Topic

Nutrition

17 articles, newest first.

ResearchNutritionTelogen Effluvium
Biotin and Hair Loss: What the Evidence Actually Shows (It's Not What the Supplement Industry Tells You)
Biotin supplements for hair loss generate over $2 billion in annual sales. The evidence base for this billion-dollar market is thinner than most users suspect, and the cases where biotin genuinely helps are narrower than marketing implies.
Apr 23, 2026·28 days ago·Liam Foster
Telogen EffluviumResearchNutrition
Semaglutide and Hair Loss: What 18 Months of Real-World Data Shows
GLP-1 receptor agonists like semaglutide produce rapid weight loss, and a small but consistent fraction of users report telogen effluvium. The mechanism is now clearer.
Apr 8, 2026·about 1 month ago·Liam Foster
ResearchDHTNutrition
Saw Palmetto for Hair Loss: A Mechanism Without Clinical Evidence
Saw palmetto extract is in dozens of hair loss supplements. The 5-alpha reductase inhibition is real in vitro. The clinical evidence remains stubbornly thin.
Mar 20, 2026·2 months ago·Liam Foster
NutritionTelogen EffluviumResearch
Iron Supplementation for Hair Loss: Why Ferritin Below 70 Is the Real Threshold
Most physicians say ferritin within the normal range is fine. For hair loss, the relevant threshold appears to be substantially higher than the general anemia cutoff.
Mar 15, 2026·2 months ago·Dr. Maya Chen
NutritionResearchTelogen Effluvium
Vitamin D Deficiency and Hair Loss: The Causal Question Is Still Open
Vitamin D receptors are expressed on hair follicle cells, and deficient patients often have hair loss. Whether supplementation reverses the loss is a more complicated question.
Mar 10, 2026·2 months ago·Liam Foster
ResearchTreatmentNutrition
Scalp Massage: A 4-Minute Daily Protocol With Surprisingly Real Evidence
A 2016 Japanese study found that 4 minutes of daily scalp massage produced measurable hair thickening over 24 weeks. The follow-up survey of 327 men added a real-world dimension to the finding.
Mar 8, 2026·2 months ago·Dr. Maya Chen
ResearchNutritionDHT
Pumpkin Seed Oil for Hair Loss: A Surprising Trial With Replication Pending
A 2014 Korean trial reported substantial hair count improvements from oral pumpkin seed oil. The methodology was unusual and replication is overdue, but the mechanism is plausible.
Feb 19, 2026·3 months ago·Liam Foster
NutritionResearchFemale Pattern Hair Loss
Nutrafol Clinical Data: What the Trial Actually Showed
Nutrafol is the most expensively marketed hair loss supplement on the market. The trial data is real, but the trial design is unusual, and the effect size compared to alternatives is what matters.
Jan 26, 2026·4 months ago·Dr. Maya Chen
Telogen EffluviumNutritionResearch
Telogen Effluvium After Bariatric Surgery: What 5-Year Data Reveals
Significant weight loss after bariatric surgery triggers telogen effluvium in roughly half of patients. The long-term recovery data is more complicated than acute studies suggested.
Dec 4, 2025·6 months ago·Dr. Maya Chen
NutritionResearchTreatment
Vitamin K2 and Hair Loss: An Emerging Research Direction
Vitamin K2 has gained attention for bone and cardiovascular health. A few preliminary papers suggest possible relevance to hair biology, though the evidence is very early.
Sep 16, 2025·8 months ago·Dr. Maya Chen
NutritionResearchTreatment
Collagen Supplements for Hair: Marketing Disconnect From Evidence
Collagen supplements are marketed extensively for hair benefits. Hair is made of keratin, not collagen, and the evidence for any indirect benefit is thin.
Sep 11, 2025·8 months ago·Liam Foster
LifestyleResearchNutrition
Alcohol and Hair Loss: A Modest Connection With Practical Implications
Heavy alcohol consumption has multiple indirect effects on hair health. Moderate consumption probably doesn't matter, but heavy use does.
Aug 28, 2025·9 months ago·Liam Foster
NutritionTelogen EffluviumResearch
Selenium and Hair Loss: Why More Is Not Better
Selenium is essential for hair growth, but the therapeutic window is narrower than most supplements suggest. Both deficiency and excess cause hair loss.
Jul 23, 2025·10 months ago·Dr. Maya Chen
NutritionLifestyleResearch
Mediterranean Diet and Hair Loss: An Observational Association Worth Knowing
A 2018 case-control study reported reduced androgenetic alopecia in men following Mediterranean diet patterns. The mechanism is plausible but the evidence is observational.
Jul 18, 2025·10 months ago·Liam Foster
NutritionTelogen EffluviumResearch
Zinc Deficiency and Hair Loss: Less Common Than Marketing Suggests
Zinc deficiency causes hair loss when present, but true deficiency is uncommon in Western diets. The widespread inclusion of zinc in hair supplements isn't justified by population-level prevalence.
Jul 6, 2025·11 months ago·Dr. Maya Chen
Telogen EffluviumNutritionLifestyle
Hair Loss in Endurance Athletes: Energy Availability and Telogen Effluvium
Female endurance athletes with low energy availability frequently develop hair loss alongside other features of relative energy deficiency in sport (RED-S).
May 31, 2025·12 months ago·Liam Foster
Telogen EffluviumNutritionResearch
Hair Loss From PPI Use: A Connection With Plausibility but Modest Evidence
Long-term proton pump inhibitor use has been linked to telogen effluvium in some studies. The mechanism is plausible through micronutrient absorption effects.
May 24, 2025·12 months ago·Liam Foster

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Nutrition

Biotin and Hair Loss: What the Evidence Actually Shows (It's Not What the Supplement Industry Tells You)

Semaglutide and Hair Loss: What 18 Months of Real-World Data Shows

Saw Palmetto for Hair Loss: A Mechanism Without Clinical Evidence

Iron Supplementation for Hair Loss: Why Ferritin Below 70 Is the Real Threshold

Vitamin D Deficiency and Hair Loss: The Causal Question Is Still Open

Scalp Massage: A 4-Minute Daily Protocol With Surprisingly Real Evidence

Pumpkin Seed Oil for Hair Loss: A Surprising Trial With Replication Pending

Nutrafol Clinical Data: What the Trial Actually Showed

Telogen Effluvium After Bariatric Surgery: What 5-Year Data Reveals

Vitamin K2 and Hair Loss: An Emerging Research Direction

Collagen Supplements for Hair: Marketing Disconnect From Evidence

Alcohol and Hair Loss: A Modest Connection With Practical Implications

Selenium and Hair Loss: Why More Is Not Better

Mediterranean Diet and Hair Loss: An Observational Association Worth Knowing

Zinc Deficiency and Hair Loss: Less Common Than Marketing Suggests

Hair Loss in Endurance Athletes: Energy Availability and Telogen Effluvium

Hair Loss From PPI Use: A Connection With Plausibility but Modest Evidence