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The newest health studies and headlines, decoded: the key numbers, how strong the evidence is, and Dr. Axe’s take on what to do.

The Health Wire

The latest health headlines, the evidence behind them, and Dr. Axe’s Take.

19 stories on this page

Tuesday, September 22, 2026

Nutrient Deficiency Rate: 23.2% With Counseling vs 14.8% Without

Nutrient Deficiency Rate: 23.2% With Counseling vs 14.8% Without2,031 teens ages 10-17 on GLP-1 drugs, tracked for 1 year. Received nutrition counseling: 23.2 %; No nutrition counseling: 14.8 %2,031 teens ages 10-17 on GLP-1 drugs, tracked for 1 year
23.2%
RECEIVED NUTRITION COUNSELING
14.8%
NO NUTRITION COUNSELING
Childhood Obesity, 2026
Emergingstudy decodedNew

Nearly 17% of Teens on GLP-1 Drugs Develop Nutrient Deficiency Within a Year

A new claims-data study finds that many teens prescribed GLP-1 weight-loss drugs are missing nutrition counseling while nutrient deficiencies quietly climb.

If a GLP-1 medicine is prescribed, Dr. Axe’s approach is a 10–20% micro-dose with protein and resistance training. Discuss any prescription change with your clinician.

  • 2,031 Teens Studied
  • 16.88% Had Deficiency
  • 12.4% Vitamin D Deficiency
Dr. Axe's Take

This does not surprise me. GLP-1 drugs work by shutting down appetite, and a child eating dramatically less will take in less of everything, including vitamin D, iron and B12. A 12.4% vitamin D deficiency rate after one year on these drugs, in teens with no prior deficiency diagnosis, is a warning sign. I don't take a position on the medication itself, beyond using the minimum dose possible with the prescribing doctor. Around it, I want a diet high in protein, fiber and nutrient-dense foods, quality vitamins and supplements, and ideally knowing your child's vitamin D, iron and B12 levels.

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Monday, September 21, 2026

A close-up of many raw almonds piled together.
EpisodeFrom the ShowNew

Dr. Axe Ranks Seven Cortisol-Lowering Strategies With Evidence Scores

In a new episode, Dr. Axe scores seven cortisol-lowering habits by evidence and impact and cites specific numbers for sleep, magnesium, ashwagandha and morning light.

  • 7 Cortisol Strategies
  • Sleep Scores 10/10
  • 44% Stress Drop: Magnesium
Dr. Axe's Take

Sleep is the lever I'd pull first. A single night of four hours drives cortisol up 37% the next day, and that kind of spike compounds if it keeps happening. I tell people to protect a consistent wake time and a wind-down window before bed rather than reaching for a supplement first. Once sleep and morning light are dialed in, I add two minutes of slow exhale-focused breathing or gargling to calm the vagus nerve. For added support, I've recommended ashwagandha at 300 to 600 milligrams daily, split into two doses, on top of those foundational habits.

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UA-30 Extends Mean Survival to 171.5 Days vs 161.9 Days in ALS Mice

UA-30 Extends Mean Survival to 171.5 Days vs 161.9 Days in ALS MiceSOD1G93A mice, oral UA-30 100 mg/kg vs untreated. UA-30 treated: 171.5 days; Untreated: 161.9 daysSOD1G93A mice, oral UA-30 100 mg/kg vs untreated
171.5 days
UA-30 TREATED
161.9 days
UNTREATED
Journal of Clinical Investigation, 2026
Confirmedstudy decodedNew

Modified Urolithin A Compound Extends Survival, Improves Movement in ALS Mice

A lab-modified version of a compound gut bacteria make from pomegranates and berries extended lifespan and restored movement in mice with ALS-like disease by fixing broken cellular cleanup machinery.

  • ALS Mouse Study
  • 8.5-Day Survival Gain
  • Mitophagy Restored
Dr. Axe's Take

This tracks with core ALS biology: mitochondria wear out and never get cleared, and UA-30 restores the cleanup crew — PINK1 and Parkin — through a pathway involving RalA and FOXO3a. UA-30 is a synthetic drug candidate, not a supplement, and I would not chase urolithin A products expecting the same effect, since researchers built UA-30 specifically because natural urolithin A barely reaches the brain. For mitochondrial support today, eat polyphenol-rich foods — pomegranate, walnuts, berries — to feed the gut bacteria that make urolithin A, and keep moving; exercise independently supports mitophagy.

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Type 1 Diabetes Risk by Gut Microbiome Maturation Pattern (887 Children)

Type 1 Diabetes Risk by Gut Microbiome Maturation Pattern (887 Children)TEDDY cohort, 887 children, up to 6 years follow-up. Early Plateaued: 1.52 cases per 1,000 person-months; Late Matured: 0.95 cases per 1,000 person-months; Early Matured: 0.86 cases per 1,000 person-monthsTEDDY cohort, 887 children, up to 6 years follow-upEarly Plateaued1.52 cases per 1,000person-monthsLate Matured0.95 cases per 1,000person-monthsEarly Matured0.86 cases per 1,000person-months
Nature Metabolism, 2026, Dong et al.
Confirmedstudy decodedNew

Gut Microbiome Maturation Pattern Linked to Threefold Higher Type 1 Diabetes Risk in Children

A 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.

  • 887 children, 6-year study
  • 3x higher T1D risk
  • Gut bacteria maturation pattern
Dr. Axe's Take

This tells me timing matters as much as which bacteria show up. A gut microbiome that gets stuck in a low-diversity holding pattern, dominated by early colonizers instead of maturing into a richer mix, tracks with a much higher type 1 diabetes risk in genetically vulnerable kids. For parents, I'd prioritize breastfeeding as long as reasonably possible, introduce a wide variety of whole, fiber-rich foods once solids start, and avoid unnecessary antibiotics in the first two years. Fermented foods like kefir and sauerkraut can help diversify a toddler's gut community. Keep well-child visits and recommended screening on schedule.

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1 species increased, 5 species decreased after 20 days of black seed oil in 8 adults

1 species increased, 5 species decreased after 20 days of black seed oil in 8 adults8 adults (4 treatment, 4 control) over 20 days. Species increased: 1 species; Species decreased: 5 species8 adults (4 treatment, 4 control) over 20 days
1 species
SPECIES INCREASED
5 species
SPECIES DECREASED
Scientific Reports, 2026, El-Banna
Emergingstudy decodedNew

Black Seed Oil Left Overall Gut Microbiome Stable In 8-Person Pilot Study

A 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.

  • Black seed oil
  • Gut microbiome stable
  • 8 adults, 20 days
Dr. Axe's Take

This tells me black seed oil doesn't disrupt the gut microbiome even at repeated doses, which fits centuries of use in Ayurvedic and Unani medicine, but four people in each group and no placebo means I would not call this proof of a gut benefit. The detail I find useful is that a short-chain-fatty-acid producer increased while a species recently linked to primary ovarian insufficiency in other research decreased, though this pilot did not test reproductive or hormone outcomes. I would use black seed oil as a food-based addition alongside real fiber and fermented foods like kefir or sauerkraut, not as a stand-alone fix. Keep taking any prescribed medication as directed and talk with your doctor before adding it.

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Probiotic Studies: Effect Size 1.02 For Memory, 0.46 For Grip Strength

Probiotic Studies: Effect Size 1.02 For Memory, 0.46 For Grip StrengthIn 1,809 older adults across 24 trials (11 pooled). Mini-Mental State Exam: 1.02 Hedges' g; Handgrip Strength: 0.46 Hedges' gIn 1,809 older adults across 24 trials (11 pooled)Mini-Mental StateExam1.02 Hedges' gHandgrip Strength0.46 Hedges' g
Frontiers in Nutrition, 2026 systematic review and meta-analysis
Emergingstudy decodedNew

Meta-Analysis Finds Probiotics Linked To Large Cognitive Score Effect In Older Adults

A 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.

  • 1,809 adults, 24 trials
  • MMSE effect: 1.02
  • Handgrip effect: 0.46
Dr. Axe's Take

I read this as an early signal, not proof. A large average effect on a memory test sounds impressive until it collapses toward meaningless the moment one study drops out of the analysis — that tells me the current evidence is fragile, especially for people with mild cognitive decline rather than diagnosed Alzheimer's. I still think feeding gut microbes matters for brain and muscle health as we age, since gut and brain communicate constantly. My advice this week is food first: work in fermented foods like kefir, sauerkraut and kimchi alongside fiber-rich vegetables, since fiber feeds the microbes already in your gut and fermented foods bring their own.

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Saturday, September 19, 2026

Malnourished Patients: In-Hospital Mortality Odds Ratio 0.45 vs Comparison Wards

Malnourished Patients: In-Hospital Mortality Odds Ratio 0.45 vs Comparison Wards17,057 human hospital patients, malnourished subgroup n=2,182. Framework wards: 0.45 odds ratio; Comparison wards: 1 odds ratio17,057 human hospital patients, malnourished subgroupn=2,182
0.45 odds ratio
FRAMEWORK WARDS
1 odds ratio
COMPARISON WARDS
JAMA Network Open, 2026
Emergingstudy decodedNew

Dietitian-Led Nutrition Program Linked to Lower Mortality in Malnourished Seniors

A 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.

  • 55% Lower Mortality Odds
  • 2,182 Malnourished Patients
  • 13% Shorter Hospital Stay
Dr. Axe's Take

The pattern here makes sense to me physiologically: malnourished older adults have less reserve to fight infection and heal from illness, so a system that catches this early and rechecks calorie and protein intake twice a week should show up in outcomes. The number needed to treat, one fewer death for every 12 to 16 malnourished patients treated this way, is a meaningful signal. If you have an aging parent hospitalized, ask whether a registered dietitian has assessed them and how often they will be reassessed. At home, prioritizing protein-dense foods and bone broth before a hospital stay ever happens is the more powerful move you can make.

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Omnivorous High-Carbohydrate Diet Macronutrient Breakdown Over 4 Weeks

Omnivorous High-Carbohydrate Diet Macronutrient Breakdown Over 4 Weeks104 adults aged 65-75, 4-week diet, protein held at 14 percent. 53% carbohydrate104 adults aged 65-75, 4-week diet, protein held at 14percent53% carbohydrate
Aging Cell, 2026, Andrews et al.
Confirmedstudy decodedNew

Four Week Diet Shift Lowers Biological Age Markers In Older Adults

A short diet swap moved cholesterol, insulin, and inflammation markers enough to lower a calculated biological age score in older adults within a month.

  • 4-week trial
  • 104 adults 65-75
  • 3 of 4 diets responded
Dr. Axe's Take

A four-week diet change moving calculated biological age markers is a meaningful signal, not proof of slower aging. Cholesterol, fasting insulin, and CRP, the markers driving this result, respond quickly to a shift away from animal fat and toward plant protein and complex carbohydrates like lentils, quinoa, and sweet potato. I would not wait for a longer trial to test this on myself. Cut back red meat and processed animal fat for a few weeks, add more plant-based protein, and get a basic panel, cholesterol, fasting insulin, and CRP, before and after so you can see your own numbers move rather than guess.

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Source: ScienceDaily · Sep 15, 2026Ask Dr. Axe about this →

Total Protein Intake: 4.58 vs 4.47 g/kg/day, No Growth Difference Found

Total Protein Intake: 4.58 vs 4.47 g/kg/day, No Growth Difference Found130 very preterm infants, single-center NICU trial. Control group: 4.58 g/kg/day; Intervention group: 4.47 g/kg/day130 very preterm infants, single-center NICU trial
4.58 g/kg/day
CONTROL GROUP
4.47 g/kg/day
INTERVENTION GROUP
JAMA Pediatrics, 2026
Emergingstudy decodedNew

Individualized Milk Fortification Shows No Growth Benefit For Preterm Infants

Parents of preterm babies want to know if a fancy bedside milk test beats standard NICU fortification, and this five-year trial says no.

  • 130 Preterm Infants
  • 5-Year NICU Trial
  • No Growth Difference
Dr. Axe's Take

Standard fortification protocols in a well-run NICU already push preemies well above minimum protein and calorie targets, and this trial shows that adding a bedside milk analyzer to fine-tune dosing further did not move the needle on growth, body composition, or brain measurements. If I had a baby in the NICU, I would not push for specialized milk analysis. I would put my energy into keeping my own milk supply strong through frequent pumping and skin-to-skin contact, and into working with the NICU dietitian on the fortification protocol already in place. Mother's own milk carries immune and hormonal components no fortifier replicates, and that is worth protecting even when a bedside test says nothing more is needed.

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302 Adults, 20 Recall Days, 3 Dietary Patterns Explaining 25% Of Variance

302 Adults, 20 Recall Days, 3 Dietary Patterns Explaining 25% Of Variance302 adults tracked over 20 non-consecutive recall days across about 3 months. 25% of variance302 adults tracked over 20 non-consecutive recall daysacross about 3 months25% of variance
European Journal of Clinical Nutrition, 2026
Emergingstudy decodedNew

Two Days Of Food Recalls Capture Main Dietary Patterns In 302 Adults

If 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.

  • 302 Adults Studied
  • 20 Diet Recalls
  • 3 Eating Patterns
Dr. Axe's Take

This tells me two days of honest food tracking can reveal your dominant eating pattern — whether you lean Western-style, with refined grains and added sugar, or closer to a Prudent, whole-foods pattern — even though it misses finer details. I would use a simple two-day food log, one weekday and one weekend day, as a gut check before overhauling anything. Do not obsess over catching every nuance; catch the big pattern first. If it skews Western, that is your starting point: swap in whole foods, bone broth, and fermented vegetables, then fine-tune from there.

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Whole Grain Dose Range Linked To Heart Marker Gains: 30-40g To 60-100g A Day

Whole Grain Dose Range Linked To Heart Marker Gains: 30-40g To 60-100g A Day87 trials, 6,529 adults. 60–100 g a day87 trials, 6,529 adults60–100 g a day
European Heart Journal, 2026, Naghshi et al.
Emergingstudy decodedNew

Whole Grain Intake Of 60 To 100 Grams Daily Tied To Heart Marker Gains

A massive review of 87 trials pinpoints how much whole grain actually moves cholesterol, blood pressure and blood sugar.

  • 87 Trials, 6,529 Adults
  • 60-100g Whole Grains/Day
  • 9 Heart Markers Tracked
Dr. Axe's Take

Whole grains here work through several small improvements stacking together, not one dramatic effect on a single marker. Four to six servings a day, roughly a bowl of oatmeal, a whole grain bread sandwich and a serving of brown rice, nudges cholesterol, blood pressure, blood sugar, waist size and inflammation in the same direction at once. I'd rather see five modest wins than one big one, since that mirrors how metabolic disease actually builds. This week, swap white rice and refined flour for steel-cut oats, quinoa, brown rice and sprouted whole grain bread, and check labels: 'made with whole grains' can still mean refined flour is listed first.

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Source: ScienceDaily · Sep 16, 2026Ask Dr. Axe about this →

Friday, September 18, 2026

Anti-Seizure Medications Before and After Ketogenic Diet In One Infant: 5 To 2

Anti-Seizure Medications Before and After Ketogenic Diet In One Infant: 5 To 2Case report, 1 infant, 1 year follow-up. Before diet: 5 medications; After 1 year: 2 medicationsCase report, 1 infant, 1 year follow-up
5 medications
BEFORE DIET
2 medications
AFTER 1 YEAR
-3 medications · -60%
European Journal of Clinical Nutrition, 2026, Elbarky et al.
Emergingstudy decodedNew

Ketogenic Diet Controls Seizures Within Two Weeks In Infant With Rare Metabolic Disorders

A 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.

  • Case Report
  • 3:1 Keto Diet
  • 5 Meds Failed
Dr. Axe's Take

I read this as evidence that fuel-switching diets belong in the conversation for genetic epilepsies, not only classic refractory epilepsy. Moving this infant's brain from glucose to ketones appears to have eased the glycine buildup driving her seizures, letting the medical team withdraw three of five anti-seizure drugs within a year. That outcome came from one infant inside a hospital with a full metabolic team tracking labs daily, not a home experiment. If your child has a diagnosed metabolic disorder and drug-resistant seizures, ask the neurology and genetics team whether a supervised ketogenic diet fits their specific mutation, and keep every current medication as prescribed unless that team changes the plan.

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84-Day Trial: 140 Adults Took 30+ Billion Heat-Killed beLP1 Cells Daily

84-Day Trial: 140 Adults Took 30+ Billion Heat-Killed beLP1 Cells Daily140 adults with excess weight, 70 per group, 84 days. 30+ billion cells daily140 adults with excess weight, 70 per group, 84 days30+ billion cells daily
Frontiers in Nutrition, 2026
Emergingstudy decodedNew

Heat-Killed Probiotic Eases Gut Symptoms and Stress in Adults With Excess Weight

A heat-killed postbiotic taken daily for 84 days eased digestive symptoms and perceived stress in adults carrying excess weight, without needing live bacteria to survive digestion.

  • 84-Day Trial
  • 140 Adults
  • 30+ Billion Cells Daily
Dr. Axe's Take

Adults who took a heat-killed probiotic strain reported less digestive pain and less stress over 84 days, even without weight or cholesterol changes. That pattern fits with short-chain fatty acids potentially doing double duty, calming the gut lining and reaching the nervous system, though this trial didn't test that pathway directly. The researchers didn't publish how large the improvement actually was, which limits what I take from it. I would rather build gut health from proven fermented foods like kefir, sauerkraut and kimchi, paired with fiber to feed the bacteria already making those short-chain fatty acids. If bloating and stress travel together for you, address both at once instead of treating them as separate problems.

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HILT Pain Reduction Effect Size Across Follow-Up (105 trials, n=2,710)

HILT Pain Reduction Effect Size Across Follow-Up (105 trials, n=2,710)Standardized effect size for pain reduction, higher = greater improvement; meta-analysis of 105 trials, 2,710 patients. End of treatment: Pain effect size 0.98 SMD; Under 3 months: Pain effect size 1.18 SMD; 3+ months: Pain effect size 1.01 SMDStandardized effect size for pain reduction, higher =greater improvement; meta-analysis of 105 trials, 2,710patients0.981.181.01Pain effect size (SMD)End oftreatmentUnder 3 months3+ months
Frontiers in Integrative Neuroscience, 2026
Emergingstudy decodedNew

High-Intensity Laser Therapy Cuts Pain Across 105 Clinical Trials

A meta-analysis pooling more than 5,600 patients finds that high-power laser therapy, not the weaker version used for surface wounds, delivers durable relief for deep joint and muscle pain.

  • 105 trials pooled
  • 2,710 patients treated
  • No serious side effects
Dr. Axe's Take

I think this review confirms something worth taking seriously: power output determines whether a laser actually helps a deep joint or just warms the skin. Low-level lasers rarely reach a stiff knee or an aching disc; Class IV lasers, running roughly 100 times stronger, do. If you have chronic knee, shoulder or spine pain that has not responded to physical therapy or anti-inflammatory eating, I would ask a provider whether they use a true Class IV high-intensity laser, not a handheld low-level device, and commit to a full series of sessions rather than one visit. Pair it with movement, anti-inflammatory foods, and red light therapy at home to support the same cellular energy pathways.

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Rest Interval Compared: 30 vs 180 Seconds

Rest Interval Compared: 30 vs 180 Seconds15 trained men, crossover trial. 30 vs 180 seconds15 trained men, crossover trial30 vs 180 seconds
European Journal of Clinical Nutrition, 2026.
Emergingstudy decodedNew

Rest Interval Length During Resistance Exercise Does Not Lower Post-Meal Triglycerides In Trained Men

A crossover trial testing 30-second versus 180-second rest between sets found no measurable edge for either timing when it came to blood fat levels after eating.

  • 15 Trained Men
  • 30 vs 180-Sec Rest
  • No TG Difference
Dr. Axe's Take

This tells me rest interval length isn't the dial to turn if post-meal triglycerides concern you. The workout still counts and the meal still counts, but shaving rest between sets to 30 seconds or stretching it to three minutes doesn't change how the blood handles fat afterward in men who already train. I'd rather see someone keep resistance training in their weekly routine regardless of rest timing, take a walk after their highest-fat meal of the day, and lean on foods like wild-caught salmon and ground flaxseed instead of processed fats. Skip chasing rest-interval tricks for this particular goal.

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Highest Phytochemical Intake Tertile: 52% Lower Colorectal Cancer Odds (OR 0.48)

Highest Phytochemical Intake Tertile: 52% Lower Colorectal Cancer Odds (OR 0.48)490 CRC patients vs 490 cancer-free controls; odds ratio 0.48 vs 1 by phytochemical intake tertile. Highest PI tertile: 0.48 odds ratio; Lowest PI tertile (reference): 1 odds ratio490 CRC patients vs 490 cancer-free controls; odds ratio0.48 vs 1 by phytochemical intake tertile
0.48 odds ratio
HIGHEST PI TERTILE
1 odds ratio
LOWEST PI TERTILE (REFERENCE)
Frontiers in Nutrition, 2026
Emergingstudy decodedNew

Higher Diet Phytochemical Index Linked to Lower Colorectal Cancer Odds in New Case-Control Study

New research ties higher intake of colorful, plant-compound-rich foods to 52% lower colorectal cancer odds, giving another reason to build meals around vegetables and fruit.

  • Colorectal Cancer Risk
  • Phytochemical Index
  • 490 vs 490 Case-Control
Dr. Axe's Take

A 52% difference in colorectal cancer odds between the highest and lowest thirds of plant-compound intake is a large signal, even though this case-control design can't prove diet came before the cancer. The authors treat their inflammation and oxidative-stress findings as hypothesis-generating, not proof, since blood was drawn after diagnosis rather than before. I still take it seriously: cruciferous vegetables like broccoli and cauliflower, berries and legumes carry the polyphenols and glucosinolates most often tied to these markers in other research. My move this week is to build lunch and dinner around a large serving of colorful vegetables and legumes instead of treating them as a side dish.

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Saturday, September 12, 2026

Levothyroxine Dose Needed: 38.59 vs 106.88 mcg/day (64% Lower)

Levothyroxine Dose Needed: 38.59 vs 106.88 mcg/day (64% Lower)43 adults with Hashimoto's hypothyroidism, 9 months after stopping medication. Laser therapy group: 38.59 mcg/day; Placebo group: 106.88 mcg/day43 adults with Hashimoto's hypothyroidism, 9 months afterstopping medication
38.59 mcg/day
LASER THERAPY GROUP
106.88 mcg/day
PLACEBO GROUP
Lasers in Medical Science, 2012
Emergingstudy decodedNew

Red Light Therapy Cuts Thyroid Medication Needed in Hashimoto's Patients

A small placebo-controlled trial found that laser light treatment let Hashimoto's patients need far less thyroid hormone medication nine months later, a result worth understanding correctly before drawing conclusions.

  • Red Light Therapy
  • Hashimoto's Disease
  • 43-Patient Trial
Dr. Axe's Take

This is one of the more compelling human trials I have seen on red light therapy and the thyroid gland. A dose difference this large after nine months tells me the gland itself was working better, not just being masked by a pill. I would not read this as permission to stop thyroid medication on your own — researchers withdrew it under close monitoring, which is very different from doing it at home. What I would try is red or near-infrared light therapy over the neck a few times a week as a supportive add-on, while working with a doctor who tracks TSH, free T4, and thyroid antibodies before any medication change.

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Inflammatory Markers Dropped: 19 vs 0 Over 10 Weeks

Inflammatory Markers Dropped: 19 vs 0 Over 10 Weeks36 adults, 18 in each group. Fermented food diet: 19 markers decreased; High-fiber diet: 0 markers decreased36 adults, 18 in each group
19 markers decreased
FERMENTED FOOD DIET
0 markers decreased
HIGH-FIBER DIET
Cell, 2021, Wastyk et al.
Confirmedstudy decodedNew

Fermented Foods Diet Drops 19 Inflammatory Markers In 10-Week Trial

A Stanford-led trial found daily fermented foods lowered 19 circulating inflammatory markers over 10 weeks, while a matched high-fiber diet moved none of those same markers.

  • 36 adults, 10-week trial
  • 19 markers dropped
  • Fiber diet: 0 change
Dr. Axe's Take

What stands out to me is that the fermented-food group changed almost nothing else and still saw 19 inflammatory markers drop over 10 weeks, while the high-fiber group, despite raising intake to 45 grams a day, saw none of those same markers move. I would not read this as fiber failing, six weeks of higher intake may simply be too short for fiber to reshape microbial diversity. This week, I would add one fermented food daily, plain yogurt, kefir or sauerkraut, while keeping fiber intake steady rather than choosing one over the other.

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Source: CellStudy from 2021Ask Dr. Axe about this →

Thursday, September 10, 2026

Variance in inflammation explained: gut microbiota vs. age

Variance in inflammation explained: gut microbiota vs. age1,199 adults, 30 cytokines measured. Cytokines linked to microbiota: 97 %; Cytokines linked to age: 40 %1,199 adults, 30 cytokines measured
97%
CYTOKINES LINKED TO MICROBIOTA
40%
CYTOKINES LINKED TO AGE
Nature Communications, 2026, Eriksen et al.
Emergingstudy decodedNew

Gut Microbiota Pattern Beats Chronological Age At Predicting Inflammation In 1,199 Adults

A Danish population study finds the mix of bacteria in your gut tracks with inflammation and future disease risk more closely than how many birthdays you have had.

  • 1,199 adults studied
  • 97% of cytokines
  • Inflamed up to 37 yrs earlier
Dr. Axe's Take

What stands out to me is that a pattern of gut bacteria showed an aged, inflamed blood profile in people in their twenties and thirties, decades before that same profile shows up naturally with age. I would not treat a hazard ratio of 1.21 as a diagnosis; it is a population signal, not a personal sentence. What I would do this week is feed the bacteria linked to the healthier, high-diversity pattern: 30 or more different plant foods a week, a serving of fermented food like kefir, sauerkraut or kimchi most days, and a source of prebiotic fiber such as onions, garlic, asparagus or green bananas daily.

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