Does Creatine Cause Hair Loss? What the Studies Show
Where the worry about creatine and hair loss came from, what a 2025 trial that measured hair found, and what the studies cannot tell you yet.
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Clear guides to supplement ingredients, labels and everyday questions. Explore the evidence, compare options and find reviews that help you decide.
Biotin and Blood Tests: What to Tell Your Lab
Biotin can make some lab tests read falsely high or falsely low. Here is what the NIH and FDA say, which tests are named, and what to tell your clinician and the lab before a blood draw.
Trans-Resveratrol vs. Resveratrol: Reading the Label
Trans-resveratrol is one of two forms of resveratrol. Learn what trans, cis and standardized to a percent mean on a label, why absorbed is not the same as available, and which cautions to know.
Sea Moss and Iodine: What the Label Can't Tell You
Sea moss labels list seaweed weight, not iodine. A 2021 study found 5 to 5,600 mcg of iodine per daily dose in seaweed supplements. Here is how to read the label and add up your sources.
Can You Make Vitamin D From the Sun in Winter?
Whether winter sun makes vitamin D depends on latitude. A 1988 study found none from November through February in Boston and from October through March in Edmonton. Here is what else blocks it.
Elderberry, Zinc and Vitamin C: What Cold-Season Studies Show
Cochrane reviews found vitamin C and zinc did little to prevent colds and may shorten them in some trials; the NIH calls elderberry research preliminary. Here is how a combination label compares.
Vitamin B12 and Energy: When Extra B12 May Not Help
Vitamin B12 is needed for energy metabolism, but the NIH says extra B12 does not appear to help performance without a deficiency. Here is who runs low and how to read a B-complex label.
Lion's Mane Labels: Extract Ratios, Fruiting Body and Mycelium
A lion's mane extract ratio like 10:1 compares starting material with finished extract by weight. Here is what it leaves out, how to read the part used and the blend, and what the studies tested.
Ubiquinol vs. Ubiquinone: What CoQ10 Studies Actually Compare
Ubiquinone and ubiquinol are two forms of CoQ10. Small studies compared blood levels after each form, with mixed results. Here is what they measured, what they did not, and the safety notes.
Ashwagandha for Stress and Sleep: What Studies Can Tell Us
Small trials of ashwagandha extracts found lower stress scores and some sleep gains over 6 to 12 weeks. Here is what was measured, why doses vary, and the safety cautions.
Turmeric vs. Curcumin: What Changes in a Supplement?
Turmeric is the whole root; curcumin is one compound inside it. Here is how root powder, 95% curcuminoid extracts and black pepper extract differ on a label, and what changes for safety.
Marine vs. Bovine Collagen: Sources, Labels and Allergens
Compare marine and bovine collagen sources, serving amounts and allergens, and learn what absorption and skin studies can actually tell you.
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