Hello friends, this is Dr. Stela Heisler. For over 10 years now I’ve been meeting patients at my clinic in Jerusalem, and among all the treatments, stories, and experiences – there’s one topic that comes up again and again, but isn’t always discussed openly: bad breath. It’s a phenomenon that can be very embarrassing. People tell me they avoid smiling, fear getting close to others, feel uncomfortable at meetings, at work, in relationships – all because of a feeling of lack of control over their breath. Sometimes this happens even when maintaining good hygiene, brushing teeth, using mouthwash – and still, the odor doesn’t disappear.
The good news? In most cases it can be solved – and relatively easily. But first of all, you need to understand what causes this odor, and how it can be treated precisely.
In this article I invite you to learn about the common causes of bad breath (professionally called “halitosis“), and also the truly effective ways to treat it. This is an important topic to discuss without embarrassment – because it’s about health, self-confidence, and our quality of life.
Causes of Bad Breath
1. Poor Oral Hygiene
Most people hear “brush your teeth twice a day” and feel that’s enough – but it’s not always true. When the oral cavity isn’t cleaned properly, bacteria accumulate between the teeth, below the gum line, and on the tongue. These bacteria break down food residues and produce bad odor. Beyond thorough tooth brushing (at least 2 minutes, twice a day), it’s important to also incorporate daily use of dental floss and tongue cleaning. Many of the bacteria that cause odor don’t sit on the teeth – but rather on the back of the tongue, and without dedicated cleaning, they simply stay there and continue to emit an unpleasant odor.
2. Gum Diseases (Gingivitis and Periodontitis)
If you have bad breath that refuses to go away – it’s possible the problem is gum inflammation. When bacteria accumulate over time along the gum line and aren’t removed, they create an inflammatory response that causes bleeding, sensitivity, and sometimes gum recession. At a more advanced stage, periodontitis develops – deep inflammation of the tissues supporting the tooth, with pockets in the gums where bacteria, pus, and root decay accumulate. All of these can create a strong, stubborn, and unpleasant odor – that doesn’t go away with rinsing or brushing alone. Treatment in such a case usually requires professional intervention: deep cleaning with a hygienist, local antibiotic treatment, and sometimes also advanced gum treatments.
3. Dry Mouth (Xerostomia)
Many aren’t aware of this, but saliva plays a central role in maintaining normal breath odor. It washes away bacteria, neutralizes acids, and helps break down food. When saliva production decreases – whether due to medications (such as antihistamines, antidepressants, or blood pressure medications), smoking, age, mouth breathing, or diseases like Sjögren’s syndrome – a dry environment develops that allows bacteria to multiply quickly. Without natural saliva cleaning, the mouth becomes a “breeding ground” for bad breath. If you feel dry mouth frequently, it’s worth checking it out – sometimes the solution is as simple as switching to another medication, increasing fluid intake, or using mouth moisturizing products.
4. Coated Tongue
One of the most “neglected” places in oral hygiene is the tongue. It’s covered with thousands of papillae – small bumps or protrusions, between which bacteria, food residues, and dead cells can get stuck. This appears as a whitish-yellowish layer on the back of the tongue – and it’s one of the main causes of persistent bad breath. I highly recommend using a tongue scraper every morning – a simple action that takes less than a minute, but can significantly improve your breath.
5. Diet and the Effect of Certain Foods
There are foods that simply leave an odor: garlic, onions, coffee, alcohol, smoked fish – all of these can be absorbed into the bloodstream and reach the lungs, where they’re expelled again through breathing. It’s important to understand: even if you brush your teeth – the odor won’t necessarily disappear, because its source isn’t in the mouth but in the digestive and respiratory systems. The solution here is nutritional awareness. You don’t always have to stop consuming those same foods, but you can time them correctly (for example, not before an important meeting) or combine “neutralizing” foods like parsley, apples, or water with lemon.
6. Smoking
Beyond the fact that smoking stains teeth and harms the general odor, it also damages blood flow to the gums, causes tartar to form much faster, dries the mouth, and reduces saliva amount. All of these together – are a sure recipe for bad breath. Additionally, smoking “wraps” the mouth in a strong odor layer that remains for a long time, even after the cigarette is extinguished. If you’re a smoker and suffer from bad breath – it’s likely the two are connected. Here too, a cessation process, even partial, can do wonders for your breath – and improve your overall health and additionally – your financial situation!
7. General Medical Problems
Sometimes the source of bad breath isn’t in the mouth at all. Medical conditions such as:
- Gastroesophageal reflux (GERD) – acid rise that causes acidic or bitter odor.
- Uncontrolled diabetes – can cause sweet or acetone-like odor.
- Liver or kidney disorders – bring with them a metallic odor from the mouth.
- Upper respiratory tract infections – sinusitis, tonsillitis, cryptic tonsils.
In such cases, a professional dentist will know to identify that the source isn’t dental – and refer you to appropriate medical investigation. Early detection can save lives.
How to Treat Bad Breath?
The first and most important step is accurate diagnosis. I invite you to schedule an appointment for a professional examination at my clinic in Jerusalem – to check the condition of the gums, tongue, saliva, and identify the source of the odor. In most cases, proper treatment, an adapted hygiene routine, and sometimes also referral to additional factors – solve the problem effectively.
My message to you is simple: there’s no need to be embarrassed. Bad breath is a common phenomenon – and it has a solution. Let’s solve the problem together!
