Test, Don't Guess: A Functional Medicine Guide to Supplements After 40
Episode Summary
Brian hosts Sophia Viner, NP, a nurse practitioner with 20 years of experience and the last 5 in functional medicine, for a practical look at supplements for healthy aging. Sophia explains why the starting point is never a TikTok trend but a lab draw: check your levels, find the actual deficiencies, then supplement what your body needs. She walks through the nutrients people over 40 most commonly run low on, vitamin D, B12, magnesium, iron and ferritin, omega-3s, and CoQ10, and connects them to everyday symptoms like afternoon crashes, brain fog, muscle spasms, and tingling in the hands and feet. The conversation covers why normal labs are not optimal labs, the nutrient pairings that make supplements work (vitamin D with vitamin K and magnesium, zinc balanced against copper, iron taken with vitamin C), why statin users usually need CoQ10, and why even people who eat well can test low thanks to depleted soil. Sophia also gets blunt about quality: supplements are not FDA regulated, so third-party testing and clean ingredient lists matter, and cheap drugstore bottles often fail to move blood levels at all. The episode closes with the Med Matrix process, from discovery call to extensive labs to an hour-long results review and a personalized plan.
Key Topics
- 1
The supplements people over 40 ask about most: vitamin D, magnesium, omega-3 fish oil, B vitamins, NAD, and CoQ10
- 2
Why so many people supplement blindly: social media trends on TikTok and Instagram
- 3
Normal versus optimal lab ranges, and why low normal levels can still cause symptoms
- 4
Symptoms that point to deficiencies: afternoon crashes, brain fog, muscle spasms, and tingling in the hands and feet
- 5
Nutrient synergy: vitamin D with vitamin K and magnesium, zinc balanced against copper, iron with vitamin C
- 6
Why statins deplete CoQ10 and why statin users should supplement it
- 7
Iron and ferritin in perimenopausal women, and how to dose iron for absorption
- 8
Why eating well is not always enough: depleted soil and less nutrient-rich food
- 9
Supplement quality: third-party testing, fillers, and why supplements are not FDA regulated
- 10
The Med Matrix process: discovery call, extensive labs, and an hour-long results review
Quotable Moments
“Check. Do not guess. Deficiencies are common.”
“Why you take it together with vitamin K? Because vitamin K actually helps to pull calcium out of your arteries and it directs it into the bone.”
“So what statins do is they lower your coenzyme Q10 level.”
“So, supplements are not FDA regulated. So, anyone can come up with a supplement, put it on a shelf”
“It's relief of symptoms. It's feeling great. It's feeling optimized.”
Treatments Mentioned
FAQ
Healthy Aging FAQ
Not with a trending product. Sophia Viner, NP starts everyone the same way: check your levels with a functional medicine provider, see where you are actually deficient, then replete based on those numbers. She lists vitamin D, magnesium, omega-3 fish oil, B vitamins, NAD, and CoQ10 as the supplements people over 40 ask about most, but which ones you need depends entirely on your labs.
Because normal is not optimal. Sophia Viner, NP explains that reference ranges are very wide and built on broad populations, not on you. Using TSH as an example, someone at 0.5 and someone at 4 are both called normal but will not feel the same, so she targets the middle of the range where people feel their best. The same logic applies to vitamin D and B12, where low normal levels can still mean fatigue, brain fog, and afternoon crashes.
Sophia Viner, NP highlights several pairings. Vitamin D should be taken with vitamin K, which pulls calcium out of the arteries and directs it into bone, plus magnesium for better absorption. Zinc has to stay balanced against copper, roughly a two to one ratio, or overdoing zinc creates low copper symptoms. Iron absorbs best with vitamin C, taken every other day and away from other supplements, and iron bisglycinate is gentler on the stomach.
Sophia Viner, NP recommends it. Statins lower your coenzyme Q10 level, and CoQ10 is involved in cellular energy production. Since the body also makes less CoQ10 with age, someone on a statin generally runs low, which is one reason conventional visits that hand over a cholesterol pill without discussing CoQ10 leave patients feeling depleted.
Buyer beware, says Sophia Viner, NP. Supplements are not FDA regulated, so anyone can put a product on a shelf. She looks for third-party tested brands with minimal fillers, and Med Matrix dispenses pharmaceutical-grade supplements through Fullscript. The proof is in follow-up blood work at 3 to 6 months: quality supplements move levels up, while she often sees store-bought versions fail to raise levels at all.
Food comes first, but it is not always enough. Sophia Viner, NP calls diet the number one medicine she starts people on, yet she regularly sees patients who eat plenty of fish test low on omega-3 status, and today's depleted soil means food carries fewer nutrients than it did generations ago. Gut health matters too: low stomach acid, inflammation, and proton pump inhibitors all reduce absorption. The reverse is also true, you cannot supplement your way out of a poor diet.
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