Here are the American statistics for gum:

And here are mouthwash numbers from Scotland:

The prevalence of mouthwash use declined with age. Women used mouthwash more than men, and never-smokers appeared less likely to use mouthwash (40 versus 53 percent). Daily alcohol consumers tended to use mouthwash daily more than abstainers (42 versus 37 percent).

Halitosis is common, affecting nearly one in three individuals around the globe. A research study that combined the results of 13 medical journal articles reported that halitosis affects about 32 percent of the population.

Halitosis (bad breath) causes

A primary cause of halitosis is the buildup of volatile sulfuric compounds in the mouth. Anaerobic bacteria, feeding on the food we leave behind, produce these odor-producing substances.

Potential causes of halitosis include the following:

• Poor dental hygiene. Skip the proper, regular brushing and flossing (and dental cleanings), and you leave food in your mouth. This detritus creates a breeding ground for bacteria. Moreover, the food around your tongue, teeth, and gums can rot. The result? An unpleasant odor in the mouth.
• Certain foods. Diet is associated with our oral health. In addition, our bodies absorb garlic, onions, and other consumed food. Until the food leaves the body, it can affect breath.
• Tongue bacteria. Certain bacteria interact with food’s amino acids, producing smelly sulfur compounds.
• Dry mouth (xerostomia). With decreases in saliva, the mouth cannot optimally cleanse itself. Food debris is left behind. Xerostomia can be the product of some medicines, radiation therapy that hits salivary glands, a primary salivary gland disorder, or always mouth breathing.

• Periodontal disease. A primary symptom of periodontal disease is bad breath. Please seek immediate care from an oral health professional.
• Tobacco products. Consume cigarettes, cigars, smokeless tobacco, or snuff, and you stain your teeth while putting yourself at risk of numerous diseases. In addition, tobacco products cause bad breath, periodontal disease, irritated gums, taste loss, and more.
• Certain health conditions. The problems that can cause bad breath include nose, windpipe, or lung infections. Chronic bronchitis, postnatal drip, chronic sinusitis, diabetes, a gastrointestinal disorder, or a liver or kidney disorder can cause halitosis. Please see your healthcare provider for an evaluation.

The main halitosis symptom is a foul odor from the mouth that is considered beyond socially acceptable. This odor may worsen in the morning or after drinking coffee, smoking, or eating foods such as garlic.

Diagnosing halitosis begins with a history and physical examination. A clinician checks the mouth to see if a cause (such as infection) is present. Diagnosing halitosis begins with a history and physical examination. The mouth is checked to see if a cause (such as infection) is present.

Halitosis (bad breath) conventional treatment

The Mayo Clinic (USA) has some recommendations about reducing the chances you will suffer from halitosis (bad breath):

• Brush your teeth after you eat. In addition to my home toothbrushes, I have a toothbrush at the office to use after eating. Toothpaste with antibacterial properties can reduce bad breath odors.
• Floss at least once a day. Get those tiny food particles and plaque out from beneath your teeth.
• Brush your tongue. Your tongue has bacteria, so carefully brushing it may reduce odors. Some benefit from a tooth scraper, while others use a toothbrush with a built-in tongue cleaner.
• Clean dentures or dental appliances. If you wear a denture or bridge, clean it thoroughly at least once daily (or as directed by your dentist). If you have a mouth guard or dental retainer, clean it each time before you put it in your mouth. Your dentist can recommend the optimal cleaning product.
• Avoid dry mouth. Consume lots of water (not coffee, alcohol, or soft drinks). Try chewing gum or sucking on candy (ideally sugarless) to stimulate saliva. For chronic dry mouth, your physician or dentist may recommend an artificial saliva preparation or an oral medication that stimulates saliva flow.
• Adjust your diet. Avoid foods such as garlic and onions that can cause bad breath. Eating a lot of sugary foods is also linked with bad breath.
• Regularly get a new toothbrush. Change your toothbrush every three or four months, and choose a soft-bristled toothbrush when it becomes frayed.
• Schedule regular dental checkups. See your dentist regularly — typically twice annually — to have your teeth or dentures cleaned and examined. Your care provider may also suggest that you use an antimicrobial mouth rinse.

Halitosis (bad breath) and probiotics

A new meta-analysis discovered that consuming four probiotics can reduce bad breath-causing compounds, at least in the short term.

The beneficial probiotics (for the nerds amongst us) include Lactobacillus salivarius, Lactobacillus reuteri, Streptococcus salivarius, and Weissella cibaria. These substances, present in fermented foods, may benefit gut health. Probiotics may work magic by eliminating smelly volatile sulfur compounds (VSCs) buildup for up to four weeks.

Researchers recently published the study results in BMJ Open. For the research investigation, they analyzed seven randomized controlled trials. You might be surprised at how scientists detected halitosis levels. They had subjects close their mouths for one minute before exhaling into an evaluator’s nose from 10 centimeters away.

They then measured volatile sulphuric compounds using a halimeter, an instrument designed to measure gases.

Compared to control groups, subjective halitosis scores dropped by 58 percent. The volatile sulfuric compound scores dropped by about one-quarter (26 percent).

The probiotic-related improvements in volatile sulfuric compound scores did not last more than four weeks. However, the subjective improvements continued beyond four weeks.

One analyzed study showed probiotics led to less plaque buildup at 12 weeks. The meta-analysis authors appropriately note that the studies have varying methods, data reported, and bias risks.

There were significant differences between the studies regarding methodology, data reported, and risk of bias in their assessments.

Halitosis (bad breath) and food

Many individuals try to improve bad breath with gum chewing, but there may be more effective long-term strategies. Chewing gum without food may increase the chance of developing gastroesophageal reflux (GERD; heartburn).

Probiotic supplements may help reduce halitosis (bad breath), but what about consuming probiotic-containing foods?

Some sources of the probiotics Lactobacillus salivarius, Lactobacillus reuteri, and Streptococcus salivarius include fermented foods such as kefir, yogurt, kimchi, or pickled beetroot.

Other good food sources of probiotics include miso, real sauerkraut, sourdough bread, and fermented cheeses. How about kombucha? It is a type of sweetened black tea that uses fermentation to promote the growth of good bacteria. Consume any of these goods, and you are on your way to favorably changing your gut microbiome. Weissella cibariais bacteria in these foods allow them to ferment.

Certain health conditions and foods can cause bad breath, and many can improve their breath with proper dental hygiene. If simple self-care approaches daily to solve the problem, please see your dentist or other healthcare providers to ensure a more serious condition is not causing the halitosis.

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Diseases such as cystic fibrosis and the infections that may come with it and their seriousness to the lung are usually dependent on airway sampling at 2 to 3-month intervals, which permits bacterial infections to exist and grow. More readily available means of detecting these infections would seem to be a prudent method of ensuring high-quality healthcare for these patients. Might dogs be the answer?

It is now becoming evident that one means of detecting a variety of illnesses, whether viruses, bacteria, or others, may be monitored through the individual’s breath. Breath sampling, therefore, seems to be a desirable means of ongoing evaluation for potential illness or the presence of disease.

One of the most promising non-invasive diagnostic methods that has also attracted great research interest during the last years is breath analysis; the method detects gas-analytes such as exhaled volatile organic compounds (VOCs) and inorganic gases that are considered to be essential biomarkers for various disease types.

This type of analysis provides a less complicated method than procedures such as gastroscopy, laryngoscopy, and coronary angiography. In the process, it increases patient compliance for ongoing evaluation. Where do the dogs fit into this medical evaluation?

Research has indicated that more than 2000 VOCs have been detected in the breath, including hydrocarbons, alcohol, ketones, certain acids, aromatic compounds, sulfides, and other substances. These substances in the breath are associated with the environment and the person’s habits and can also be created by body temperature and metabolism.

Those VOCs produced in the airway or other parts of the human body are prime for trained dog scent detection. It should be noted that a dog’s scent detection can be more significant than 40 times a human’s ability to sense a scent. Some estimates place a dog’s sensitivity in this area at up to 10K that of humans, depending on the breed and the situation.

In 1989, the first report of a dog sniffing out its owner’s melanoma was reported. The woman had a pigmented lesion on her thigh, which had been removed and confirmed to be malignant melanoma.

She had been alerted to a problem by her dog repeatedly sniffing at the mole, and, at one time, the dog attempted to bite off the lesion when the patient wore shorts. Undoubtedly, the dog’s actions were primed by the scent of cancer, and it was trying to aid its owner. It has been noted that dogs frequently will smell and lick infected wounds.

What about stress? Breath and sweat samples have been used in recent studies to train dogs to differentiate between samples of stressed individual odors and those of blank samples.

Volatile organic compounds (VOCs) in the breath and sweat of stressed individuals were accurately detected between 90 to 96% of the time by trained dogs, indicating an understanding of the dog’s ability to detect stress. The researchers suggested that this ability to detect stress would be especially valuable for individuals with emotional support dogs or service dogs that could help them through periods of emotional turmoil with their support.

If a dog can detect stress because of the VOCs detected, would it be reasonable that they could also detect other emotions? The question will prompt others to research an extension of this study and may turn up some intriguing answers regarding the place of dogs in medicine and our emotional lives.

Considering the ability of dogs to be loving, faithful medical assets, can we make a case for dog ownership by healthy individuals even where dogs may not be permitted?

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No, it’s not simply getting out of doors in the fresh air and sunshine, there’s more to it than that, and the “more” is hidden from the human eye. But there’s even more we are learning about our physical senses and how they affect us in ways previously unknown.

For example, think of research that is now indicating we may pick our friends via a sense of smell that we both share. Is this too fantastic for words? The researchers indicate, Because humans seek friends who are similar to themselves, we hypothesized that humans may smell themselves and others to subconsciously estimate body odor similarity, which, in turn, may promote friendship. Are perfumes and other scents a subconscious acknowledgment of this feature of olfaction? Do we try to deceive in this way?

I don’t care for the term “body odor,” and I prefer “personal scent” in its place. Each of us does have a certain scent all our own and it runs in families which would mean it’s a function of our genetic inheritance.

Perhaps one of the most interesting aspects of human experience that we deny is that we, much like other animals on the planet, use our sense of smell in ways we never anticipated. Who would have thought that we might be prompted to initiate a friendship based on an unrealized scent that that person projects in the air around them. Of course, we laugh at this and call it absurd.

We’re not like dogs, cats and other animals that sniff out which one is going to be a friend and which one a foe. No, we are far superior to them; after all, we are the apex predator or whatever you wish to call us. We assume we are superior in every way and yet we’re not.

Research is now proving that our out-of-awareness ability to detect various scents in other persons promotes friendships or more intimate relationships. The hypothesis is that we gravitate toward those who have a scent that is similar to our own and there are areas in our brain that respond to this.

If scents are inducers to promote relationships, do they also provide an additional layer of understanding about that person’s emotional state at any time? Do scents vary over time according to emotions being experienced? Perhaps they do and this might also initiate in us feelings of empathy or concern regarding safety. We don’t have to ask someone to know how they are feeling if we can use our sense of smell, our olfactory receptors, to pick up the unseen that is present.

We are now considering something called chemosensory communication which may influence our human emotions such as friendship or a wish for closeness to someone else. The area has not been well studied up to the present time, but it is now receiving much more attention because of more sophisticated monitoring systems which we can engage. These chemical signals are seen as social cues, providing information that meshes well with our interests and can significantly affect how we act toward others.

One interesting fact in medicine, which had become apparent in the least 30 years, is that persons who are developing Alzheimer’s disease often experience a loss of smell initially. The test for it is now called the “peanut butter test.” Such a test for the sense of smell may indicate an area of the brain that is deteriorating. In fact, one of the tests that had been used in Alzheimer’s research previously had a rack of small vials containing a number of different scents.

I recall a woman coming in for our Alzheimer’s protocol who had no sense of smell. Why? Being a fastidious homemaker, she used a combination of cleaning ingredients that destroyed her nasal receptors almost completely.

There is also the thesis that the sense of smell can be used in a navigational sense. Utilizing this facility would be most important in detecting dangerous odors that might not be apparent to others and this brings up the question of personal sensitivity. Are some persons more sensitive to the scent of others? It may seem like an academic question, but it has interesting aspects to it.

Are you aware of the profession where people are referred to as a “nose?” A nose is a person who has such acute olfactory senses that they are utilized in the creation of scents for personal grooming. I suppose we could say that they could also be used for creating scents used in a very in a variety of other activities such as hunting or seeking out certain types of vermin. Hunters do use manufactured scents to attract certain animals.

Research begun in the 19th century by Paul Broca, discovered that there is an area in our brain that does provide signals regarding what our nostrils perceive. However, Broca also believed that humans are what is known as anosmatic, meaning that scent has little meaning in the lives of humans outside of perfumes, food, outdoor scents, flowers, etc. He foresaw a limited range for our sense of smell and this bias was passed down to us until the 20th century.

Another interesting fact of science is that although we have approximately 800 olfactory receptor genes that may detect one trillion olfactory stimuli, most of the receptors are non-functioning because of evolutionary change and our need to survive. While we may require fewer of these particular receptors, lower animals, such as dogs, have an extraordinary number. Dogs possess about 800 million receptors, making them especially keen to be able to pick up scents that are not in the human range.

We now know that chemosensory cues, usually associated with taste, are introduced to us through our mother’s milk and it is believed this is where the sense of bitter and sour originates. But what if the mother’s smell, is something that precipitates the initial priming of brain cells in the olfactory brain center regarding our interactions with others? Is that how family bonding begins? That’s a question that may be left for future researchers. But it does pique my interest.

The sense of smell is essential to us since it can provide pleasure and security and help us choose friends and mates. One researcher has hypothesized that we could have a more acute sense of smell if it had not been for evolution which negated the need for all these receptors. Of course, if something is still present, albeit not utilized, the potential exists for us to sharpen that sense and use it more in line with current culture.

Where will our sense of smell go in the future? Only the scientists involved in the research may provide the clue we seek.

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