Keto and Fasting Bad Breath: Causes and Fixes
Bad breath from keto diet or fasting smells fruity, not sulfurous — because it comes from acetone, not bacteria. What's normal, what's not, and how to fix it.
The Breathcure Journal Topic
Bad Breath
Persistent bad breath almost always has a treatable cause — and it usually isn't what people assume. The articles in this tag explain the real biology behind chronic bad breath, why mouthwash and mints rarely solve it, and what a halitosis-focused dental exam actually looks like. Dr. Teah Nguyen has spent two decades treating breath issues at the Center for Breath Treatment in Berkeley; these posts distil that clinical experience into practical guidance you can apply at home or bring to your next dental visit.
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Articles in this topic
Oral Probiotics for Bad Breath: What the Research Shows
Specific oral probiotic strains reduce volatile sulfur compounds in clinical trials — but most commercial products miss therapeutic doses. An evidence-led guide to what works, what to ignore on the label, and where probiotics plateau.
Is Your Tongue the Source of Your Bad Breath? The Complete Guide
Roughly 80% of chronic bad breath comes from bacteria on the back of the tongue. Learn how to test it yourself, scrape it correctly, and decide when cleaning alone is not enough.
How to Know If You Have Halitosis (Self-Test Guide)
How do I know if I have halitosis? Six reliable self-tests, what each result means, and how to tell chronic bad breath from a temporary smell.
Can Post-Nasal Drip Cause Bad Breath? The Sinus Connection Explained
Yes — post-nasal drip is one of the most under-diagnosed causes of chronic bad breath. Learn the mechanism, how to tell sinus breath from dental breath, and what actually treats it.
What Causes Dry Mouth? A Guide to Xerostomia
Dry mouth is a diagnosable condition with identifiable causes — not just dehydration. Medications, mouth breathing, autoimmune disease, stress, and cancer therapy all play distinct roles. A clinical guide to the why, the consequences, and what actually restores saliva.
How to Get Rid of Halitosis Permanently
Chronic bad breath rarely responds to mouthwash and tongue scrapers alone. Learn the five root causes of halitosis — and the diagnosis-first treatment path that actually clears it for good.
Bad Breath During Pregnancy: Causes, Safe Remedies & When to See a Dentist
Why pregnancy hormones, dehydration, and morning sickness cause bad breath — and the safe, effective ways to manage halitosis during pregnancy.
Breath Treatment Starter Kit Review: DioxiRinse, DioxiBrite, Dentiva
An in-depth review of the Breath Treatment Starter Kit — how DioxiRinse, DioxiBrite, and Dentiva work together to treat chronic halitosis at the source.
How to Tell a Friend They Have Bad Breath: A Kind, Honest Guide
How to tell someone they have bad breath without hurting them. Common causes of halitosis, why honesty is the kind option, and where to get treatment.
What a Dental Hygienist Actually Does for Bad Breath Patients
How dental hygienists support halitosis treatment — from deep cleanings to tongue debridement and patient education on the bacteria behind chronic bad breath.
Halitosis in the Workplace: The Career Cost of Chronic Bad Breath
Chronic bad breath can quietly affect confidence, workplace relationships, and career advancement. Learn what causes it and how professional treatment helps.
The Emotional Impact of Halitosis: How Chronic Bad Breath Affects Your Life
Halitosis can take a serious emotional toll — affecting confidence, relationships, and mental health. Learn how chronic bad breath impacts your life and what to do about it.
Why Does My Floss Smell? Real Causes and When to Worry
A bad odor on used floss isn't always bad breath — but it can be an early sign of gum disease. Learn what causes it and how to protect your gums.
Bad Breath and Antibiotics: Why the Improvement Doesn't Last
Why bad breath often improves on antibiotics and returns afterward — what the temporary effect tells you about the real cause of chronic halitosis.