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Thyroid nutrition, evidence-based.

Short, cited, no alarmism. Every article is graded by evidence level.

MythsStrong

'Adrenal Fatigue' and Thyroid Disease: Separating Myth from Real Medicine

'Adrenal fatigue' is not a recognized medical diagnosis. Learn why it's a myth, what the real diagnoses are, and how it overlaps with undertreated hypothyroidism.

4 min read
MedicationStrong

Biotin and Thyroid Labs: Why Your Supplement May Be Skewing Your Results

High-dose biotin supplements cause falsely low TSH and falsely high T3/T4 on standard lab tests. The FDA warned about this in 2017. Here's what to do.

4 min read
MedicationStrong

Calcium, Iron, and Levothyroxine: The 4-Hour Rule

Calcium and iron levothyroxine interactions can cut absorption by 25-30% and push TSH from 1.6 to 5.4. Why the 4-hour rule matters and how to apply it.

5 min read
MythsStrong

Coconut Oil and the Thyroid: What the Evidence Actually Shows

Does coconut oil help the thyroid? No high-quality clinical trial supports it. What the research shows about MCTs, metabolism, and LDL cholesterol risk.

5 min read
MedicationStrong

Coffee and Levothyroxine Timing: The 60-Minute Window

Coffee levothyroxine timing matters more than most patients are told. Benvenga 2008 found about 36% less T4 absorption when taken together. Wait 60 min.

5 min read
NutrientsEmerging

Curcumin and Hashimoto's: What the Research Actually Shows

Curcumin may reduce TPO antibodies and inflammation in Hashimoto's, but poor absorption is the catch. Here's what the RCTs actually found.

4 min read
DietEmerging

Dairy and Hashimoto's: When It Matters and When It Doesn't

Dairy and Hashimoto's: lactose intolerance can interfere with levothyroxine, but no trial shows dairy elimination lowers thyroid antibodies. What to do.

6 min read
MedicationModerate

Fiber Supplements and Levothyroxine: The 4-Hour Rule That Protects Your Dose

Dietary fiber and fiber supplements like psyllium can bind levothyroxine in the gut and reduce absorption. Learn the simple timing rule that prevents this.

4 min read
MythsModerate

Fluoride and the Thyroid: What the Evidence Actually Says

Does fluoride harm your thyroid? An honest look at fluoridated water, hypothyroidism, iodine sufficiency, and what the dose-response evidence really says.

6 min read
MedicationStrong

Generic vs Brand Levothyroxine: Does It Matter?

Generic vs brand levothyroxine: neither is inherently better. The FDA calls it a narrow-therapeutic-index drug, so consistency and TSH retesting matter most.

5 min read
DietModerate

Gluten-Free and Hashimoto's: What the Evidence Actually Says

Gluten free and Hashimoto's: essential if you also have celiac disease, optional and mixed-evidence for everyone else. What the research actually shows.

6 min read
DietEmerging

Intermittent Fasting and Thyroid Health: What the Evidence Actually Says

Intermittent fasting temporarily lowers T3 in healthy people. For hypothyroid patients on levothyroxine, timing matters. Here's what research shows.

4 min read
NutrientsStrong

Iodine and Hypothyroidism: Why More Is Not Better for Hashimoto's

Iodine and hypothyroidism have a U-shaped relationship: too little causes deficiency, too much can worsen Hashimoto's. What WHO, NIH, and the ATA actually say.

6 min read
NutrientsModerate

Iron Deficiency and Thyroid: Why Low Ferritin Mimics Hypothyroid Symptoms

Iron deficiency and thyroid symptoms overlap: TPO needs iron to build hormone, and low ferritin can leave you exhausted even when your TSH looks fine.

5 min read
MythsStrong

Is Broccoli Bad for Hypothyroidism? The Goitrogen Myth, Examined

Is broccoli bad for hypothyroidism? In normal cooked portions with adequate iodine, no. Here is what the human evidence on goitrogens really shows today.

5 min read
MythsStrong

Is Soy Safe for Hashimoto's? What the Research Actually Shows

Is soy safe with Hashimoto's? Clinical trials show soy doesn't meaningfully harm thyroid function in iodine-replete adults. The real rule: timing it apart.

6 min read
MythsEmerging

Leaky Gut and Hashimoto's: Separating Emerging Science from Wellness Hype

Can 'leaky gut' worsen Hashimoto's? Here's what the emerging science on intestinal permeability and thyroid autoimmunity actually shows.

5 min read
MedicationStrong

Levothyroxine on an Empty Stomach: Why Timing Matters

Levothyroxine empty stomach: why it matters. Acidic, food-free conditions let the tablet dissolve and reach the small intestine for 70-80% absorption.

5 min read
NutrientsEmerging

Magnesium and Thyroid Function: What the Evidence Actually Shows

Does magnesium help your thyroid? The biochemistry is real, observational data hints at a link, but no monotherapy trial has proven a thyroid benefit yet.

5 min read
DietModerate

Mediterranean vs. AIP for Hashimoto's: What the Evidence Shows

Mediterranean vs. AIP for Hashimoto's: a large RCT and a 17-trial meta-analysis back Mediterranean; AIP rests on two small uncontrolled pilots. Evidence inside.

6 min read
NutrientsEmerging

Myo-Inositol and Hashimoto's: A Promising but Small Evidence Base

Small Italian RCTs show myo-inositol plus selenium may lower TPO antibodies and TSH in Hashimoto's — here's what the evidence actually says and what's missing.

5 min read
MythsLimited

Nightshades and Hashimoto's: What the Evidence Actually Shows

Should people with Hashimoto's avoid tomatoes, peppers, and eggplant? Here's what the limited evidence on nightshades and thyroid autoimmunity actually shows.

4 min read
NutrientsEmerging

Omega-3 Fatty Acids and Thyroid Health: What the Research Actually Shows

Omega-3s show anti-inflammatory promise for Hashimoto's, but the evidence is emerging — here's what studies actually found and what it means for you.

5 min read
NutrientsEmerging

Probiotics and Hashimoto's: What the Gut-Thyroid Research Shows

Research links gut dysbiosis to Hashimoto's autoimmunity. Here's what RCTs and meta-analyses actually show about probiotics and thyroid health.

4 min read
MedicationStrong

Proton Pump Inhibitors and Levothyroxine: Why Your Heartburn Drug May Be Raising Your TSH

PPIs like omeprazole and pantoprazole raise stomach pH and impair levothyroxine absorption. Learn how to manage this clinically important drug interaction.

5 min read
NutrientsModerate

Selenium and Hashimoto's: What the Research Actually Shows

Selenium and Hashimoto's: a 2010 meta-analysis showed 200 mcg/day lowered TPO antibodies in 3 months. See what the evidence shows, and where it's weaker.

4 min read
DietModerate

Sugar and Thyroid Inflammation: What Hashimoto's Patients Need to Know

High refined sugar intake drives systemic inflammation that may worsen Hashimoto's. Learn what the research actually says and practical steps to cut back.

4 min read
MedicationModerate

T3/T4 Combination Therapy: Is Adding Liothyronine Right for You?

Still feeling unwell on levothyroxine with a normal TSH? Learn what the research says about adding T3 (liothyronine) and who may actually benefit.

5 min read
MythsStrong

The Alkaline Diet and Thyroid Health: Why pH Has Nothing to Do with It

Does eating alkaline foods boost thyroid function? The evidence is clear: diet cannot meaningfully change your blood pH. Here's what the science shows.

4 min read
NutrientsModerate

Vitamin B12 and Hypothyroidism: Why Deficiency Is So Common and What to Do About It

B12 deficiency is common in Hashimoto's and hypothyroidism — often causing fatigue and brain fog that mirror thyroid symptoms. Here's why it happens and when to test.

5 min read
NutrientsModerate

Vitamin D and Hashimoto's: What the Evidence Actually Shows

Vitamin D and Hashimoto's: low levels are common and small RCTs show modest antibody drops, but causation is unsettled — test 25(OH)D before supplementing.

6 min read
NutrientsEmerging

Zinc and Thyroid Function: What the Evidence Actually Shows

Does zinc help the thyroid? It's a cofactor for T4-to-T3 conversion, but RCT evidence is small, mostly outside Hashimoto's, and limited and inconsistent.

4 min read