Functional Medicine Toronto Mindset: The Surprising Nutrient Behind Hair Loss

Hair loss isn’t always just about genetics or aging—sometimes, the root cause is surprisingly simple. Iron deficiency is an often-overlooked yet significant contributor to hair thinning in both men and women. At Toronto Functional Medicine Centre, we frequently see patients concerned about hair loss, and one of the first areas we investigate is iron status.

So, what does this mineral have to do with hair thinning or baldness? Multiple studies have shown a link between iron deficiency and various types of hair loss, including pattern baldness and telogen effluvium. In the eyes of functional medicine, this shows how nutritional shortcomings can manifest in unique ways. Here, we discuss iron’s role in hair growth for men and women, functional lab testing opportunities, and how we apply a personalized approach to nutrition. 

How exactly can iron deficiency cause hair loss?

First, you should know that hair follicles are metabolically-active tissues. This is because they need a constant supply of oxygen and nutrients to support growth during the anagen phase, which is the initial stage for hair growth. For this process, iron is vital for pushing oxygen transport and cellular energy production. 

Iron also helps synthesize DNA and proliferate cells, which are critical for dividing cells in the hair matrix. The hair matrix is a grouping of cells that help form the hair shaft, which is located above the skin surface. With inadequate iron levels, the body ends up prioritizing other essential organs over hair follicles. This can encourage hair to prematurely enter a ‘resting’ phase, which is when hair stops growing and begins shedding. 

Human studies have supported this connection between iron deficit and hair loss. In a study of patients with telogen effluvium (hair shedding due to bodily changes), serum ferritin levels were significantly lower in those with hair loss compared to healthy participants. This was a significant finding, as ferritin is a protein that acts like an iron reservoir for your body. It was concluded that low ferritin is linked to increased chances of hair loss and may also act as a diagnostic biomarker. Findings also revealed that you don’t need to have anemia to be diagnosed with low iron stores – low ferritin levels alone can negatively impact hair growth. 

Iron deficiency in women and men

Women are susceptible to forming iron deficiency, especially due to menstrual bleeding, pregnancy, and dietary changes. Scientists deem this may explain why long-term hair thinning is commonly reported in women. Perimenopause also puts females at risk for iron deficiency, as hormonal imbalances can lead to erratic blood loss.

Iron deficiency can contribute to hair loss in men, too. Though male hair loss is often triggered by androgens, nutrient deficiencies can act as compounding factors. Iron deficiency can potentially speed up a male’s current hair loss, worsen hair thinning, slow down growth, or degrade the health of follicles. 

Functional medicine protocol: The significance of comprehensive testing 

Functional integrative wellness practices may take a holistic health approach to thinning hair. This may involve tackling various components of wellness within a patient, like nutrient levels, hormone balancing strategies, and more. 

• At Toronto Functional Medicine Centre, understanding each patient’s unique biology is an essential part of exploring underlying root issues. A personalized approach often includes functional lab testing, which provides valuable insights to help guide individualized care recommendations. Markers such as ferritin may be assessed, as they are relevant when evaluating factors that can contribute to hair thinning. You may also choose to discuss these testing options with our functional medicine literate naturopathic doctor to determine what is appropriate for your individual health needs.
• A comprehensive diagnostic approach to hair shedding typically begins with foundational testing, such as a Complete Blood Count (CBC), to screen for anemia and other contributing factors. Additional lab testing may include assessment of ferritin and iron levels, as iron deficiency is commonly associated with temporary hair thinning and an increased shift of hair follicles into the shedding (telogen) phase.
• An inflammatory panel may also be considered as part of a root cause assessment. This testing evaluates markers such as erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP), which can help identify underlying inflammation. Chronic, low-grade inflammation is recognized as a potential contributor to hair loss, as it may disrupt the normal hair growth cycle and promote increased shedding. Because ferritin levels can be influenced by inflammation, interpreting these markers together is important for a more accurate understanding of iron status. This approach may be particularly helpful in cases of persistent or unexplained hair thinning, where chronic conditions or systemic inflammation could be contributing factors.

Treating iron deficiency without addressing underlying causes can lead to incomplete or temporary results. From a functional medicine perspective, iron deficiency is rarely an isolated root cause of hair loss—it often coexists with chronic stress, hormonal imbalances (including sex hormones and thyroid conditions), gut dysbiosis, and other nutrient deficiencies. Comprehensive lab testing is essential to identify these contributing factors and guide a more targeted, personalized treatment approach.

Replenishing iron levels with personalized patient care

Custom health care is based on your individuality, especially genetics/health history, allergies, absorption rate, and health goals. If your labs reveal an iron shortage, we would address this With a personalized approach, treatments can be tailored to address your specific needs and target what your body may be lacking. The effects can vary depending on the type and quantity of supplements used, and excessive intake may lead to unwanted side effects such as digestive discomfort or nausea. At the Toronto Functional Medicine Centre, your iron replenishment protocol may be comprised of: 

• Dietary modifications: Iron-rich animal-based proteins (such as chicken) may be recommended, as the body more readily absorbs iron from these sources (heme iron). For those following a plant-based diet, combining iron-rich foods with vitamin C–containing foods may be advised, as vitamin C can enhance the absorption of non-heme iron.
• Oral nutritional / botanical supplementation: Liquid and tablet formulas can be arranged with tailored doses. Long-term use may not be advised (it could cause iron overload), so it’s ideal to supplement with iron under the guidance of a qualified healthcare provider. 
• Intravenous therapy (IV vitamin  therapy): In certain cases, such as when oral supplementation is not well tolerated or absorption may be impaired, Iron IV therapy may be considered as it bypasses the digestive tract.Iron infusion therapy may be offered under appropriate medical supervision, based on individual clinical assessment.

If you are currently experiencing hair thinning, evaluating your nutrient status can be an important step. In functional medicine, hair loss is viewed not just as a cosmetic concern, but as a potential indicator of underlying imbalances, including iron deficiency. Please contact us for comprehensive testing and personalized care today.

Suggested reading: PANCs: Hidden Superfoods Supporting Human Health and the Planet — A Functional Medicine Toronto Fact Sheet

Discover our patient-centered approach to nutritional strategies and more 

Functional medicine does not seek ‘bandages’ to cover up health issues – it’s about exploring the root cause of pain, inflammation, and more. By understanding this, you can sustain optimal function for your uniqueness, encouraging lifelong wellness to naturally thrive. The functional medicine paradigm is suitable for managing several chronic conditions, especially those linked to insulin resistance, hormonal changes (i.e. menopause & perimenopause), muscle function, postpartum depression, and more. We also apply this paradigm to our other modalities, such as acupuncture, bio-identical hormone replacement therapy, and naturopathic medicine. 

Our nutritional strategies may be prescribed as  Traditional Chinese Medicine, or medicinal herbs, including botanicals inspired by traditional Amazonian plant medicine; IV vitamin therapy; intramuscular shots; and personalized supplementation. We customize doses to accommodate health goals and to avoid over-supplementation – these formulations are compounded by our clinic on a daily basis. 

Intravenous (IV) therapy is offered in our dedicated IV Lounge, where customized formulations are prepared in-house using carefully selected ingredients. Treatments are administered by trained healthcare professionals following established safety protocols, and patients are monitored throughout their session to support a safe and comfortable experience.

IV therapy, including iron infusions, is not intended to replace a balanced diet, appropriate supplementation, or medical care. Instead, it may be considered as part of a comprehensive treatment plan to support overall health and wellness. When combined with nourishing lifestyle modifications—such as a balanced diet, regular physical activity, stress management, and ongoing care with a qualified healthcare provider—IV therapy may play a supportive role in helping patients work toward their health goals.

Iron IV vitamin therapy can be tailored and accessed in our IV Lounge –If you’re ready to begin, you can book your initial assessment with Toronto Functional Medicine Centre by clicking here. 

Disclaimer: The information in this article is designed for educational purposes only and is not intended to be a substitute for informed medical advice or care. This information should not be used to diagnose or treat any health problems or illnesses without consulting a doctor. You should always consult with a health care practitioner before relying on any information in this article or on this website. Never delay or disregard seeking professional medical advice from your doctor or other qualified healthcare provider because of information you have read from the Toronto Functional Medicine Centre website or other affiliate media.

References

Academy of Nutrition and Dietetics. “Iron Deficiency.” EatRight.org, 23 Jan. 2020, www.eatright.org/health/essential-nutrients/minerals/iron-deficiency. Accessed 24 Mar. 2026.

Almohanna, H. M., Ahmed, A. A., Tsatalis, J. P., & Tosti, A. (2019). The role of vitamins and minerals in hair loss: A review. Dermatology and Therapy, 9(1), 51–70. https://doi.org/10.1007/s13555-018-0278-6

Cheng T, Fang H, Wang Y, Wang Y, Yang Z, Wu R, Yang D. The Diagnostic Value of Serum Ferritin for Telogen Effluvium: A Cross-Sectional Comparative Study. Clin Cosmet Investig Dermatol. 2021 Feb 10;14:137-141. doi: 10.2147/CCID.S291170. PMID: 33603430; PMCID: PMC7882421.

Deloche C, Bastien P, Chadoutaud S, Galan P, Bertrais S, Hercberg S, de Lacharrière O. Low iron stores: a risk factor for excessive hair loss in non-menopausal women. Eur J Dermatol. 2007 Nov-Dec;17(6):507-12. doi: 10.1684/ejd.2007.0265. Epub 2007 Oct 19. PMID: 17951130.

Guo, E. L., & Katta, R. (2017). Diet and hair loss: Effects of nutrient deficiency and supplement use. Dermatology Practical & Conceptual, 7(1), 1–10. https://doi.org/10.5826/dpc.0701a01

Karadag, A. S., Ertugrul, D. T., Tutal, E., & Akin, K. O. (2009). The role of anemia and iron deficiency in female hair loss. Journal of the American Academy of Dermatology, 61(2), 292–299. https://doi.org/10.1016/j.jaad.2009.03.008

Lynch SR, Cook JD. Interaction of vitamin C and iron. Ann N Y Acad Sci. 1980;355:32-44. doi: 10.1111/j.1749-6632.1980.tb21325.x. PMID: 6940487.

Martel JL, Miao JH, Badri T, et al. Anatomy, Hair Follicle. [Updated 2024 Jun 22]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK470321/

Moeinvaziri, M., Mansoori, P., Holakouee, K., Naraghi, Z. S., & Abbasi, A. (2009). Iron status in diffuse telogen hair loss among women. Acta Dermatovenerologica Croatica, 17(4), 279–284.

National Council on Aging. (2025, July 1). Hair loss statistics. https://www.ncoa.org/article/hair-loss-statistics/

Nguyen M, Tadi P. Iron Supplementation. [Updated 2023 Jul 3]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK557376/

Park SY, Na SY, Kim JH, Cho S, Lee JH. Iron plays a certain role in patterned hair loss. J Korean Med Sci. 2013 Jun;28(6):934-8. doi: 10.3346/jkms.2013.28.6.934. Epub 2013 Jun 3. PMID: 23772161; PMCID: PMC3678013.

Trost LB, Bergfeld WF, Calogeras E. The diagnosis and treatment of iron deficiency and its potential relationship to hair loss. J Am Acad Dermatol. 2006 May;54(5):824-44. doi: 10.1016/j.jaad.2005.11.1104. PMID: 16635664.

Zhou, Y., Li, H., Zhang, J., & Wang, X. (2021). Serum ferritin levels and risk of telogen effluvium: A cross-sectional comparative study. Clinical, Cosmetic and Investigational Dermatology, 14, 1501–1508. https://doi.org/10.2147/CCID.S330050

Original article "Toronto Functional Medicine Centre – (416) 968-6961" first appeared in the Toronto Functional Medicine Centre website.

Can Heavy Metals Cause Neurodegeneration? A Functional IV Therapy Toronto Report

Did you know that your nerve cells are in charge of the communications that happen in your brain and nervous system? These ‘messengers’ are called neurons. With age, they can slowly weaken in both form and function. Integrative functional medicine and IV therapy treatments from Toronto may be beneficial for supporting neuronal health, with the potential to prevent or delay neurodegeneration. 

Neurodegeneration is the gradual loss of structure and/or function of the neurons. It involves chronic injury to the neurons that can eventually lead to cell death. Unlike other cells, neurons are limited in their ability to regenerate. So once neuronal damage accumulates beyond a certain threshold, it can potentially impair cognitive function, movements, emotional regulation, and memory. You may already be familiar with some neurodegenerative conditions, such as Alzheimer’s disease, Parkinson’s, multiple sclerosis (MS) and amyotrophic lateral sclerosis (ALS). 

While genes can contribute to forming neurodegeneration, studies are postulating that heavy metal exposures can influence the onset and progression of neurodegeneration. We explain further in this new post from the Toronto Functional Medicine Centre. 

How are we exposed to heavy metals?

Industrialization has significantly boosted our interactions with heavy metals. These exposures can happen from:  

• Food and water: Mercury from predatory fish, arsenic in contaminated groundwater or rice, lead from old plumbing
• Air pollution: Industrial emissions, vehicle exhaust, cigarette smoke
• Occupational exposure: Mining, welding, manufacturing, 
• Household products: Cosmetics, cookware, some older paints

Heavy metals bioaccumulate – this means that they can collect in tissues quicker than the body can remove them. Thus, low chronic exposures can potentially be problematic for long-term health outcomes, especially if they impact the brain.

The role of heavy metals in neurodegeneration

There’s a chance that heavy metal accumulations can hinder neurological health. Here’s how: 

• May cause oxidative stress: Mercury and lead can overpower antioxidant defences in the brain, causing excessive amounts of reactive oxygen species (ROS). The brain is vulnerable to toxicities due to its high fat content and oxygen demand, and oxidative stress can damage neurons, DNA, and proteins.
• Heavy metals appear to cause mitochondrial dysfunction: Excessive heavy metals can impair the production of ATP (adenosine triphosphate) in the mitochondria, your body’s source of cellular energy. “As the brain consumes a large amount of energy, mitochondrial dysfunction and the subsequent decrease in levels of ATP may significantly disrupt brain function, resulting in neuronal cell death and ensuing neurological disorders,” reports an article from Toxics. 
• Could potentially trigger neuroinflammation: Heavy metals can cause cell death and activate microglia, the brain’s immune cells. Chronic neuroinflammation can be triggered by these exposures, which happens to be the hallmark of several neurodegenerative conditions, including Alzheimer’s and Parkinson’s.
• May promote abnormal protein folding: Proteins must fold into unique shapes in order to work properly. But research has shown that aluminum, iron, and mercury can promote abnormal protein folding. Specific misfolded proteins can contribute to forming beta-amyloid plaques, such as those in Alzheimer’s disease. 
• Heavy metals can disrupt the blood-brain barrier: Your body’s blood-brain barrier (BBB) is meant to protect the nervous system from any toxicities lurking in the blood. Some metals, like cadmium, can compromise the integrity of the BBB. This can allow for additional toxins and inflammatory molecules to enter the brain and potentially instigate neurological damage.

Actionable tips for prevention and support

Target heavy metal exposures can possibly help prevent or slow down neurodegeneration. Functional medicine involves addressing the root cause, which might be beneficial for managing neurodegenerative symptoms, like balance issues, irritability, and memory loss. Key strategies may include: 

• Functional medicine testing: Comprehensive heavy metal testing can identify which and how much toxins are affecting your health. Functional health practitioners then use these lab results to coordinate and dose your treatment plan. 
• Supporting detoxification: Targeted supplements, nutritional regimes, and lifestyle modifications may be advised for enhancing liver function, bile flow, and gut health.
• Reducing environmental exposures: You might be advised to use water filtration systems at home, make dietary changes, practice occupational safety measures, and look into using natural household products. 
• Adopting anti-inflammatory foods: A holistic nutritionist can help you boost your intake of antioxidants, omega-3 fatty acids, and phytonutrient-rich foods – these ingredients are advantageous for fostering detoxification. 
• Chelation treatments: Depending on your lab results, chelation therapy may be advised. This involves ingesting a chelating agent that binds to heavy metals for excrement. 
• Getting a prescription for IV vitamin therapy: In some cases, IV drip therapies may be part of a comprehensive treatment plan, especially for stimulating cellular repair. This may be advised if you’re struggling with absorption issues. Intravenous therapy can deliver high doses of antioxidants, like vitamin C and glutathione, to reduce oxidative stress. IV magnesium, B vitamins, and amino acids can also be administered to support mitochondrial functioning. Furthermore, detoxification can be further supported with IV therapy using NAC (N-acetylcysteine) to help support detoxification.

The fact that heavy metals can fast-track neurological decline is alarming – but we can take steps to help prevent or delay neurodegeneration. The integrative functional medicine approach can be explored to assist with early detection and brain health preservation. If you have concerns about environmental exposures, you should know that we’re currently accepting new patients. Let’s introduce you to our personalized framework for enhancing your wellness. 

Suggested reading: 8 Ways to Support the Body’s Natural Detoxification: An IV Therapy Toronto Fact Sheet

Request your consult for personalized therapies

Whether your goal is to reset your digestive system or boost mental clarity, the Toronto Functional Medicine Centre has got your back! Our wellness therapies – which include naturopathic medicine, acupuncture, cryotherapy, and more – adhere to the principles of integrative functional medicine, which means we adapt modalities for biological purposes. Our curated treatments are suitable for handling chronic conditions, especially for supporting cognitive function, bone and muscle function, changes to metabolic processes, and autoimmune diseases. 

We understand that navigating wellness can be a wavering experience – this is why our clinicians provide you with extended appointment times, helping you understand how to read lab reports, practice healthy habits at home, and know the rationales behind prescribed modalities. Targeted supplements can be picked up in our in-house dispensary, too, where we also coordinate botanical remedies into teas, topicals, oils, and more. 

IV drip therapies are administered in our IV Lounge and sessions are closely supervised by our health team. We can also prescribe intramuscular vitamin injections with vitamin D, glutathione, or B12 – ask us for more details anytime! Our IV therapy treatments are freshly blended with zinc sulfate, various B vitamins, amino acids, NAD+ (nicotinamide adenine dinucleotide), NAC, vitamin E, and more – and just like our other integrative functional medicine treatments, doses are personalized for key needs and goals. When intravenous therapy is interwoven with a healthy lifestyle and other formal health interventions (i.e. Western and/or naturopathic medicine), then they may be supportive for immune function, daily energy levels, and other general needs. 

Complementary holistic health modalities are available in our IV Lounge in Toronto. Begin your adventure towards optimal function now – simply click here to reach us in our Yorkville location.

Disclaimer: The information in this article is designed for educational purposes only and is not intended to be a substitute for informed medical advice or care. This information should not be used to diagnose or treat any health problems or illnesses without consulting a doctor. You should always consult with a health care practitioner before relying on any information in this article or on this website. Never delay or disregard seeking professional medical advice from your doctor or other qualified healthcare provider because of information you have read from the Toronto Functional Medicine Centre website or other affiliate media.

References

Cheng, Hong, et al. “Mechanisms of Metal-Induced Mitochondrial Dysfunction in Neurological Disorders.” Toxics, vol. 9, no. 6, 2021, p. 142, https://doi.org/10.3390/toxics9060142. Accessed 19 Dec. 2025.

Cooper GM. The Cell: A Molecular Approach. 2nd edition. Sunderland (MA): Sinauer Associates; 2000. Protein Folding and Processing. Available from: https://www.ncbi.nlm.nih.gov/books/NBK9843/

Ercal N, Gurer-Orhan H, Aykin-Burns N. Toxic metals and oxidative stress part I: mechanisms involved in metal-induced oxidative damage. Curr Top Med Chem. 2001 Dec;1(6):529-39. doi: 10.2174/1568026013394831. PMID: 11895129.

Jomova K, Alomar SY, Nepovimova E, Kuca K, Valko M. Heavy metals: toxicity and human health effects. Arch Toxicol. 2025 Jan;99(1):153-209. doi: 10.1007/s00204-024-03903-2. Epub 2024 Nov 20. PMID: 39567405; PMCID: PMC11742009.

Martínez-Hernández MI, Acosta-Saavedra LC, Hernández-Kelly LC, Loaeza-Loaeza J, Ortega A. Microglial Activation in Metal Neurotoxicity: Impact in Neurodegenerative Diseases. Biomed Res Int. 2023 Jan 31;2023:7389508. doi: 10.1155/2023/7389508. PMID: 36760476; PMCID: PMC9904912.

Pamphlett, Roger, and David P. Bishop. “The Toxic Metal Hypothesis for Neurological Disorders.” Frontiers in Neurology, vol. 14, 2023, p. 1173779, https://doi.org/10.3389/fneur.2023.1173779. Accessed 19 Dec. 2025.

Peña-Bautista, Carmen, et al. “Stress and Neurodegeneration.” Clinica Chimica Acta, vol. 503, 2020, pp. 163-168, https://doi.org/10.1016/j.cca.2020.01.019. Accessed 18 Dec. 2025.

Richardson B, Goedert T, Quraishe S, Deinhardt K, Mudher A. How do neurons age? A focused review on the aging of the microtubular cytoskeleton. Neural Regen Res. 2024 Sep 1;19(9):1899-1907. doi: 10.4103/1673-5374.390974. Epub 2023 Dec 15. PMID: 38227514; PMCID: PMC11040321.

Robertson, Sally. “What is Neurodegeneration?” News-Medical, 12 Aug. 2022, www.news-medical.net/health/What-is-Neurodegeneration.aspx. Accessed 18 Dec. 2025.

Przedborski, Serge, et al. “Series Introduction: Neurodegeneration: What Is It and Where Are We?” Journal of Clinical Investigation, vol. 111, no. 1, 2003, p. 3, https://doi.org/10.1172/JCI17522. Accessed 18 Dec. 2025.

Tamás, Markus J., et al. “Heavy Metals and Metalloids As a Cause for Protein Misfolding and Aggregation.” Biomolecules, vol. 4, no. 1, 2014, p. 252, https://doi.org/10.3390/biom4010252. Accessed 19 Dec. 2025.

Wu, Di, et al. “The Blood–Brain Barrier: Structure, Regulation and Drug Delivery.” Signal Transduction and Targeted Therapy, vol. 8, no. 1, 2023, p. 217, https://doi.org/10.1038/s41392-023-01481-w. Accessed 19 Dec. 2025.

Zahoor SM, Ishaq S, Ahmed T. Neurotoxic effects of metals on blood brain barrier impairment and possible therapeutic approaches. Vitam Horm. 2024;126:1-24. doi: 10.1016/bs.vh.2024.04.003. Epub 2024 May 21. PMID: 39029969.

Original article "Toronto Functional Medicine Centre – (416) 968-6961" first appeared in the Toronto Functional Medicine Centre website.