What’s the difference between Alzheimer’s and dementia?
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What’s the difference? is a new editorial product that explains the similarities and differences between commonly confused health and medical terms, and why they matter.
Changes in thinking and memory as we age can occur for a variety of reasons. These changes are not always cause for concern. But when they begin to disrupt daily life, it could indicate the first signs of dementia.
Another term that can crop up when we’re talking about dementia is Alzheimer’s disease, or Alzheimer’s for short.
So what’s the difference?
What is dementia?
Dementia is an umbrella term used to describe a range of syndromes that result in changes in memory, thinking and/or behaviour due to degeneration in the brain.
To meet the criteria for dementia these changes must be sufficiently pronounced to interfere with usual activities and are present in at least two different aspects of thinking or memory.
For example, someone might have trouble remembering to pay bills and become lost in previously familiar areas.
It’s less-well known that dementia can also occur in children. This is due to progressive brain damage associated with more than 100 rare genetic disorders. This can result in similar cognitive changes as we see in adults.
So what’s Alzheimer’s then?
Alzheimer’s is the most common type of dementia, accounting for about 60-80% of cases.
So it’s not surprising many people use the terms dementia and Alzheimer’s interchangeably.
Changes in memory are the most common sign of Alzheimer’s and it’s what the public most often associates with it. For instance, someone with Alzheimer’s may have trouble recalling recent events or keeping track of what day or month it is.
We still don’t know exactly what causes Alzheimer’s. However, we do know it is associated with a build-up in the brain of two types of protein called amyloid-β and tau.
While we all have some amyloid-β, when too much builds up in the brain it clumps together, forming plaques in the spaces between cells. These plaques cause damage (inflammation) to surrounding brain cells and leads to disruption in tau. Tau forms part of the structure of brain cells but in Alzheimer’s tau proteins become “tangled”. This is toxic to the cells, causing them to die. A feedback loop is then thought to occur, triggering production of more amyloid-β and more abnormal tau, perpetuating damage to brain cells.
Alzheimer’s can also occur with other forms of dementia, such as vascular dementia. This combination is the most common example of a mixed dementia.
Vascular dementia
The second most common type of dementia is vascular dementia. This results from disrupted blood flow to the brain.
Because the changes in blood flow can occur throughout the brain, signs of vascular dementia can be more varied than the memory changes typically seen in Alzheimer’s.
For example, vascular dementia may present as general confusion, slowed thinking, or difficulty organising thoughts and actions.
Your risk of vascular dementia is greater if you have heart disease or high blood pressure.
Frontotemporal dementia
Some people may not realise that dementia can also affect behaviour and/or language. We see this in different forms of frontotemporal dementia.
The behavioural variant of frontotemporal dementia is the second most common form (after Alzheimer’s disease) of younger onset dementia (dementia in people under 65).
People living with this may have difficulties in interpreting and appropriately responding to social situations. For example, they may make uncharacteristically rude or offensive comments or invade people’s personal space.
Semantic dementia is also a type of frontotemporal dementia and results in difficulty with understanding the meaning of words and naming everyday objects.
Dementia with Lewy bodies
Dementia with Lewy bodies results from dysregulation of a different type of protein known as α-synuclein. We often see this in people with Parkinson’s disease.
So people with this type of dementia may have altered movement, such as a stooped posture, shuffling walk, and changes in handwriting. Other symptoms include changes in alertness, visual hallucinations and significant disruption to sleep.
Do I have dementia and if so, which type?
If you or someone close to you is concerned, the first thing to do is to speak to your GP. They will likely ask you some questions about your medical history and what changes you have noticed.
Sometimes it might not be clear if you have dementia when you first speak to your doctor. They may suggest you watch for changes or they may refer you to a specialist for further tests.
There is no single test to clearly show if you have dementia, or the type of dementia. A diagnosis comes after multiple tests, including brain scans, tests of memory and thinking, and consideration of how these changes impact your daily life.
Not knowing what is happening can be a challenging time so it is important to speak to someone about how you are feeling or to reach out to support services.
Dementia is diverse
As well as the different forms of dementia, everyone experiences dementia in different ways. For example, the speed dementia progresses varies a lot from person to person. Some people will continue to live well with dementia for some time while others may decline more quickly.
There is still significant stigma surrounding dementia. So by learning more about the various types of dementia and understanding differences in how dementia progresses we can all do our part to create a more dementia-friendly community.
The National Dementia Helpline (1800 100 500) provides information and support for people living with dementia and their carers. To learn more about dementia, you can take this free online course.
Nikki-Anne Wilson, Postdoctoral Research Fellow, Neuroscience Research Australia (NeuRA), UNSW Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Is Your Gut Leading You Into Osteoporosis?
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Bacterioides Vulgatus & Bone Health
We’ve talked before about the importance of gut health:
And we’ve shared quite some information and resources on osteoporosis:
- The Bare-bones Truth: Osteoporosis Mythbusting
- Osteoporosis Exercises (What To Do, And What To Avoid)
- Vit D + Calcium: Too Much Of A Good Thing?
- Collagen For Bones: We Are Such Stuff As Fish Are Made Of
- Which Osteoporosis Medication, If Any, Is Right For You?
How the two are connected
A recent study looked at Bacterioides vulgatus, a very common gut bacterium, and found that it suppresses the gut’s production of valeric acid, a short-chain fatty acid that enhances bone density:
❝For the study, researchers analyzed the gut bacteria of more than 500 peri- and post-menopausal women in China and further confirmed the link between B. vulgatus and a loss of bone density in a smaller cohort of non-Hispanic White women in the United States.❞
Pop-sci source: Does gut bacteria cause osteoporosis?
The study didn’t stop there, though. They proceeded to test, with a rodent model, the effect of giving them either:
- more B. vulgatus, or
- valeric acid supplements
The results of this were as expected:
- Those who were given more B. vulgatus got worse bone microstructure
- Those who were given valeric acid supplements got stronger bones overall
Study source: Gut microbiota impacts bone via Bacteroides vulgatus-valeric acid-related pathways
Where can I get valeric acid?
We couldn’t find a handy supplement for this, but it is in many foods, including avocados, blueberries, cocoa beans, and an assortment of birds.
Click here to see a more extensive food list (you’ll need to scroll down a little)
Bonus: if you happen to be on HRT in the form of Estradiol valerate (e.g: Progynova), then that “valerate” is an ester of valeric acid, that your body can metabolize and use as such.
Enjoy!
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Chiropractors have been banned again from manipulating babies’ spines. Here’s what the evidence actually says
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Chiropractors in Australia will not be able to perform spinal manipulation on children under the age of two once more, following health concerns from doctors and politicians.
But what is the spinal treatment at the centre of the controversy? Does it work? Is there evidence of harm?
We’re a team of researchers who specialise in evidence-based musculoskeletal health. I (Matt) am a registered chiropractor, Joshua is a registered physiotherapist and Giovanni trained as a physiotherapist.
Here’s what the evidence says.
Dmitry Naumov/Shutterstock Remind me, how did this all come about?
A Melbourne-based chiropractor posted a video on social media in 2018 using a spring-loaded device (known as the Activator) to manipulate the spine of a two-week-old baby suspended upside down by the ankles.
The video sparked widespread concerns among the public, medical associations and politicians. It prompted a ban on the procedure in young children. The Victorian health minister commissioned Safer Care Victoria to conduct an independent review of spinal manipulation techniques on children.
Recently, the Chiropractic Board of Australia reinstated chiropractors’ authorisation to perform spinal manipulation on babies under two years old. But this week, it backflipped, following heavy criticism from medical associations and politicians.
What is spinal manipulation?
Spinal manipulation is a treatment used by chiropractors and other health professionals such as doctors, osteopaths and physiotherapists.
It is an umbrella term that includes popular “back cracking” techniques.
It also includes more gentle forms of treatment, such as massage or joint mobilisations. These involve applying pressure to joints without generating a “cracking” sound.
Does spinal manipulation in babies work?
Several international guidelines for health-care professionals recommend spinal manipulation to treat adults with conditions such as back pain and headache as there is an abundance of evidence on the topic. For example, spinal manipulation for back pain is supported by data from nearly 10,000 adults.
For children, it’s a different story. Safer Care Victoria’s 2019 review of spinal manipulation found very few studies testing whether this treatment was safe and effective in children.
Studies were generally small and were of poor quality. Some of those small, poor-quality studies, suggest spinal manipulation provides a very small benefit for back pain, colic and potentially bedwetting – some common reasons for parents to take their child to see a chiropractor. But overall, the review found the overall body of evidence was very poor.
Spinal manipulation doesn’t seem to help young children with an ear infection. MIA Studio/Shutterstock However, for most other children’s conditions chiropractors treat – such as headache, asthma, otitis media (a type of ear infection), cerebral palsy, hyperactivity and torticollis (“twisted neck”) – there did not appear to be a benefit.
The number of studies investigating the effectiveness of spinal manipulation on babies under two years of age was even smaller.
There was one high-quality study and two small, poor quality studies. These did not show an appreciable benefit of spinal manipulation on colic, otitis media with effusion (known as glue ear) or twisted neck in babies.
Is spinal manipulation on babies safe?
In terms of safety, most studies in the review found serious complications were extremely rare. The review noted one baby or child dying (a report from Germany in 2001 after spinal manipulation by a physiotherapist). The most common complications were mild in nature such as increased crying and soreness.
However, because studies were very small, they cannot tell us anything about the safety of spinal manipulation in a reliable way. Studies that are designed to properly investigate if a treatment is safe typically include thousands of patients. And these studies have not yet been done.
Why do people see chiropractors?
Safer Care Victoria also conducted surveys with more than 20,000 people living in Australia who had taken their children under 12 years old to a chiropractor in the past ten years.
Nearly three-quarters said that was for treatment of a child aged two years or younger.
Nearly all people surveyed reported a positive experience when they took their child to a chiropractor and reported that their child’s condition improved with chiropractic care. Only a small number of people (0.3%) reported a negative experience, and this was mostly related to cost of treatment, lack of improvement in their child’s condition, excessive use of x-rays, and perceived pressure to avoid medications.
Many of the respondents had also consulted their GP or maternity/child health nurse.
What now for spinal manipulation in children?
At the request of state and federal ministers, the Chiropractic Board of Australia confirmed that spinal manipulation on babies under two years old will continue to be banned until it discusses the issue further with health ministers.
Many chiropractors believe this is unfair, especially considering the strong consumer support for chiropractic care outlined in the Safer Care Victoria report, and the rarity of serious reported harms in children.
Others believe that in the absence of evidence of benefit and uncertainty around whether spinal manipulation is safe in children and babies, the precautionary principle should apply and children and babies should not receive spinal manipulation.
Ultimately, high quality research is urgently needed to better understand whether spinal manipulation is beneficial for the range of conditions chiropractors provide it for, and whether the benefit outweighs the extremely small chance of a serious complication.
This will help parents make an informed choice about health care for their child.
Matt Fernandez, Senior lecturer and researcher in chiropractic, CQUniversity Australia; Giovanni E. Ferreira, NHMRC Emerging Leader Research Fellow, Institute of Musculoskeletal Health, University of Sydney, and Joshua Zadro, NHMRC Emerging Leader Research Fellow, Sydney Musculoskeletal Health, University of Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Oxygen Advantage – by Patrick McKeown
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You probably know to breathe through your nose, and use your diaphragm. What else does this book have to offer?
A lot of the book is aimed at fixing specific problems, and optimizing what can be optimized—including with tips and tricks you may not have encountered before. Yet, the offerings are not bizarre either; we don’t need to learn to breathe through our ears while drinking a glass of water upside down or anything.
Rather, such simple things as improving one’s VO₂Max by occasionally holding one’s breath while walking briskly. But, he advises specifically, this should be done by pausing the breath halfway through the exhalation (a discussion of the ensuing physiological response is forthcoming).
Little things like that are woven throughout the book, whose style is mostly anecdotal rather than hard science, yet is consistent with broad scientific consensus in any case.
Bottom line: if you’ve any reason to think your breathing might be anything less than the best it could possibly be, this book is likely to help you to tweak it to be a little better.
Click here to check out The Oxygen Advantage, and get yours!
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ADHD 2.0 – by Dr. Edward Hallowell & Dr. John Ratey
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A lot of ADHD literature is based on the assumption that the reader is a 30-something parent of a child with ADHD. This book, on the other hand, addresses all ages, and includes just as readily the likelihood that the person with ADHD is the reader, and/or the reader’s partner.
The authors cover such topics as:
- ADHD mythbusting, before moving on to…
- The problems of ADHD, and the benefits that those exact same traits can bring too
- How to leverage those traits to get fewer of the problems and more of the benefits
- The role of diet beyond the obvious, including supplementation
- The role of specific exercises (especially HIIT, and balance exercises) in benefiting the ADHD brain
- The role of medications—and arguments for and gainst such
The writing style is… Thematic, let’s say. The authors have ADHD and it shows. So, expect comprehensive deep-dives from whenever their hyperfocus mode kicked in, and expect no stones left unturned. That said, it is very readable, and well-indexed too, for ease of finding specific sub-topics.
Bottom line: if you are already very familiar with ADHD, you may not learn much, and might reasonably skip this one. However, if you’re new to the topic, this book is a great—and practical—primer.
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Not quite an introvert or an extrovert? Maybe you’re an ambivert
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Our personalities are generally thought to consist of five primary factors: openness to experience, conscientiousness, extroversion, agreeableness and neuroticism, with each of us ranking low to high for each.
Extroversion is one of the Big Five personality traits. Big 5 personality traits graphic Those who rank high in extroversion, known as extroverts, typically focus on their external world. They tend to be more optimistic, recharge by socialising and enjoy social interaction.
On the other end of the spectrum, introverts are more likely to be quiet, deep thinkers, who recharge by being alone and learn by observing (but aren’t necessarily shy).
But what if you’re neither an introvert or extrovert – or you’re a bit of both? Another category might fit better: ambiverts. They’re the middle of the spectrum and are also called “social introverts”.
What exactly is an ambivert?
The term ambivert emerged in 1923. While it was not initially embraced as part of the introvert-extrovert spectrum, more recent research suggests ambiverts are a distinct category.
Ambiverts exhibit traits of both extroverts and introverts, adapting their behaviour based on the situation. It may be that they socialise well but need solitude and rest to recharge, and they intuitively know when to do this.
Ambiverts seems to have the following characteristics:
- good communication skills, as a listener and speaker
- ability to be a peacemaker if conflict occurs
- leadership and negotiation skills, especially in teams
- compassion and understanding for others.
Some research suggests ambiverts make up a significant portion of the population, with about two-thirds of people falling into this category.
What makes someone an ambivert?
Personality is thought to be 50% inherited, with the remaining being influenced by environmental factors and individual experiences.
Emerging research has found physical locations of genes on chromosomes closely aligned with extroversion-introversion traits.
So, chances are, if you are a blend of the two styles as an ambivert, one of your parents may be too.
What do ambiverts tend to be good at?
Ambiverts are flexible with talking and also listening. Cotton Bro Studios/Pexels One area of research focus in recent decades has been personality type and job satisfaction. One study examined 340 introverts, extroverts and ambiverts in sales careers.
It has always been thought extroverts were more successful with sales. However, the author found ambiverts were more influential and successful.
They may have a sales advantage because of their ability to read the situation and modify their behaviour if they notice a customer is not interested, as they’re able to reflect and adapt.
Ambiverts stress less than introverts
Generally, people lower in extroversion have higher stress levels. One study found introverts experience more stress than both ambiverts and extroverts.
It may be that highly sensitive or introverted individuals are more susceptible to worry and stress due to being more perfectionistic.
Ambiverts are adept at knowing when to be outgoing and when to be reflective, showcasing a high degree of situational awareness. This may contribute to their overall wellbeing because of how they handle stress.
What do ambiverts tend to struggle with?
Ambiverts may overextend themselves attempting to conform or fit in with many social settings. This is termed “overadaptation” and may force ambiverts to feel uncomfortable and strained, ultimately resulting in stress or burnout.
Ambiverts tend to handle stress well but feel strained when overadapting. Cottonbro Studios/Pexels But personality traits aren’t fixed
Regardless of where you sit on the scale of introversion through to extroversion, the reality is it may not be fixed. Different situations may be more comfortable for introverts to be social, and extroverts may be content with quieter moments.
And there are also four other key personality traits – openness to experience, conscientiousness, agreeableness and neuroticism – which we all possess in varying levels, and are expressed in different ways, alongside our levels of extroversion.
There is also evidence our personality traits can change throughout our life spans are indeed open to change.
Peta Stapleton, Associate Professor in Psychology, Bond University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Women Rowing North – by Dr. Mary Pipher
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Ageism is rife, as is misogyny. And those can be internalized too, and compounded as they intersect.
Clinical psychologist Dr. Mary Pipher, herself 75, writes for us a guidebook of, as the subtitle goes, “navigating life’s currents and flourishing as we age”.
The book does assume, by the way, that the reader is…
- a woman, and
- getting old (if not already old)
However, the lessons the book imparts are vital for women of any age, and valuable as a matter of insight and perspective for any reader.
Dr. Pipher takes us on a tour of aging as a woman, and what parts of it we can make our own, do things our way, and take what joy we can from it.
Nor is the book given to “toxic positivity” though—it also deals with themes of hardship, frustration, and loss.
When it comes to those elements, the book is… honest, human, and raw. But also, an exhortation to hope, beauty, and a carpe diem attitude.
Bottom line: this book is highly recommendable to anyone of any age; life is precious and can be short. And be we blessed with many long years, this book serves as a guide to making each one of them count.
Click here to check out Women Rowing North—it really is worth it
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