Latest / The Brain Dump / The Mineral Files Part 6: Everything Your Doctor Didn’t Tell You About Zinc | Episode 37

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The Mineral Files Part 6: Everything Your Doctor Didn’t Tell You About Zinc | Episode 37 · The Brain Dump

• 0:00
  SPEAKER_00: Before we start, I need for you to know that I am a licensed professional counselor, a coach, and a neuroscience nerd.
• 0:06
  SPEAKER_00: I am not your doctor, your nutritionist, or your prescriber.
• 0:10
  SPEAKER_00: Nothing I share here is medical advice.
• 0:13
  SPEAKER_00: This episode is for educational purposes only and reflects my personal journey with hair tissue mineral analysis.
• 0:19
  SPEAKER_00: If you're curious about your own mineral status, please work with a qualified practitioner who can interpret your specific results in the context of your full help picture.
• 0:29
  SPEAKER_00: Let's get into it.
• 0:31
  SPEAKER_00: Welcome to the Brain Dump with Sandy Boone.
• 0:33
  SPEAKER_00: I'm Sandy, licensed professional counselor, coach, neuroscience enthusiast, and apparently someone who cannot stop learning things about the human body that make me wish I'd known them 10 years ago.
• 0:44
  SPEAKER_00: This is the Mineral Files.
• 0:46
  SPEAKER_00: It's a series where I take the science of hair tissue mineral analysis and break it down in plain language so you can understand what the minerals actually do inside your body.
• 0:57
  SPEAKER_00: Today's mineral is zinc.
• 0:59
  SPEAKER_00: And I want to warn you up front, if you're one of the many people who has been taking zinc as an immune supplement, especially since flu season has become a cultural event, this episode is going to make you think twice.
• 1:12
  SPEAKER_00: Not because zinc is bad, zinc is absolutely essential.
• 1:16
  SPEAKER_00: But because more is not always better, and with zinc, the consequences of getting the dose wrong go a lot further than most people realize.
• 1:37
  SPEAKER_00: Zinc lozenges have appeared on every pharmacy shelf.
• 1:42
  SPEAKER_00: Zinc supplements get added to the grocery store checkout displays, and every wellness account on your social feed posts something about zinc and immune function.
• 1:52
  SPEAKER_00: Your coworker tells you she's been taking it for three years and she never gets sick anymore.
• 1:58
  SPEAKER_00: And so you add zinc to your routine, or you continue taking it because you've been taking it since 2020, and it just became one of those things that you do.
• 2:07
  SPEAKER_00: But what nobody is telling you is that chronic zinc supplementation without attention to what zinc does to the other minerals in your body can suppress the very systems it's supposed to support.
• 2:21
  SPEAKER_00: And it creates a pattern of symptoms that looks nothing like zinc excess, but it is.
• 2:28
  SPEAKER_00: This episode is about what zinc does in the body, what happens when the balance tips, and why a number that looks normal on a test can be sitting inside a ratio that tells a completely different story.
• 2:41
  SPEAKER_00: Zinc is another essential trace mineral involved in more enzymatic reactions than almost any other mineral in the body.
• 2:51
  SPEAKER_00: Over 300 enzymes require zinc as a cofactor.
• 2:56
  SPEAKER_00: That number alone should tell you something about how central zinc is to basic biological function.
• 3:02
  SPEAKER_00: Zinc has six roles in the body, and here's what your body is doing every single day with the zinc that it takes in.
• 3:11
  SPEAKER_00: Role one is immune function.
• 3:13
  SPEAKER_00: Zinc is required for the development and activation of T cells.
• 3:18
  SPEAKER_00: Those are the immune cells that identify and eliminate pathogens.
• 3:22
  SPEAKER_00: This is the role that everyone knows about.
• 3:25
  SPEAKER_00: Zinc deficiency is associated with impaired immune function and an increased susceptibility to infection.
• 3:33
  SPEAKER_00: The problem is not that zinc supports immunity.
• 3:36
  SPEAKER_00: The problem is the assumption that more zinc always means better immunity, which is not how the biology works.
• 3:43
  SPEAKER_00: Zinc is needed for wound healing and tissue repair.
• 3:46
  SPEAKER_00: Zinc is essential for cell division and protein synthesis.
• 3:49
  SPEAKER_00: Two things that have to happen for damaged tissue to repair.
• 3:53
  SPEAKER_00: This is why zinc appears in wound care protocols and why deficiency is associated with poor healing.
• 4:00
  SPEAKER_00: Rule three is hormone production and regulation.
• 4:03
  SPEAKER_00: Zinc is required for the synthesis and signaling of multiple hormones, including testosterone, insulin, and thyroid hormone.
• 4:11
  SPEAKER_00: In HTMA and functional medicine frameworks, zinc is closely associated with progesterone activity.
• 4:18
  SPEAKER_00: When zinc is in balance, progesterone signaling tends to be supported.
• 4:22
  SPEAKER_00: When zinc is dysregulated, the hormonal downstream effects follow.
• 4:27
  SPEAKER_00: Rule four is neurotransmitter function.
• 4:30
  SPEAKER_00: Zinc is present in high concentrations in the brain and it modulates GABA and glutamate signaling, the primary inhibitory and excitatory neurotransmitters in the central nervous system.
• 4:43
  SPEAKER_00: Zinc dysregulation has been associated with anxiety, mood instability, and cognitive changes.
• 4:49
  SPEAKER_00: Rule five is taste and smell.
• 4:51
  SPEAKER_00: I'll bet you remember this one from COVID.
• 4:54
  SPEAKER_00: Zinc is required for the normal function of the gustine protein, which drives taste bud development and olfactory function.
• 5:02
  SPEAKER_00: This is why one of the first signs of zinc deficiency is a loss of taste and smell, and why that symptom became significant during COVID-19.
• 5:10
  SPEAKER_00: Rule six is antioxidant defense.
• 5:13
  SPEAKER_00: Zinc is a component of the copper zinc superoxide dismutase, the same antioxidant enzyme that depends on copper.
• 5:21
  SPEAKER_00: Both minerals have to be present in balance for this system to work properly.
• 5:26
  SPEAKER_00: The part nobody is talking about is zinc as a mineral antagonist.
• 5:31
  SPEAKER_00: Here is where the just take zinc narrative starts to fall apart.
• 5:35
  SPEAKER_00: Zinc, just like the other minerals, does not operate in isolation.
• 5:41
  SPEAKER_00: Zinc has a particularly significant antagonistic relationship with copper and to a lesser extent with iron and other minerals.
• 5:49
  SPEAKER_00: What that means in practical terms is that when zinc goes up, copper goes down.
• 5:54
  SPEAKER_00: This is a well established mineral physiology and is documented in mainstream nutrition literature, not controversial at all.
• 6:02
  SPEAKER_00: The mechanism is specific.
• 6:04
  SPEAKER_00: Zinc and copper compete for absorption at the same transporters in the intestinal lining.
• 6:10
  SPEAKER_00: When zinc intake is chronically elevated, those transporters preferentially absorb zinc and copper absorption is suppressed.
• 6:18
  SPEAKER_00: Over time, this creates a functional copper insufficiency, even if your copper levels look acceptable on a test.
• 6:25
  SPEAKER_00: Just like I mentioned in the last episode, copper is not a minor player.
• 6:30
  SPEAKER_00: Copper is required for dopamine to norepinephrine conversion, collagen crosslinking, iron transport, immune cell function, and antioxidant defense.
• 6:40
  SPEAKER_00: When copper is suppressed by chronically elevated zinc, every single one of those functions takes a hit.
• 6:46
  SPEAKER_00: The immune support paradox is that when a person is taking zinc supplements for immune support, they can end up with impaired immune function, not from a zinc deficiency, but from the copper deficiency that zinc supplementation created.
• 7:01
  SPEAKER_00: The immune system is not just zinc, it is zinc and copper and iron working together in balance.
• 7:07
  SPEAKER_00: Pull one out of the ratio and the whole system's affected.
• 7:10
  SPEAKER_00: With the zinc-copper ratio, the number alone doesn't tell you anything.
• 7:15
  SPEAKER_00: However, it is considered one of the most clinically significant numbers on the entire report.
• 7:20
  SPEAKER_00: It is more informative than either mineral in isolation.
• 7:23
  SPEAKER_00: The acceptable zinc-copper ratio in HTMA interpretation runs approximately four to eight.
• 7:30
  SPEAKER_00: When zinc is running significantly higher than copper relative to that range, the downstream functional picture includes impaired copper-dependent enzyme activity, disrupted neurotransmitter conversion, impaired collagen repair, and the hormonal pattern that mirrors copper insufficiency.
• 7:48
  SPEAKER_00: Here's what the numbers mean.
• 7:49
  SPEAKER_00: An acceptable range on an HTMA, as I mentioned before, is approximately four to eight.
• 7:55
  SPEAKER_00: Below four, the copper may be running disproportionately high.
• 7:59
  SPEAKER_00: Above eight, zinc is suppressing the copper availability.
• 8:04
  SPEAKER_00: Significantly above eight has downstream functional consequences and are likely affecting multiple systems.
• 8:10
  SPEAKER_00: You can have a zinc level that's inside the reference range and still have a zinc copper to ratio that's significantly elevated.
• 8:19
  SPEAKER_00: It's the ratio that captures the relationship.
• 8:22
  SPEAKER_00: The individual number does not.
• 8:24
  SPEAKER_00: This is why tissue level mineral testing tells you something that a standard blood panel cannot.
• 8:30
  SPEAKER_00: It shows you the ratios.
• 8:31
  SPEAKER_00: And the ratio is where the functional picture lives.
• 8:35
  SPEAKER_00: What does zinc imbalance actually feel like?
• 8:38
  SPEAKER_00: The symptom picture of zinc imbalance is not what most people expect.
• 8:42
  SPEAKER_00: Overt zinc deficiency produces a loss of taste and smell, impaired wound healing, frequent illness, and hair loss.
• 8:49
  SPEAKER_00: Those symptoms are real and well documented.
• 8:52
  SPEAKER_00: But the more common pattern in people who have been supplementing zinc without copper awareness is something more subtle and harder to connect at its source.
• 9:00
  SPEAKER_00: It can look like fatigue and low motivation.
• 9:03
  SPEAKER_00: When copper is suppressed and dopamine to norepinephrine conversion is impaired, the result is reduced drive, flat effect, and difficulty mobilizing.
• 9:14
  SPEAKER_00: This gets labeled burnout, depression, just being tired, not a mineral deratio problem.
• 9:19
  SPEAKER_00: It can be hormonal symptoms that don't fully respond to hormonal support, but when that ratio is significantly elevated, the functional pattern often mirrors estrogen relative deficiency, mood shifts, irregular cycles, low libido, and the sense that something hormonal is off, but labs keep coming back normal are all part of this picture.
• 9:40
  SPEAKER_00: It can be anxiety or mood instability.
• 9:42
  SPEAKER_00: Zinc modulates GABA and glutamate signaling.
• 9:45
  SPEAKER_00: When zinc is chronically elevated relative to other minerals, neurological excitability can increase.
• 9:52
  SPEAKER_00: This is not the presentation people associate with taking too much of a supplement.
• 9:56
  SPEAKER_00: Joint pain and poor tissue repair.
• 10:00
  SPEAKER_00: When copper is suppressed, lysyl oxidase, the enzyme that cross-links collagen, is impaired, and connected tissue accumulates wear without recovering efficiently.
• 10:10
  SPEAKER_00: Anemia that doesn't respond to iron.
• 10:12
  SPEAKER_00: High zinc can also suppress iron absorption.
• 10:15
  SPEAKER_00: When iron can't move properly and seroplasm is low, also due to copper insufficiency, the anemia picture gets complicated in a way that iron supplementation alone won't fix.
• 10:26
  SPEAKER_00: And then we can have the immune vulnerability despite supplementing zinc.
• 10:30
  SPEAKER_00: The person who has been taking zinc for years to protect their immune system and still get sick regularly may be experiencing exactly this pattern.
• 10:38
  SPEAKER_00: The zinc is there, the copper is not, and the immune system needs both.
• 10:43
  SPEAKER_00: Again, these symptoms don't scream a zinc problem.
• 10:46
  SPEAKER_00: They scream burnout, hormones, stress, anxiety, and the mineral connection is invisible unless you're specifically looking for it.
• 10:53
  SPEAKER_00: So how do we support the zinc balance?
• 10:56
  SPEAKER_00: The goal here is not to stop taking zinc.
• 10:58
  SPEAKER_00: The goal is to take zinc intelligently, with awareness of what it does to the mineral environment around it.
• 11:04
  SPEAKER_00: If you are supplementing zinc, you need to pay attention to copper.
• 11:09
  SPEAKER_00: General guidance and functional nutrition circles suggest a zinc to copper ratio and supplementation of approximately 8 to 1 to 15 to 1.
• 11:17
  SPEAKER_00: But this should be individualized based on testing and not assumed.
• 11:21
  SPEAKER_00: If you've been taking zinc for more than a few months without any copper consideration, this is worth looking at with a practitioner.
• 11:28
  SPEAKER_00: Food-based zinc is generally on a mineral balance.
• 11:31
  SPEAKER_00: Oysters are the most concentrated zinc food source by a significant margin.
• 11:36
  SPEAKER_00: Beef, pumpkin seeds, hemp seeds, and lentils are also solid contributors.
• 11:41
  SPEAKER_00: Food-based zinc comes in a matrix of cofactors that blunts the antagonistic effect on copper better than isolated supplements.
• 11:48
  SPEAKER_00: Please don't supplement zinc long term without testing.
• 11:52
  SPEAKER_00: Zinc supplementation for acute immune support during an illness is a different conversation than chronic daily zinc supplementation.
• 12:00
  SPEAKER_00: The latter warrants knowing what your tissue zinc level and your zinc copper ratio actually look like.
• 12:07
  SPEAKER_00: Address the mineral system, not the individual number.
• 12:10
  SPEAKER_00: If your zinc and copper ratio is elevated, adding more copper is not necessarily the answer either.
• 12:16
  SPEAKER_00: Not without understanding why the ratio shifted and what else is going on in the mineral environment.
• 12:21
  SPEAKER_00: This is where working with someone who can interpret the HTMA is so incredibly useful and important.
• 12:28
  SPEAKER_00: You don't fix one number in isolation.
• 12:31
  SPEAKER_00: You address the system that the number is embedded in.
• 12:34
  SPEAKER_00: So here's what I want you to take from this episode.
• 12:37
  SPEAKER_00: Zinc is essential and the immune support function is real.
• 12:42
  SPEAKER_00: There is significant research behind zinc and immune function, and I'm not here to tell you that zinc is bad or that you should stop taking it.
• 12:50
  SPEAKER_00: What I am here to tell you is that zinc does not operate in a vacuum.
• 12:54
  SPEAKER_00: It is in a constant antagonistic relationship with copper.
• 12:57
  SPEAKER_00: And when zinc runs chronically high, relative to the copper, whether it's from supplementation or from other factors, the downstream consequences include impaired immune function, impaired neurotransmitter synthesis, impaired hormone balance, and a symptom picture that looks nothing like I'm taking too much of a supplement.
• 13:17
  SPEAKER_00: When I looked at my own HTMA results, my zinc number was within the reference range.
• 13:22
  SPEAKER_00: On a standard panel, that would be a clean bill of health for zinc.
• 13:26
  SPEAKER_00: But that zinc to copper ratio was significantly elevated well outside the acceptable range.
• 13:32
  SPEAKER_00: That ratio told a different story that the individual number couldn't, and that pattern explained the cluster of symptoms I had been attributing to other things.
• 13:41
  SPEAKER_00: That's the value of looking at minerals relationally and not just individually.
• 13:46
  SPEAKER_00: The number is a data point.
• 13:47
  SPEAKER_00: The ratio is an entire story.
• 13:49
  SPEAKER_00: If this episode got your wheels turning, I'd love to hear about it.
• 13:53
  SPEAKER_00: Come find me on Instagram or shoot me the email.
• 13:56
  SPEAKER_00: I'm always interested in how people are connecting these dots to their own experience.
• 14:00
  SPEAKER_00: And if you haven't heard of the hair tissue mineral analysis and you're curious, I'll have resources in the show notes.
• 14:06
  SPEAKER_00: It's a hair sample, it's non-invasive, and the amount of information it gives you about your mineral status and the relationship between minerals is unlike anything you'll get from a standard blood panel.
• 14:18
  SPEAKER_00: It's worth knowing that it exists.
• 14:20
  SPEAKER_00: For me, it was a complete game changer.
• 14:22
  SPEAKER_00: In the next episode, we're staying in the mineral files.
• 14:25
  SPEAKER_00: Another mineral, another piece of the same puzzle.
• 14:28
  SPEAKER_00: Until then, be curious.
• 14:30
  SPEAKER_00: Ask better questions, and trust that your body's trying to tell you something.
• 14:34
  SPEAKER_00: It might just need a better translation tool.
• 14:36
  SPEAKER_00: Thanks for being here.