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Why Hair Loss Is No Longer Just Genetic
Why Hair Loss Is No Longer Just Genetic
Nutrient Deficiencies, Telogen Effluvium & the Lifestyle Link
By Dr Chung Wan Ling | IYAC Aesthetic Clinic
Hair loss often feels sudden — but it rarely is. In our clinic, we’re seeing more patients noticing thinning not in their 50s or 60s, but in their 30s and even late 20s. Often, it’s not due to genetics alone. Instead, hair loss today is frequently a reflection of modern-day nutritional deficiencies, chronic stress, and ultra-processed eating patterns, including popular local fare such as zi char and hawker staples.
These quiet disruptors can trigger telogen effluvium — a common form of diffuse shedding — which, if sustained, can unmask or accelerate pattern hair loss (androgenetic alopecia) in genetically susceptible individuals. The good news? With the right investigations and early interventions, this process is modifiable and, in many cases, reversible.
The Telogen Effluvium–Pattern Hair Loss Cascade
Telogen Effluvium (TE) occurs when a significant number of hair follicles prematurely shift from the growing phase (anagen) into the resting phase (telogen), resulting in increased shedding after a delay of 2–3 months. TE is often triggered by:
- Nutritional deficiencies – commonly Vitamin D (both genders) and iron (ladies)
- Physical or psychological stress
- Sudden hormonal changes
- Illness or medications
- Crash diets or fasting or weight loss – especially with the weight loss injections
- Chronic inflammation – including scalp inflammation such as from seborrheic dermatitis or dandruff
In those with a genetic predisposition, repeated or prolonged TE may hasten androgenetic alopecia (pattern hair loss). The key turning point? When temporary shedding becomes miniaturisation of the hair follicle, leading to finer, weaker strands of hair and slower regrowth.
The Role of Diet: Hawker Food, Convenience & Nutrient Gaps
Singapore’s food culture is rich — but it also leans heavily on ultra-processed, refined meals. Hawker fare, fast-casual takeaways, and grab-and-go snacks are often:
- Low in iron-rich whole foods
- Deficient in Vitamin D
- Imbalanced in omega-6 vs. omega-3 fatty acids
- High in inflammatory seed or vegetable oils, preservatives, and sugars
- Lacking in absorbable protein and micronutrients essential for follicle activity
These gaps may not cause symptoms immediately but can set the stage for biochemical depletion that impacts the hair cycle. Over time, this “silent erosion” of nutrients compromises follicle strength, resilience, and growth rate.
The Two Nutrients Everyone Should Track
1. Iron (Ferritin)
Hair follicle matrix cells are among the fastest-dividing in the body. They require iron to function optimally — not just for oxygen transport, but also for energy metabolism and DNA synthesis. Even without anaemia, low ferritin is a well-documented driver of TE.
Optimal range for hair health: Ferritin ≥ 80 ng/mL
Menstruating ladies, vegetarians, and endurance athletes are particularly at risk.
2. Vitamin D
Vitamin D receptors are active in the hair follicle and help regulate the growth cycle. Low Vitamin D has been associated with both TE and pattern hair loss in emerging clinical research.
Optimal range for hair health: 50–75 ng/mL
Despite being in the tropics, Vitamin D deficiency is common in Singapore due to sun avoidance, sunscreen use, and indoor lifestyles.
Other Factors That Worsen Hair Shedding:
- Low protein intake (especially with restrictive eating, weight loss injections)
- Poor gut health, which impairs nutrient absorption
- Chronic inflammation (from processed oils, refined carbs, or underlying disease)
- Stress hormones (cortisol dysregulates the follicular cycle)
These don’t just slow growth — they can weaken the follicular microenvironment, tipping borderline cases into progressive loss.
What You Can Do: Test, Restore, Support
Hair restoration begins before regrowth — with identifying and addressing the underlying drivers.
✅ Get Tested Annually
We recommend including the following in your yearly check-up if you’re experiencing ongoing hair loss or are at risk:
- Ferritin
- Vitamin D
- Vitamin B12
- Zinc
- Thyroid panel
- hs-CRP (marker of inflammation)
At IYAC, these and more are included in our Wellness Nutrition Screen, a set of blood tests designed to detect subtle deficiencies that affect hair, skin and energy.
✅ Restore & Supplement Mindfully
Once tested, correction can begin:
- Iron supplementation (oral or IV), guided by your results
- Vitamin D3 (with K2 to aid absorption and reduce calcification)
- Targeted nutritional support, ideally from bioavailable, practitioner-grade formulas
- Diet coaching to optimise protein, iron, and anti-inflammatory foods
Patients often notice reduced shedding and improved scalp density within 12–16 weeks of correction — and even sooner when paired with root-supportive therapies like Hair CPR.
While nutrition lays the foundation, in-clinic treatments can significantly accelerate regrowth. At IYAC, we often recommend Hair CPR alongside supplementation — a 45-minute, needle-free treatment that uses five synergistic technologies to boost blood flow, deliver growth factors, and awaken dormant follicles. It feels like a relaxing head massage, yet works at the cellular level to support biological repair and visible results.
Introducing Proteoglycan Replacement Therapy
Beyond nutrition, one promising adjunct is proteoglycan replacement therapy – this is a non-drug, hormone-free supplement that supports the follicle environment.
Proteoglycans are critical extracellular matrix components that regulate the hair growth cycle. During periods of stress or ageing, their levels drop, weakening the follicle’s ability to remain in the growth (anagen) phase.
At IYAC, we do carry a patented form of proteoglycan that has been clinically validated, with over 30 years of research in pattern hair loss and TE. It’s enriched with biotin, silica & Vitamin C for additional collagen and keratin support.
Recommended for 6 months minimum, it is suitable for:
- Diffuse or early-onset thinning
- Postpartum hair loss
- Hair shedding related to dieting or illness
A Functional, Preventive Approach to Hair Loss
At IYAC, our approach to hair loss is not just cosmetic — it’s root-cause driven and regenerative.
It includes:
- Personalised blood testing
- Nutritional and gut health optimisation
- Proteoglycan therapy and hair-specific supplementation
- Oral medications (as needed)
- Clinic therapies such as Hair CPR and Autologous Micrograft Technology (AMT)
- Ongoing progress tracking via trichoscopy and high-resolution scalp imaging
Hair regrowth doesn’t happen overnight — but with the right interventions, your follicles can recover and re-enter a stronger, more productive phase.
Final Takeaway
Hair loss is a visible symptom of invisible imbalances. For many, it’s the first sign the body’s reserves are running low. Rather than masking the issue, we encourage early action: test your nutrient levels, support your root cycle, and nourish your body from within.
The earlier you intervene, the more hair you can preserve — and the better you’ll feel in your skin.
Contact IYAC to schedule your consultation and take control of your hair health journey today.
