didn't do better with you because you don't get full-fledged type 2 diabetes in six months.

Colin Renaud, DC, PA-C

Not only did I help him lose the weight. It was this light bulb that he needed. Optimizing his hormones and nutrition turned a light bulb on for him to be motivated. That biohack of hormone optimization hacked his brain to feel more motivated.

Colin Renaud, DC, PA-C

Treatments Mentioned

Expanded functional blood panel (hormones, thyroid, cardiac risk markers, nutrient levels, A1C)Intramuscular vitamin and nutrient injectionsIV nutrient infusionsBioidentical hormone replacement therapyThyroid optimizationGLP-1 medications for weight lossDietary optimization and nutrition educationIntermittent fasting protocolsBody composition assessment

Biohacking FAQ

Functional medicine focuses on finding and reversing root causes of symptoms. Biohacking takes that further by using tools like hormone optimization, targeted nutrition, and advanced lab testing to push your body beyond baseline health into peak performance and longevity.

When you eat below your basal metabolic rate, your body enters starvation mode and stores almost everything as fat. Cardio does not signal fat burning the way weight training does. Lifting weights, especially targeting large muscle groups, is what triggers the body to burn stored fat.

Yes. Optimizing hormones like testosterone can activate the brain's motivational pathways. Many patients describe it as a light bulb turning on, feeling driven to exercise and eat well for the first time. This is one of the most powerful biohacking mechanisms available.

Some improvements, like energy from a vitamin D injection, happen within hours. Hormone optimization typically produces noticeable benefits within one to two weeks, though full optimization can take three to six months. Dietary changes compound over time.

Vitamin D is required for immune cell production, thyroid function, and hormone production. Almost every patient in the Northeast has low vitamin D, and correcting a severe deficiency can dramatically improve energy, sleep, and cognitive function quickly.

A wellness IV bar provides generic infusions without bloodwork, medical history, or personal goals. A functional medicine clinic reviews all of these first, identifies specific deficiencies, and creates a targeted plan. The difference is between a temporary boost and an actual path to long-term health.

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