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The story of the week · Detox

The microplastic study everyone's sharing — what really matters

The headlines are loud. Here's the root-cause read: what the data actually shows, the five swaps that lower your body burden this week, and the one thing not to panic about.

8 min read · Updated today · Reviewed by the medical advisory board
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The Health Wire

Breaking now
Study decoded · EmergingBlack Seed Oil Left Overall Gut Microbiome Stable In 8-Person Pilot StudyA small human trial shows Nigella sativa (black seed) oil didn't disturb overall gut bacterial diversity while nudging a few specific species, and its active compound turned up in urine after three weeks of daily capsules.33m agoStudy decoded · ConfirmedGut Microbiome Maturation Pattern Linked to Threefold Higher Type 1 Diabetes Risk in ChildrenA six-year study of high-risk children found that how gut bacteria mature in the first two years, not just which bacteria are present, predicts type 1 diabetes risk years later.37m agoStudy decoded · EmergingMeta-Analysis Finds Probiotics Linked To Large Cognitive Score Effect In Older AdultsA new review pooling 24 trials suggests probiotic and synbiotic supplements may move memory-test scores in older adults, though the evidence swings hard when individual studies are removed.40m agoStudy decoded · EmergingDietitian-Led Nutrition Program Linked to Lower Mortality in Malnourished SeniorsA structured, dietitian-led nutrition program was linked to fewer deaths and shorter hospital stays in the frailest older patients, though the effect didn't hold up statistically after correction for multiple comparisons.YesterdayStudy decoded · ConfirmedFour Week Diet Shift Lowers Biological Age Markers In Older AdultsA short diet swap moved cholesterol, insulin, and inflammation markers enough to lower a calculated biological age score in older adults within a month.YesterdayStudy decoded · EmergingTwo Days Of Food Recalls Capture Main Dietary Patterns In 302 AdultsIf you're trying to figure out whether your diet leans Western, Traditional, or Prudent, this study suggests just two honest days of food logging can show you.2 days agoStudy decoded · EmergingIndividualized Milk Fortification Shows No Growth Benefit For Preterm InfantsParents of preterm babies want to know if a fancy bedside milk test beats standard NICU fortification, and this five-year trial says no.2 days agoStudy decoded · EmergingWhole Grain Intake Of 60 To 100 Grams Daily Tied To Heart Marker GainsA massive review of 87 trials pinpoints how much whole grain actually moves cholesterol, blood pressure and blood sugar.2 days agoStudy decoded · EmergingKetogenic Diet Controls Seizures Within Two Weeks In Infant With Rare Metabolic DisordersA single case report shows a classic ketogenic diet helping control drug-resistant seizures in an infant with two rare inherited metabolic disorders, giving families facing genetic epilepsy a specific option to raise with specialists.2 days ago
Research Decoded

New studies. Same seven questions.

What they studied, what they found, what they didn't, how strong the evidence is, and what — if anything — to do. Every study linked.

Research Decoded

The creatine-and-memory trial

Nutrients, 2026 · n=112 · 12 weeks · randomized, placebo-controlled
What they found
Modest but measurable gains in working memory in older adults on 5 g/day creatine monohydrate.
What they didn't
Small sample, short duration, one cognitive domain. Effects were strongest in those with low dietary creatine.
What to do
If you're over 60 and eat little meat, 3–5 g of monohydrate daily is safe and cheap. Don't expect a transformation; expect a nudge.
Evidence strengthModerate
Ask Dr. Axe what it means for you →
Research Decoded

The GlyNAC mitochondrial study

Clinical Nutrition, 2026 · n=24 · 16 weeks · randomized
What they found
Glycine plus NAC raised glutathione and improved oxidative stress, inflammation and insulin-resistance markers toward younger values.
What they didn't
Very small trial. Markers, not outcomes. Doses were high (studied under supervision).
What to do
Interesting for anyone with low glutathione or high oxidative stress on labs; talk to a practitioner about dosing rather than copying the study.
Evidence strengthEmerging
Ask Dr. Axe what it means for you →
Research Decoded

Fermented foods vs high-fiber diet

Cell, 2021 (re-analysis 2026) · n=36 · 10 weeks
What they found
Fermented foods increased microbiome diversity and lowered inflammatory markers; high fiber did not, in this window.
What they didn't
Ten weeks is short for fiber to show benefits; the fermented arm was intensive (six servings a day).
What to do
Add one fermented food a day and work up. Keep the fiber — the two aren't rivals.
Evidence strengthModerate
Ask Dr. Axe what it means for you →
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1Brain HealthADHD: Symptoms, Causes, Tests, Medication and Natural TreatmentA physician's evidence-based guide to attention-deficit/hyperactivity disorder in children and adults. What ADHD is, the symptoms by age, what drives it, how it's diagnosed, the medication tradeoffs, and the six-step Dr. Axe ADHD Action Plan for diet, sleep, movement and nutrients.2ConditionsLeaky Gut: Symptoms, Root Causes, Testing & the 6R Healing ProtocolWhat increased intestinal permeability actually is, why zonulin changed everything, the six drivers behind it, how it cascades into autoimmunity, and the complete six-phase protocol I've used with thousands of patients — foods, supplements, lifestyle, testing and troubleshooting.3Diets & PlansKeto Diet: Benefits, Food List, 7-Day Meal Plan & How to StartA doctor's complete guide to the ketogenic diet — how ketosis works, what to eat, what the research really shows for everything from epilepsy to weight loss, a 7-day healing meal plan, the supplements that matter, and the way I've used keto with patients for 20 years.4Supplements & HerbsBPC-157 Benefits: Healing, Gut Repair & RecoveryBPC-157 is one of the most remarkable regenerative peptides we have — a cellular messenger, modeled on a compound your own gut makes, that helps the body repair tendons, ligaments, muscle, and the intestinal lining. Here's how it works, what the research and clinical experience show, how it compares to TB-500, and how to use it responsibly.5ConditionsSIBO: Symptoms, Causes, Diet, Tests & TreatmentA physician's evidence-based guide to small intestinal bacterial overgrowth (SIBO) — the symptoms, the three types, what causes it, how it's tested, and the diets, supplements, and treatments that have real evidence behind them.6Diets & PlansThe Biblical Diet: Foods, Benefits & What the Bible Says About EatingThe world’s oldest health plan is hiding in plain sight. Here is what the Bible truly says about food — the foods named most, the conditions this way of eating supports, and how it stacks up against Paleo, Mediterranean, and Kosher.7Supplements & HerbsCreatine: Benefits, Uses, Dosage & Side EffectsA physician's evidence-based guide to creatine — the most-researched supplement in sports nutrition, what it does in the body, and how to use it for muscle, healthy aging, and the brain.8HealthChildren's Health: A Parent's Guide to Nutrition, Immunity, Sleep, Screens and SupplementsMost of what protects a child's health is decided at your kitchen table, at bedtime and on the playground. This guide covers what growing kids need from food by age, how to build an immune system that holds up through the school year, how much sleep children need, what the American Academy of Pediatrics says about screens, which supplements are reasonable for kids and which are not, and when a symptom belongs in front of a pediatrician.

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