Tastes from our past can spark memories, trigger pain or boost wellbeing. Here’s how to embrace food nostalgia
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Have you ever tried to bring back fond memories by eating or drinking something unique to that time and place?
It could be a Pina Colada that recalls an island holiday? Or a steaming bowl of pho just like the one you had in Vietnam? Perhaps eating a favourite dish reminds you of a lost loved one – like the sticky date pudding Nanna used to make?
If you have, you have tapped into food-evoked nostalgia.
As researchers, we are exploring how eating and drinking certain things from your past may be important for your mood and mental health.
Bittersweet longing
First named in 1688 by Swiss medical student, Johannes Hoffer, nostalgia is that bittersweet, sentimental longing for the past. It is experienced universally across different cultures and lifespans from childhood into older age.
But nostalgia does not just involve positive or happy memories – we can also experience nostalgia for sad and unhappy moments in our lives.
In the short and long term, nostalgia can positively impact our health by improving mood and wellbeing, fostering social connection and increasing quality of life. It can also trigger feelings of loneliness or meaninglessness.
We can use nostalgia to turn around a negative mood or enhance our sense of self, meaning and positivity.
Research suggests nostalgia alters activity in the brain regions associated with reward processing – the same areas involved when we seek and receive things we like. This could explain the positive feelings it can bring.
Nostalgia can also increase feelings of loneliness and sadness, particularly if the memories highlight dissatisfaction, grieving, loss, or wistful feelings for the past. This is likely due to activation of brain areas such as the amygdala, responsible for processing emotions and the prefrontal cortex that helps us integrate feelings and memories and regulate emotion.
How to get back there
There are several ways we can trigger or tap into nostalgia.
Conversations with family and friends who have shared experiences, unique objects like photos, and smells can transport us back to old times or places. So can a favourite song or old TV show, reunions with former classmates, even social media posts and anniversaries.
What we eat and drink can trigger food-evoked nostalgia. For instance, when we think of something as “comfort food”, there are likely elements of nostalgia at play.
Foods you found comforting as a child can evoke memories of being cared for and nurtured by loved ones. The form of these foods and the stories we tell about them may have been handed down through generations.
Food-evoked nostalgia can be very powerful because it engages multiple senses: taste, smell, texture, sight and sound. The sense of smell is closely linked to the limbic system in the brain responsible for emotion and memory making food-related memories particularly vivid and emotionally charged.
But, food-evoked nostalgia can also give rise to negative memories, such as of being forced to eat a certain vegetable you disliked as a child, or a food eaten during a sad moment like a loved ones funeral. Understanding why these foods evoke negative memories could help us process and overcome some of our adult food aversions. Encountering these foods in a positive light may help us reframe the memory associated with them.
What people told us about food and nostalgia
Recently we interviewed eight Australians and asked them about their experiences with food-evoked nostalgia and the influence on their mood. We wanted to find out whether they experienced food-evoked nostalgia and if so, what foods triggered pleasant and unpleasant memories and feelings for them.
They reported they could use foods that were linked to times in their past to manipulate and influence their mood. Common foods they described as particularly nostalgia triggering were homemade meals, foods from school camp, cultural and ethnic foods, childhood favourites, comfort foods, special treats and snacks they were allowed as children, and holiday or celebration foods. One participant commented:
I guess part of this nostalgia is maybe […] The healing qualities that food has in mental wellbeing. I think food heals for us.
Another explained
I feel really happy, and I guess fortunate to have these kinds of foods that I can turn to, and they have these memories, and I love the feeling of nostalgia and reminiscing and things that remind me of good times.
Understanding food-evoked nostalgia is valuable because it provides us with an insight into how our sensory experiences and emotions intertwine with our memories and identity. While we know a lot about how food triggers nostalgic memories, there is still much to learn about the specific brain areas involved and the differences in food-evoked nostalgia in different cultures.
In the future we may be able to use the science behind food-evoked nostalgia to help people experiencing dementia to tap into lost memories or in psychological therapy to help people reframe negative experiences.
So, if you are ever feeling a little down and want to improve your mood, consider turning to one of your favourite comfort foods that remind you of home, your loved ones or a holiday long ago. Transporting yourself back to those times could help turn things around.
Megan Lee, Senior Teaching Fellow, Psychology, Bond University; Doug Angus, Assistant Professor of Psychology, Bond University, and Kate Simpson, Sessional academic, Bond University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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What You Don’t Know Can Kill You
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Knowledge Is Power!
This is Dr. Simran Malhotra. She’s triple board-certified (in lifestyle medicine, internal medicine, and palliative care), and is also a health and wellness coach.
What does she want us to know?
Three things:
Wellness starts with your mindset
Dr. Malhotra shifted her priorities a lot during the initial and perhaps most chaotic phase of the COVID pandemic:
❝My husband, a critical care physician, was consumed in the trenches of caring for COVID patients in the ICU. I found myself knee-deep in virtual meetings with families whose loved ones were dying of severe COVID-related illnesses. Between the two of us, we saw more trauma, suffering, and death, than we could have imagined.
The COVID-19 pandemic opened my eyes to how quickly life can change our plans and reinforced the importance of being mindful of each day. Harnessing the power to make informed decisions is important, but perhaps even more important is focusing on what is in our control and taking action, even if it is the tiniest step in the direction we want to go!❞
~ Dr. Simran Malhotra
We can only make informed decisions if we have good information. That’s one of the reasons we try to share as much information as we can each day at 10almonds! But a lot will always depend on personalized information.
There are one-off (and sometimes potentially life-saving) things like health genomics:
The Real Benefit Of Genetic Testing
…but also smaller things that are informative on an ongoing basis, such as keeping track of your weight, your blood pressure, your hormones, and other metrics. You can even get fancy:
Track Your Blood Sugars For Better Personalized Health
Lifestyle is medicine
It’s often said that “food is medicine”. But also, movement is medicine. Sleep is medicine. In short, your lifestyle is the most powerful medicine that has ever existed.
Lifestyle encompasses very many things, but fortunately, there’s an “80:20 rule” in play that simplifies it a lot because if you take care of the top few things, the rest will tend to look after themselves:
These Top Few Things Make The Biggest Difference To Overall Health
Gratitude is better than fear
If we receive an unfavorable diagnosis (and let’s face it, most diagnoses are unfavorable), it might not seem like something to be grateful for.
But it is, insofar as it allows us to then take action! The information itself is what gives us our best chance of staying safe. And if that’s not possible e.g. in the worst case scenario, a terminal diagnosis, (bearing in mind that one of Dr. Malhotra’s three board certifications is in palliative care, so she sees this a lot), it at least gives us the information that allows us to make the best use of whatever remains to us.
See also: Managing Your Mortality
Which is very important!
…and/but possibly not the cheeriest note on which to end, so when you’ve read that, let’s finish today’s main feature on a happier kind of gratitude:
How To Get Your Brain On A More Positive Track (Without Toxic Positivity)
Want to hear more from Dr. Malhotra?
Showing how serious she is about how our genes do not determine our destiny and knowledge is power, here she talks about her “previvor’s journey”, as she puts it, with regard to why she decided to have preventative cancer surgery in light of discovering her BRCA1 genetic mutation:
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Take care!
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Is Fast Food Really All That Bad?
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Yes, yes it is. However, most people misunderstand the nature of its badness, which is what causes problems. The biggest problem is not the acute effects of one afternoon’s burger and fries; the biggest problem is the gradual slide into regularly eating junk food, and the long-term effects of that habit as our body changes to accommodate it (of which, people tend to focus on subcutaneous fat gain as it’s usually the most visible, but that’s really the least of our problems).
Cumulative effects
There are, of course, immediate negative effects too, and they’re not without cause for concern. Because of the composition of most junk food, it will almost by definition result in immediate blood sugar spikes, rising insulin levels, and a feeling of fatigue not long afterwards.
- Within a week of regularly consuming junk food, gut bacteria will change, resulting in moderate cravings, as well as a tendency towards depression and anxiety. Mood swings are likely, as are the gastrointestinal woes associated with any gut microbiota change.
- Within two weeks, those effects will be greater, the cravings will increase, energy levels will plummet, and likely skin issues may start to show up (our skin mostly works on a 3-week replacement cycle; some things can show up in the skin more quickly or slowly than that, though).
- Within three weeks, the rest of our blood metrics (e.g. beyond blood sugar imbalances) will start to stray from safe zones. Increased LDL, decreased HDL, and the beginnings of higher cardiovascular disease risk and diabetes risk.
- Within a month, we will likely see the onset of non-alcoholic fatty liver disease, and chronic inflammation sets in, raising the risk of a lot of other diseases, especially immune disorders and cancer.
If that seems drastic, along the lines of “eat junk food for a month and get cancer”, well, it’s an elevated risk, not a scheduled diagnosis, but the body is constantly rebuilding itself, for better or for worse, and if we sabotage its efforts by consuming a poor diet, then it will be for worse.
The good news is: this works both ways, and we can get our body back on track in fairly short order too, by enjoying a healthier diet; our body will be thrilled to start repairing itself. And of course, all these effects, good and bad, are proportional to how well or badly we eat. There’s a difference between doing a “Supersize Me” month-long 100% junk food diet, and “merely” getting a junk food breakfast each day and eating healthily later.
In short, if your diet is only moderately bad, then you will only be moderately unwell.
For more on all of this, enjoy:
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Want to learn more?
You might also like to read:
- Fix Chronic Fatigue & Regain Your Energy, By Science
- How To Unfatty A Fatty Liver
- How to Prevent (or Reduce) Inflammation
Take care!
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Ruminating vs Processing
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
When it comes to traumatic experiences, there are two common pieces of advice for being able to move forwards functionally:
- Process whatever thoughts and feelings you need to process
- Do not ruminate
The latter can seem, at first glance, a lot like the former. So, how to tell them apart, and how to do one without the other?
Getting tense
One major difference between the two is the tense in which our mental activity takes place:
- processing starts with the traumatic event (or perhaps even the events leading up to the traumatic event), analyses what happened and if possible why, and then asks the question “ok, what now?” and begins work on laying out a path for the future.
- rumination starts with the traumatic event (or perhaps even the events leading up to the traumatic event), analyses what happened and if why, oh why oh why, “I was such an idiot, if only I had…” and gets trapped in a fairly tight (and destructive*) cycle of blame and shame/anger, never straying far from the events in question.
*this may be directly self-destructive, but it can also sometimes be only indirectly self-destructive, for example if the blame and anger is consciously placed with someone else.
This idea fits in, by the way, with Dr. Elisabeth Kübler-Ross’s “five stages of grief” model; rumination here represents the stages “bargaining”, “despair”, and “anger”, while emotional processing here represents the stage “acceptance”. Thus, it may be that rumination does have a place in the overall process—just don’t get stuck there!
For more on healthily processing grief specifically:
What Grief Does To The Body (And How To Manage It)
Grief, by the way, can be about more than the loss of a loved one; a very similar process can play out with many other kinds of unwanted life changes too.
What are the results?
Another way to tell them apart is to look at the results of each. If you come out of a long rumination session feeling worse than when you started, it’s highly unlikely that you just stopped too soon and were on the verge of some great breakthrough. It’s possible! But not likely.
- Processing may be uncomfortable at first, and if it’s something you’ve ignored for a long time, that could be very uncomfortable at first, but there should quite soon be some “light at the end of the tunnel”. Perhaps not even because a solution seems near, but because your mind and body recognize “aha, we are doing something about it now, and thus may find a better way forward”.
- Rumination tends to intensify and prolong uncomfortable emotions, increases stress and anxiety, and likely disrupts sleep. At best, it may serve as a tipping point to seek therapy or even just recognize “I should figure out a way to deal with this, because this isn’t doing me any good”. At worst, it may serve as a tipping point to depression, and/or substance abuse, and/or suicidality.
See also: How To Stay Alive (When You Really Don’t Want To) ← which also has a link back to our article on managing depression, by the way!
Did you choose it, really?
A third way to tell them apart is the level of conscious decision that went into doing it.
- Processing is almost always something that one decides “ok, let’s figure this out”, and sits down to figure it out.
- Rumination tends to be about as voluntary as social media doomscrolling. Technically we may have decided to begin it (we also might not have made any conscious decision, and just acted on impulse), but let’s face it, our hands weren’t at the wheel for long, at all.
A good way to make sure that it is a conscious process, is to schedule time for it in advance, and then do it only during that time. If thoughts about it come up at other times, tell yourself “no, leave that for later”, and then deal with it when (and only when) the planned timeslot arrives.
It’s up to you and your schedule what time you pick, but if you’re unsure, consider an hour in the early evening. That means that the business of the day is behind you, but it’s also not right before bed, so you should have some decompression time as a buffer. So for example, perhaps after dinner you might set a timer* for an hour, and sit down to journal, brainstorm, or just plain think, about the matter that needs processing.
*electronic timers can be quite jarring, and may distract you while waiting for the beeps. So, consider investing in a relaxing sand timer like this one instead.
Is there any way to make rumination less bad?
As we mentioned up top, there’s a case to be made for “rumination is an early part of the process that gets us where we need to go, and may not be skippable, or may not be advisable to skip”.
So, if you are going to ruminate, then firstly, we recommend again bordering it timewise (with a timer as above) and having a plan to pull yourself out when you’re done rather than getting stuck there (such as: The Off-Button For Your Brain: How To Stop Negative Thought Spirals).
And secondly, you might want to consider the following technique, which allows one to let one’s brain know that the thing we’re thinking about / imagining is now to be filed away safely; not lost or erased, but sent to the same place that nightmares go after we wake up:
A Surprisingly Powerful Tool: Eye Movement Desensitization & Reprocessing (EMDR)
What if I actually do want to forget?
That’s not usually recommendable; consider talking it through with a therapist first. However, for your interest, there is a way:
The Dark Side Of Memory (And How To Forget)
Take care!
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Human Connection In An All-Too-Busy World
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Many of us, in many ways, have more discretionary time than ever… On paper.
But rather than the 8-hour block of work of yesteryear, nowadays the things that take our time often come in a series of short bursts that punctuate our day.
This means that while in theory, we have n hours of “free” time per day, we actually have 9 minutes here, 23 minutes there, 1 hour 6 minutes somewhere else, and so on.
Social commitments, meanwhile, tend to require not only that we have time in a block, but also, that the time around that block also be sufficiently free, for travelling, preparation, etc.
The result? “We must do this again, and not leave it so long next time!” we say, sincerely, to the friend whom we will next see again in approximately 17 months’ time.
The problem is how our many theoretically-small obligations reduce the rest of our time to “time confetti”, and that happens on the large scale like we saw above, as well as on the small scale of “Ah, I have an hour to relax between these two things” and then suddenly the time is gone, once again reduced to time confetti:
Time Confetti and the Broken Promise of Leisure
So, how to maintain human connection with people beyond those with whom we live?
Some is infinitely better than none
Let’s say you want to call a friend or relative. There may be generational differences in how much one is expected to arrange this by text first, vs just calling, but either way, you don’t have to have an open-ended block of time, and sometimes, it’s better if you don’t.
Establish, at the start of the call, “Before we get into catching up, how are we for time, by the way? For my part, I’ll have to go by such-and-such a time”, and then work with that.
The benefit of doing this is that you’ll both know enough about the time constraints to use the time appropriately; you won’t run out the clock on smalltalk before getting to something big, and you’ll both come away feeling satisfied that you shared and were shared-with in a meaningful fashion.
In contrast, guessing at time constraints can leave big things clipped off, or else result in someone “looking for a way to politely end this conversation that stopped being interesting a while ago but it’ll seem rude if I say I have to go now”, of the kind that results in someone not being so open to a call next time.
Don’t rush to dismiss texts as a medium for meaningful connection
When text messages were first a thing, you’ll remember how we were all working within a very short character limit and a cost-per-message. It was telegrams for the modern age, basically.
Nowadays, that isn’t so; we can write as much or as little as we like, and this has two benefits:
- We can have longer, meaningful conversations around the other stuff in our life. We can reply in seconds, or after making a cup of tea and thinking about it, or after our grocery-chopping trip, or whenever suits us. Suddenly, time confetti isn’t such a barrier to human connection. Writer’s example: my prime social time in this manner is when I’m cooking dinner (which is often about an hour). There’s no way I could have a phonecall while doing that; my bad hearing notwithstanding, I just have my hands full too often with much else going on. But texting? I can do that in the several-minute gaps between assorted culinary tasks, while I’m waiting for the kettle to boil or the onions to brown or whatever.
- Sometimes, the brevity makes it easier. A quick text saying “Hey, just to let you know I’m thinking of you, and hope your day is going well!”, or “Unrelated to anything: I was just thinking about how I’m glad to have you in my life; you’re a good friend, and I appreciate that more than I often remember to say. Anyway, that’s all; it was just on my mind. I hope your day is going well!”
(The cheery closing words in those last two text message examples help signify: “don’t worry, I’m fine and am not looking for anything from you”, which will help the recipient to relax, and counterintuitively, more likely to reply with some kind words of their own, knowing that they’re not signing up for a potentially deep talk when they also have time confetti issues going on)
Seize the moment (and also let it go)
You probably have many small interactions with strangers, most days. In the store, walking the dog, at the doctor’s office, etc. So, two things:
- Make smalltalk. And if you’re not one for traditional smalltalk topics (weather etc), or even if you are, a level-up is:
- Compliment sincerely. Straight out of “How To Win Friends And Influence People”, of course, but it creates a moment of genuine connection; you say a thing, their day is improved, they smile, you complete your business with a smile of your own and go about your day.
(of course, do steer clear of anything that could be interpreted as flirting, if that is not your intent, and really it should never be your intent when it comes to the captive audience of someone who will get fired if they’re not nice to you)
But, with a little practice, these little moments add up to a lot more human connection than if we treat the strangers with whom we interact as though they were merely part of the scenery.
Want more than that?
Check out:
How To Beat Loneliness & Isolation
Take care!
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How To Grow New Brain Cells (At Any Age)
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How To Grow New Brain Cells (At Any Age)
It was long believed that brain growth could not occur later in life, due to expending our innate stock of pluripotent stem cells. However, this was mostly based on rodent studies.
Rodent studies are often used for brain research, because it’s difficult to find human volunteers willing to have their brains sliced thinly (so that the cells can be viewed under a microscope) at the end of the study.
However, neurobiologist Dr. Maura Boldrini led a team that did a lot of research by means of autopsies on the hippocampi of (previously) healthy individuals ranging in age from 14 to 79.
What she found is that while indeed the younger subjects did predictably have more young brain cells (neural progenitors and immature neurons), even the oldest subject, at the age of 79, had been producing new brain cells up until death.
Read her landmark study: Human Hippocampal Neurogenesis Persists throughout Aging
There was briefly a flurry of news articles about a study by Dr. Shawn Sorrels that refuted this, however, it later came to light that Dr. Sorrels had accidentally destroyed his own evidence during the cell-fixing process—these things happen; it’s just unfortunate the mistake was not picked up until after publication.
A later study by a Dr. Elena Moreno-Jiménez fixed this flaw by using a shorter fixation time for the cell samples they wanted to look at, and found that there were tens of thousands of newly-made brain cells in samples from adults ranging from 43 to 87.
Now, there was still a difference: the samples from the youngest adult had 30% more newly-made braincells than the 87-year-old, but given that previous science thought brain cell generation stopped in childhood, the fact that an 87-year-old was generating new brain cells 30% less quickly than a 43-year-old is hardly much of a criticism!
As an aside: samples from patients with Alzheimer’s also had a 30% reduction in new braincell generation, compared to samples from patients of the same age without Alzheimer’s. But again… Even patients with Alzheimer’s were still growing some new brain cells.
Read it for yourself: Adult hippocampal neurogenesis is abundant in neurologically healthy subjects and drops sharply in patients with Alzheimer’s disease
Practical advice based on this information
Since we can do neurogenesis at any age, but the rate does drop with age (and drops sharply in the case of Alzheimer’s disease), we need to:
Feed your brain. The brain is the most calorie-consuming organ we have, by far, and it’s also made mostly of fat* and water. So, get plenty of healthy fats, and get plenty of water.
*Fun fact: while depictions in fiction (and/or chemically preserved brains) may lead many to believe the brain has a rubbery consistency, the untreated brain being made of mostly fat and water gives it more of a blancmange-like consistency in reality. That thing is delicate and spatters easily. There’s a reason it’s kept cushioned inside the strongest structure of our body, far more protected than anything in our torso.
Exercise. Specifically, exercise that gets your blood pumping. This (as our earlier-featured video today referenced) is one of the biggest things we can do to boost Brain-Derived Neurotrophic Factor, or BDNF.
Here be science: Brain-Derived Neurotrophic Factor, Depression, and Physical Activity: Making the Neuroplastic Connection
However, that’s not the only way to increase BDNF; another is to enjoy a diet rich in polyphenols. These can be found in, for example, berries, tea, coffee, and chocolate. Technically those last two are also botanically berries, but given how we usually consume them, and given how rich they are in polyphenols, they merit a special mention.
See for example: Effects of nutritional interventions on BDNF concentrations in humans: a systematic review
Some supplements can help neuron (re)growth too, so if you haven’t already, you might want to check out our previous main feature on lion’s mane mushroom, a supplement which does exactly that.
For those who like videos, you may also enjoy this TED talk by neuroscientist Dr. Sandrine Thuret:
Prefer text? Click here to read the transcript
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Toothpastes & Mouthwashes: Which Help And Which Harm?
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Toothpastes and mouthwashes: which kinds help, and which kinds harm?
You almost certainly brush your teeth. You might use mouthwash. A lot of people floss for three weeks at a time, often in January.
There are a lot of options for oral hygiene; variations of the above, and many alternatives too. This is a big topic, so rather than try to squeeze it all in one, this will be a several-part series.
For today, let’s look at toothpastes and mouthwashes, to start!
Toothpaste options
Toothpastes may contain one, some, or all of the following, so here are some notes on those:
Fluoride
Most toothpastes contain fluoride; this is generally recognized as safe though is not without its controversies. The fluoride content is the reason it’s recommended not to swallow toothpaste, though.
The fluoride in toothpaste can cause some small problems if overused; if you see unusually white patches on your teeth (your teeth are supposed to be ivory-colored, not truly white), that is probably a case of localized overcalcification because of the fluoride, and yes, you can have too much of a good thing.
Overall, the benefits are considered to far outweigh the risks, though.
Baking soda
Whether by itself or as part of a toothpaste, baking soda is a safe and effective choice, not just for cosmetic purposes, but for boosting genuine oral hygiene too:
- Enhanced plaque removal to improve gingival health: 3-month randomized clinical study of the effects of baking soda toothpaste on plaque and gingivitis
- The effects of two baking-soda toothpastes in enhancing mechanical plaque removal and improving gingival health: A 6-month randomized clinical study
- The efficacy of baking soda dentifrice in controlling plaque and gingivitis: A systematic review
Activated charcoal
Activated charcoal is great at removing many chemicals from things it touches. That includes the kind you might see on your teeth in the form of stains.
A topical aside on safety: activated charcoal is a common ingredient in a lot of black-colored Halloween-themed foods and drinks around this time of year. Beware, if you ingest these, there’s a good chance of it also cleaning out any meds you are taking. Ask your pharmacist about your own personal meds, but meds that (ingested) activated charcoal will usually remove include:
- Oral HRT / contraceptives
- Antidepressants (many kinds)
- Heart medications (at least several major kinds)
Toothpaste, assuming you are spitting-not-swallowing, won’t remove your medications though. Nor, in case you were worrying, will it strip tooth enamel, even if you have extant tooth enamel erosion:
Source: Activated charcoal toothpastes do not increase erosive tooth wear
However, it’s of no special extra help when it comes to oral hygiene itself, just removing stains.
So, if you’d like to use it for cosmetic reasons, go right ahead. If not, no need.
Hydrogen peroxide
This is generally not a good idea, speaking for the health. For whitening, yes, it works. But for health, not so much:
To be clear, when they say “alter”, they mean “in a bad way”. It increases inflammation and tissue damage.
If buying commercially-available whitening toothpaste made with hydrogen peroxide, the academic answer is that it’s a lottery, because brands’ proprietorial compounding processes vary widely and constantly with little oversight and even less transparency:
Is whitening toothpaste safe for dental health?: RDA-PE method
Mouthwash options
In the case of fluoride and hydrogen peroxide, the same advice (for and against) goes as per toothpaste.
Alcohol
There has been some concern about the potential carcinogenic effect of alcohol-based mouthwashes. According to the best current science, this one’s not an easy yes-or-no, but rather:
- If there are no other cancer risk factors, it does not seem to increase cancer risk
- If there are other cancer risk factors, it does make the risk worse
Read more:
- Does the use of alcohol mouthwash increase the risk of developing oral cancer?
- Alcohol-based mouthwash as a risk factor of oral cancer: A systematic review
Non-Alcohol
Non-alcoholic mouthwashes are not without their concerns either. In this case, the potential problem is changing the oral microbiome (we are supposed to have one!), and specifically, that the spread of what it kills and what it doesn’t may result in an imbalance that causes a lowering of the pH of the mouth.
Put differently: it makes your saliva more acidic.
Needless to say, that can cause its own problems for teeth. The research on this is still emerging, with regard to whether the benefits outweigh the problems, but the fact that it has this effect seems to be a consensus. Here’s an example paper; there are others:
Effects of Chlorhexidine mouthwash on the oral microbiome
Flossing, scraping, and alternatives
These are important (and varied, and interesting) enough to merit their own main feature, rather than squeezing them in at the end.
So, watch this space for a main feature on these soon!
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