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Insight into Parsley Health’s care model: how our clinicians think, evaluate root causes, and deliver personalized, evidence-based medicine.

Care & Clinical Expertise

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Expert guides to health conditions from Parsley Health.

Condition Guide

Clear, science-backed explanations of common health questions, from symptoms and diagnoses, to how functional medicine approaches root-cause care.

Guides & Explainers

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Understand what your lab results really mean. We break down biomarkers, blood tests, and emerging diagnostics, and how clinicians use them to guide care.

Labs & Biomarkers

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Browse all the latest articles and videos from Parsley Health, sorted by newest first.

Latest Articles

Daily habits matter. Explore how movement, sleep, stress, and recovery influence your health, and how to support your body sustainably.

Lifestyle & Movement

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Real stories from Parsley Health members, along with major company updates and announcements that reflect how our care works in real life.

Member Stories & Updates

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Practical, clinician-informed nutrition guidance — including diets, food strategies, and eating patterns that support whole-body health.

Nutrition & Diet

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A clear, clinical look at supplements and therapeutic tools — what works, what doesn’t, and how they’re used safely as part of personalized care.

Supplements & Therapies

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PMOS affects 1 in 5 women and is the leading cause of infertility in the US. Dr. Robin Berzin shares three natural ways to manage symptoms—starting with blood sugar, supplements, and exercise.

3 Things You Can Do to Manage Your PMOS

Functional Medicine vs Longevity Medicine: What’s the Difference?

Rheumatoid Arthritis (RA): Symptoms, Causes, and a Root-Cause Approach to Autoimmune Joint Health

Explore the best holistic doctor platforms for personalized, whole-body care, including Parsley Health’s root-cause approach and insurance-covered care.

Best Holistic Doctors: Top Platforms for Personalized, Whole-Body Care

The signs of autoimmune disease may depend on the organ that is affected. Some of the common signs may include redness, swelling, and diarrhea. 

5 Early Warning Signs of Autoimmune Disease

Learn how Parsley Health's functional medicine clinicians are different than other holistic medicine doctors and clinics out there.

How Is Parsley Health Different From Other Functional Medicine Doctors and Clinics?

Learn what to know before taking progesterone without estrogen, including potential benefits, risks, and how it may affect hormone balance and overall health.

What to Know Before Taking Progesterone Without Estrogen

Gut dysbiosis symptoms include bloating, fatigue, and chronic digestive upset. Learn what causes gut microbiome imbalance and how functional medicine treats it at the root.

Gut Dysbiosis: Symptoms, Causes, and How to Treat It

What is LDL cholesterol and why does it matter? Learn what high LDL means, common causes, and how lifestyle changes may support healthier cholesterol levels.

LDL Cholesterol: What It Is & How to Manage It

Psoriasis on the feet can cause itching, scaling, and discomfort. Learn common symptoms, triggers, and treatment options that may help manage foot psoriasis.

Psoriasis on Feet: Symptoms, Causes & Treatment

Looking for natural ways to manage anxiety? Learn science-backed strategies, lifestyle changes, and holistic approaches that may help support calmer mental health.

10 Ways to Manage Anxiety Naturally (Without Medication)

Psoriasis vs eczema: what’s the difference? Learn how symptoms, causes, and triggers compare, plus how to recognize each condition and support skin health.

Psoriasis vs Eczema: What’s the Difference?

What is fibermaxxing? Learn what this high-fiber trend means, potential health benefits, possible risks, and how to increase fiber intake in a balanced way.

What Is Fibermaxxing? Is It Good for You & Should You Do It?

What is lipedema? Learn the symptoms, causes, and how lipedema differs from obesity or lymphedema, plus how it’s diagnosed and managed.

What Is Lipedema? How to Tell If You Have Lipedema

What is estriol cream? Learn how this estrogen therapy works, potential benefits, safety considerations, and who may consider estriol during menopause.

Everything You Need to Know About Estriol Cream

Hormonal belly fat is common, especially with stress, aging, or hormone shifts. Learn what causes hormone belly and how to reduce it safely.

Hormonal Belly: Common Causes and 4 Ways To Get Rid of Hormonal Belly Naturally

Looking to heal your thyroid naturally? Learn evidence-based ways to support thyroid health through diet, stress management, sleep, and lifestyle habits.

How To Health Your Thyroid Naturally: 8 Thyroid Healing Practices You Can Start Today

Why does my body feel heavy, tired, or weak? Learn the most common causes, from thyroid issues to nutrient deficiencies, and what you can do about it.

Why Does My Body Feel Heavy and Tired? Causes & What Helps

Better sleep supports weight loss by regulating hormones, stress, and metabolism. Here’s what the research actually says.

Does Better Sleep Help With Weight Loss? What the Research Actually Says

Functional nutrition coaches are trained in nutrition, stress reduction, positive lifestyle change and more. Research shows they can improve health outcomes. Here's how they can help you.

Why A Nutrition Coach Is Key to Lasting Wellbeing

Mold toxicity can cause brain fog, fatigue, congestion, and more. Learn the real signs of mold exposure, how to identify mold poisoning symptoms, and what to do next.

12 Mold Toxicity Symptoms & Mold Exposure Signs You Shouldn’t Ignore

A “cortisol detox” isn’t about flushing hormones, it’s about supporting a healthy cortisol rhythm. Learn what it is, what to eat, and evidence-based ways to lower cortisol.

Cortisol Detox: Effective Ways To Naturally Lower Your Cortisol Stress Hormones

Waking up in the middle of the night? Learn common reasons you keep waking up at night and what your sleep interruptions may be telling you.

Why Do I Keep Waking Up In The Middle of The Night? 15 Reasons For Insomnia & Poor Sleep

Learn how to increase progesterone naturally and medically. Understand causes of low progesterone, symptoms, and evidence-based ways to support hormone balance.

How to Increase Progesterone Naturally & Medically: Causes, Symptoms, and Options

Most annual labs miss the markers that explain fatigue, weight changes, mood swings, and more. Discover the 6 lab categories that reveal the root causes of your health.

The Six Lab Categories That Reveal What Your Routine Bloodwork Misses

Looking for natural ways to get rid of eczema? Learn what causes eczema, which treatments may help, and how a root-cause approach can support relief.

How to Get Rid of Eczema Naturally: 6 Natural Treatment Options

Know the early signs of lupus in females: fatigue, joint pain, butterfly rash, brain fog, and more. Learn which symptoms to watch for and when to see a doctor.

12 Early Signs of Lupus in Females: Symptoms Women Should Know

Curious about a heavy metal detox? Learn what heavy metals are, common exposure sources, detox options, testing, and potential risks to know.

Heavy Metal Detox: Symptoms, Side Effects, & Detox Treatments for Heavy Metal Exposure

Looking for menopause treatment options? Learn about evidence-based menopause treatments and natural strategies for symptom relief and hormone balance.

Menopause Treatment Options: Natural Ways to Find Symptom Relief

Curious about a liver cleanse detox? Learn what actually supports liver detox, which myths to avoid, and how to cleanse your liver safely and naturally.

Liver Cleanse Detox: How To Cleanse Your Liver Naturally

Can GERD be cured permanently? Learn what causes chronic acid reflux, which treatments help, and how lifestyle and root-cause care can support lasting relief.

How to Cure GERD Permanently: Treatment Options For GERD & Acid Reflux

The MTHFR gene mutation is common and can affect how the body processes folate. Learn MTHFR mutation symptoms, testing, and treatment options.

MTHFR Gene Mutation: Symptoms, Testing, and 6 Natural Treatments Options

Macrocytic anemia causes enlarged red blood cells. Learn symptoms, causes, and how megaloblastic anemia differs, and what it may mean for women.

Macrocytic Anemia vs Megaloblastic Anemia: Differences, Symptoms, and What Is It

If your stomach is constantly tight and swollen, there may be a bigger issue at play. Here are several reasons why you may feel bloated 24/7 and how to fix it.

6 Reasons You Feel Bloated All the Time—and What to Do About It

Experiencing burnout? Here are tips on how to recover, according to the functional medicine experts at Parsley Health.

How To Recover from Burnout: 6 Ways To Fight Stress

By taking a root-cause approach to addressing long COVID symptoms, the doctors at Parsley Health have developed a protocol that helps people recover from the lingering virus. Learn more about Parsley's effective long COVID treatment. 

Why Parsley Health's Root-Cause Approach to Long COVID Treatment Works

What is Parsley Health’s Medicine?

Menopause fatigue is driven by shifting estrogen, poor sleep, and hot flashes that disrupt rest. Learn why it happens and what may help you get your energy back.

Menopause Fatigue: Why It Happens and What Helps

An early period is often caused by stress, hormonal shifts, perimenopause, or changes in birth control. Learn the common causes and when to see a clinician.

Why Is My Period Early? Causes and When to Pay Attention

Cortisol belly is stubborn abdominal fat linked to chronic stress and elevated cortisol. Learn how sleep, nutrition, and stress reduction may help reduce it.

How to Get Rid of Cortisol Belly

PFAS and BPA are linked to hormone disruption, immune changes, and some cancers. Learn what the research actually shows, where evidence is strong, and how to reduce exposure.

Forever Chemicals (PFAS) and BPA: What the Science Says About Health and Cancer Risk

Thyroid peroxidase (TPO) antibodies signal an autoimmune response against the thyroid. See the range chart, learn what elevated TPO Ab levels mean, and next steps.

Thyroid Peroxidase Antibody (TPO Ab) Range Chart: What Your Levels Mean

Can functional medicine help with fibromyalgia? Learn how root-cause testing, sleep, and nutrition may ease symptoms when standard care isn't enough alone.

Can Functional Medicine Help With Fibromyalgia?

Can functional medicine help with ADHD? See what the evidence says about nutrition, sleep, and root-cause testing, and how it fits alongside standard care.

Can Functional Medicine Help With ADHD?

Can functional medicine help with SIBO? Learn how breath testing, targeted nutrition, and root-cause care address bacterial overgrowth and prevent relapse.

Can Functional Medicine Help With SIBO?

Can functional medicine help with Crohn's disease? See how root-cause care may support remission alongside your GI specialist, from nutrition to gut testing.

Can Functional Medicine Help With Crohn’s Disease?

Do GLP-1 patches work for weight loss? Learn what the science says about their ingredients, effectiveness, safety, and how they compare with GLP-1 medications.

Do GLP-1 Patches Work? What the Science Actually Says

Learn how chronic stress may accelerate aging, affect your hormones and overall health, and what you can do to reduce or potentially reverse its effects.

Does Stress Age You? What Chronic Stress Does to Your Body and Whether It Can Be Reversed

Learn the early signs of perimenopause, common symptoms, when it can begin, and what to expect as your hormones and menstrual cycle change.

How Do I Know If I’m Starting Perimenopause? Early Signs, Symptoms, and What to Expect

Learn how to lose weight during menopause, why weight gain happens, and practical ways to support your hormones, metabolism, and overall health.

How To Lose Weight During Menopause: Understanding the Reality of Menopause Weight Gain

Can Functional Medicine Help With Anxiety?

Is a Hair Mineral Analysis Test Worth It? What It Can Actually Reveal About Your Health

What Is Estrogen Dominance? Common Causes, Symptoms, and How to Support Hormonal Balance

Functional Medicine vs Holistic Medicine: What’s the Difference?

Can Functional Medicine Help With Weight Loss?

Learn common causes of a heavy, bloated stomach, simple ways to find relief, and when ongoing bloating may need medical evaluation.

Why Does My Stomach Feel Heavy and Bloated? Causes, Relief, and When to Get Checked

Learn when functional medicine may be covered by insurance, what services may qualify, and how Parsley Health helps make care more accessible.

Is Functional Medicine Covered by Insurance? What to Know Before You Start Care

What is psoriasis? Learn common symptoms, causes, types, and treatment options for this chronic inflammatory skin condition and how it’s managed.

Psoriasis: What It Is, Symptoms, Causes, Types & Treatment

Hormone replacement therapy (HRT) may help manage menopause symptoms. Learn potential benefits, risks, and what to consider when exploring HRT.

Hormone Replacement Therapy (HRT) for Menopause

What is leaky gut syndrome? Learn common symptoms, causes, testing options, and ways to support gut health and intestinal barrier function.

Leaky Gut Syndrome: Symptoms, Diet, Tests & Treatment

Sudden crashing fatigue in women can feel overwhelming. Learn common causes of low energy in women, what may trigger crashes, and when to seek care.

Sudden Crashing Fatigue In Women: Hormone Causes of Low Energy

What’s the strongest candida killer? Experts explain natural candida killers, antifungal options, and why a multi-step approach works best.

What’s The Strongest Candida Killer? Experts Weigh In On Natural Candida Killers

Candida overgrowth can cause persistent symptoms. Learn evidence-based, natural ways to rebalance Candida, support gut health, and reduce recurrence.

How to Cure Candida Naturally & Get Rid of Candidiasis Permanently

Learn how functional nutrition coaches support behavior change, personalize care, and help translate medical insights into sustainable daily habits.

What Does a Functional Nutrition Coach Do?

High or low chloride on a blood test can reflect dehydration, kidney function, or acid-base imbalance. Learn what abnormal chloride levels mean and next steps.

Chloride Blood Test High or Low: What It Means

High monocytes on a blood test often point to infection, chronic inflammation, or immune activity. Learn the common causes of elevated levels and what to do next.

High Monocytes: Causes and What To Do Next

A low anion gap on a blood test is uncommon and often linked to low albumin, lab error, or certain conditions. Learn what your result means and next steps.

Low Anion Gap: What It Means on Your Blood Test

High lymphocytes on a blood test may signal infection, stress, or immune activity. Learn what elevated counts mean, common causes, and when to see a clinician.

High Lymphocytes: What Your Results Mean

Low or high alkaline phosphatase on a blood test can point to liver, bone, or nutrient issues. Learn what abnormal ALP levels mean and what to do next.

Low vs High Alkaline Phosphatase: Causes and How to Address

Low iron saturation often signals iron deficiency, blood loss, or poor absorption. Learn the causes, symptoms like fatigue and hair loss, and which tests to ask for.

Low Iron Saturation: Causes, Symptoms, and Testing

High MPV on a blood test means your platelets are larger than average, often due to increased production. Learn the common causes and what to do next.

High MPV Blood Test: What Elevated Platelet Volume Means

Low bilirubin on a blood test is rarely a concern and may even be linked to a lower risk of certain conditions. Learn what it means and when to follow up.

Low Bilirubin: What It Means and Whether It Matters

High ALT levels on a blood test often point to liver stress from fatty liver, alcohol, medications, or infection. Learn the causes and what to do next.

High ALT Levels: What Your Liver Is Telling You

Total iron binding capacity (TIBC) measures how well your blood carries iron. Learn what high or low TIBC means, common causes, and which tests to ask for.

Total Iron Binding Capacity (TIBC): Understanding Your Results

Normal estradiol levels change with age and menstrual cycle phase. See the reference chart, learn what high or low estradiol may mean, and when to test.

Normal Estradiol Levels by Age: Chart and What They Mean

High RDW Blood Test: What It Means and When to Worry

A hematocrit (HCT) test measures the share of your blood made up of red blood cells. Learn normal ranges, what high or low hematocrit means, and next steps.

Hematocrit (HCT) Test: What It Is, Normal Levels, and High and Low Ranges

CO2 on a blood test measures bicarbonate, which reflects your body's acid-base balance. Learn what high or low CO2 levels mean, common causes, and next steps.

CO2 Markers in a Blood Test: What High or Low Levels Mean

Can functional medicine help with PCOS? Learn how a root-cause approach addresses insulin resistance, hormones, and inflammation alongside standard care.

Can Functional Medicine Help With PCOS/PMOS?

Neutrophils are the immune system's first responders against infection. Learn what high or low neutrophil counts mean, common causes, and when to follow up.

Reading Your Neutrophil Count: The Immune System’s First Responders

Do cortisol blockers actually work? Learn what the research shows about supplements and medications that claim to lower cortisol, and what helps instead.

Cortisol Blockers: What Works and What Doesn’t

Discover the advanced lab tests functional medicine doctors order, from hormone panels to gut testing, and what these markers reveal that standard labs miss.

What Advanced Lab Tests Does a Functional Medicine Doctor Order?

Learn what optimal testosterone levels for men look like, how ranges are defined, symptoms of imbalance, and when a personalized approach may help.

Optimal Testosterone for Men: Evidence-Based Ranges, Symptoms, and How to Support Healthy Levels

How To Read Your Bloodwork Like a Longevity Doctor

Learn the common causes and symptoms of vitamin B12 deficiency, how it’s diagnosed, and treatment options to discuss with a clinician.

Vitamin B12 Deficiency: Causes, Symptoms, and Treatment

Learn what low ferritin levels can mean, common causes of low iron stores, symptoms to watch for, and when to talk with a clinician.

Why Are My Ferritin Levels Low? Low Ferritin Causes

Explore DHT blockers for women’s hair loss, including options, safety, and side effects, and how hormonal balance may impact hair thinning and regrowth.

DHT Blockers for Women’s Hair Loss: Options, Safety, and Side Effects

Does adding salt to water help hydration? Learn the science, potential benefits, and risks, and when electrolyte support may be helpful for optimal fluid balance.

Does Adding Salt to Water for Hydration Actually Work?

Explore the different types of magnesium, their benefits, and how to choose the right form to support sleep, stress, digestion, and overall health.

Different Types of Magnesium and Their Benefits: Which Magnesium Is Best?

Electrolyte imbalance can affect hydration, nerves, and muscles. Learn common symptoms, causes, and ways to restore healthy electrolyte balance.

Electrolyte Imbalance: Symptoms, Causes, and How to Fix It

Compare the best functional health lab platforms, including Parsley’s Functions, Superpower, Mito, and InsideTracker. Learn how clinician-led testing differs.

Top 5 Best Functional Health Labs Platforms: Parsley vs Function vs Superpower vs Mito vs InsideTracker

Learn the most common types of blood tests, what results can show about your health, how testing works, and when follow-up may be helpful.

Blood Tests: Types, Results & How They Work

Learn what hormonal imbalance really means, common symptoms and causes, and evidence-based ways to support hormone balance over time.

Latest Articles

Menopause Fatigue: Why It Happens and What Helps

Chloride Blood Test High or Low: What It Means

High Monocytes: Causes and What To Do Next

Low Anion Gap: What It Means on Your Blood Test

High Lymphocytes: What Your Results Mean

Low vs High Alkaline Phosphatase: Causes and How to Address

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