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.

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.

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.

The vagina is an internal organ with a complex ecosystem, influenced by circulating hormone levels which change during the menstrual cycle, pregnancy, breastfeeding and menopause.

Around and after menopause, there are normal changes in the growth and function of vaginal cells, as well as the vagina’s microbiome (groups of bacteria living in the vagina). Many women won’t notice these changes. They don’t usually cause symptoms or concern, but if they do, symptoms can usually be managed.

Here’s what happens to your vagina as you age, whether you notice or not.

Let’s clear up the terminology

We’re focusing on the vagina, the muscular tube that goes from the external genitalia (the vulva), past the cervix, to the womb (uterus). Sometimes the word “vagina” is used to include the external genitalia. However, these are different organs and play different roles in women’s health.

What happens to the vagina as you age?

Like many other organs in the body, the vagina is sensitive to female sex steroid hormones (hormones) that change around puberty, pregnancy and menopause.

Menopause is associated with a drop in circulating oestrogen concentrations and the hormone progesterone is no longer produced. The changes in hormones affect the vagina and its ecosystem. Effects may include:

• less vaginal secretions, potentially leading to dryness
• less growth of vagina surface cells resulting in a thinned lining
• alteration to the support structure (connective tissue) around the vagina leading to less elasticity and more narrowing
• fewer blood vessels around the vagina, which may explain less blood flow after menopause
• a shift in the type and balance of bacteria, which can change vaginal acidity, from more acidic to more alkaline.

What symptoms can I expect?

Many women do not notice any bothersome vaginal changes as they age. There’s also little evidence many of these changes cause vaginal symptoms. For example, there is no direct evidence these changes cause vaginal infection or bleeding in menopausal women.

Some women notice vaginal dryness after menopause, which may be linked to less vaginal secretions. This may lead to pain and discomfort during sex. But it’s not clear how much of this dryness is due to menopause, as younger women also commonly report it. In one study, 47% of sexually active postmenopausal women reported vaginal dryness, as did around 20% of premenopausal women.

Other organs close to the vagina, such as the bladder and urethra, are also affected by the change in hormone levels after menopause. Some women experience recurrent urinary tract infections, which may cause pain (including pain to the side of the body) and irritation. So their symptoms are in fact not coming from the vagina itself but relate to changes in the urinary tract.

Not everyone has the same experience

Women vary in whether they notice vaginal changes and whether they are bothered by these to the same extent. For example, women with vaginal dryness who are not sexually active may not notice the change in vaginal secretions after menopause. However, some women notice severe dryness that affects their daily function and activities.

In fact, researchers globally are taking more notice of women’s experiences of menopause to inform future research. This includes prioritising symptoms that matter to women the most, such as vaginal dryness, discomfort, irritation and pain during sex.

If symptoms bother you

Symptoms such as dryness, irritation, or pain during sex can usually be effectively managed. Lubricants may reduce pain during sex. Vaginal moisturisers may reduce dryness. Both are available over-the-counter at your local pharmacy.

While there are many small clinical trials of individual products, these studies lack the power to demonstrate if they are really effective in improving vaginal symptoms.

In contrast, there is robust evidence that vaginal oestrogen is effective in treating vaginal dryness and reducing pain during sex. It also reduces your chance of recurrent urinary tract infections. You can talk to your doctor about a prescription.

Vaginal oestrogen is usually inserted using an applicator, two to three times a week. Very little is absorbed into the blood stream, it is generally safe but longer-term trials are required to confirm safety in long-term use beyond a year.

Women with a history of breast cancer should see their oncologist to discuss using oestrogen as it may not be suitable for them.

Are there other treatments?

New treatments for vaginal dryness are under investigation. One avenue relates to our growing understanding of how the vaginal microbiome adapts and modifies around changes in circulating and local concentrations of hormones.

For example, a small number of reports show that combining vaginal probiotics with low-dose vaginal oestrogen can improve vaginal symptoms. But more evidence is needed before this is recommended.

Where to from here?

The normal ageing process, as well as menopause, both affect the vagina as we age.

Most women do not have troublesome vaginal symptoms during and after menopause, but for some, these may cause discomfort or distress.

While hormonal treatments such as vaginal oestrogen are available, there is a pressing need for more non-hormonal treatments.

Dr Sianan Healy, from Women’s Health Victoria, contributed to this article.

Louie Ye, Clinical Fellow, Department of Obstetrics and Gynecology, The University of Melbourne and Martha Hickey, Professor of Obstetrics and Gynaecology, The University of Melbourne

This article is republished from The Conversation under a Creative Commons license. Read the original article.