Imagine if pain management didn't need a pill, injection, or surgery—just a simple mind trick. It may sound like a magic trick, but new studies indicate that our brain can be tricked into alleviating pain through a remarkable psychological phenomenon.
A recent paper in the journal Pain Reports documents a strange but powerful method for reducing pain—by an illusion called the Rubber Hand Illusion (RHI). This pioneering research may unlock the door to non-drug therapy for chronic pain, presenting a choice for the millions of victims.
This study shows how strong the brain is in forming our experience of pain. By using the mind's capacity to be deceived through illusions, we can potentially be on the threshold of a new age in pain relief—one that has no need for drugs but rather uses the brain's own neuroplasticity.
The Rubber Hand Illusion is a well-known psychological test that deceives the brain into thinking that an artificial hand belongs to the body. In earlier research, subjects were seated with one hand concealed behind a screen and a realistic rubber hand in front of them. When both the real and artificial hands were touched at the same time, most subjects reported feeling the sensations in the rubber hand as if it were their own.
Following this idea, researchers at Ruhr University Bochum in Germany examined whether the illusion would be able to impact pain perception. Rather than touch, they applied heat and light to examine how visual and sensory integration impacts pain perception.
The experiment included 34 subjects who were subjected to a rubber hand that was red-glowing while their concealed actual hand was provided with heat stimuli of varying warmth to the level of pain. The subjects then rated their pain on a scale with their other hand.
The control group received the rubber hand in an upside-down position, and this interfered with the body ownership illusion. The outcomes were dramatic: when participants saw the rubber hand in its appropriate position, they responded with significantly decreased pain levels—sometimes within a mere 1.5 seconds after the illusion had been induced. This pain reduction continued during the experiment, showing a clear connection between the illusion and pain regulation.
One of the most important insights that emerge from this research is that of visual analgesia—a situation where mere observation of a part of the body in pain will alleviate the discomfort. What this finding implies is that how we perceive our bodies visually has an important function to play in the alleviation of pain.
The findings suggest that when individuals feel the rubber hand is their own, their brain recalibrates its reaction to pain accordingly, said lead researcher Martin Diers. Although the precise neural mechanisms involved in this process are not yet understood, the research paves the way for further investigation into how the brain combines visual and sensory information.
With the ever-present opioid crisis and growing fears over the side effects of pain medication, finding alternative pain relief options is more important than ever. Chronic pain harms millions globally and common painkillers often involve risks like addiction, tolerance build-up, and adverse side effects.
The Rubber Hand Illusion provides a fascinating, non-surgical means to potentially treat pain without medication. As this study is in its infancy, however, there is potential for implications. Healthcare professionals might include illusion-based treatment in pain therapies if further research establishes these findings. Patients suffering from arthritis, fibromyalgia, or neuropathic pain could benefit.
Though the Rubber Hand Illusion is not yet a widely accepted treatment, its success implies that other mind-body interventions like it have the potential to transform pain therapy. Future research can look into means of amplifying the illusion's analgesic effect, potentially with virtual reality (VR) or augmented reality (AR) platforms.
For example, VR technology might transport the user into a world where he or she "sees" the hurt limb healing or senses lower levels of pain through deception. These technologies might make feasible, home-based therapies for the chronically ailing.
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Undergarments play a very important role in protecting our health. They not only promote hygiene, but they also reduce the chances of chaffing, infections and keep the sensitive areas dry and prevent any unwanted odor. Most women own several pairs of bras, an undergarment used to support breasts, for different occasions. Sports bras are one such variety that women wear when they are doing active work. These bras are different than a daily wear bra as they are more durable and meant to restrict movement to ensure there are no injuries due to sudden movements.
However, a new study suggests that this restrictive movement may be causing women back pain. The research published in the European Journal of Sport Science suggested that these bras, designed to really hold everything in place, might unintentionally put extra pressure on your spine while you're active.
To understand how a bra affected breast movement, researchers observed a woman doing activities like running, to see how it affected her breasts, back and spine movement. To understand the difference of movement in each bra, they ran the same test with no bra, a regular day wear bra and a sports bra. By tracking these movements, the researchers were able to see how each type of bra affected her body's mechanics during the activity. This detailed monitoring helped them understand the potential impact of different levels of breast support on other parts of the body, like the spine.
Sports bras are specifically designed to limit how much your breasts move around when you're exercising. This is important because excessive bouncing can be uncomfortable and even cause pain, especially if you have larger breasts. Over time, repeated bouncing without proper support can also strain the skin and ligaments in the chest area. Because of these issues, the focus of many sports' bra designs, especially the newer ones, has been on achieving the highest possible level of breast motion control to maximize comfort and support during physical activity.
The researchers pointed out that when your breasts naturally bounce while you're doing activities like running or spinning, the soft tissues around your chest actually help to absorb some of the force that would otherwise go to your joints and spine. However, a sports bra that's too tight and completely stops this natural bounce might prevent this force absorption. As a result, that pressure could then be transferred back to your spine, potentially causing your back muscles to work harder to compensate, which could eventually lead to pain or discomfort in the back
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It is natural for breasts to have movement when one is working out, while too much movement may hurt, allowing some movement can actually be good. This movement allows the surrounding tissues to play a role in shock absorption, protecting the spine and other joints from some of the impact. When a sports bra is so restrictive that it eliminates all bounce, it might disrupt this natural mechanism. This could mean that the forces generated during exercise, which would normally be partially absorbed by the breasts and their supporting tissues, are instead directly transmitted to the back, potentially increasing the load and stress on the spinal structures and muscles.
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Used as an umbrella term, dementia is a condition that affects your memory, thinking as well as one's daily activities. While it is concerning to forget things every now and then, dementia essentially chips away at a person’s identity, changing the way they think and behave. Affecting nearly 57 million people worldwide (World Health Organization) in 2021, dementia can occur due to diseases and any sort of injury to the brain. It is the 7th leading cause of death globally and 60-70% of these cases are Alzheimer's disease.
According to the Cleveland Clinic, dementia is caused by damage to your brain, it affects your brain’s nerve cells which blocks the brain’s ability to communicate properly with other parts of your body. They also explained that while dementia cannot be prevented, lifestyle choices can reduce or increase its risk.
Simple and accessible methods, like incorporating exercise into our lives, are seen as very important for helping people maintain a good quality of life as they get older and for reducing the impact of this condition on individuals and their families. While we already know that regular exercise can help keep our brains healthy and lower the chances of getting dementia, new research is pointing towards a specific type of exercise: weight training.
According to a new study published in the GeroScience journal, doing exercises to build muscle might also help protect the brains of older individuals from developing dementia.
To understand this potential link better, researchers conducted a study with older adults who had already been diagnosed with mild cognitive impairment, which are early signs of potential future dementia. They divided these participants into two groups. One group participated in a weight training program that gradually increased in difficulty and intensity, happening twice a week. The other group, acting as a comparison, did not engage in any structured exercise during the study period. This setup allowed the researchers to directly compare the effects of weight training versus no exercise on the brain health of these individuals.
One of the most hopeful findings of the study was that some of the individuals in the weight training group no longer met the criteria for having mild cognitive impairment by the time the study concluded. This suggests that weight training might have the potential to actually change the course of early cognitive decline.
Researchers believe this happens through several ways: by reducing harmful swelling in the brain, by improving how the body uses sugar which can affect brain health, by increasing helpful substances in the brain that support the growth and survival of brain cells, and by improving blood flow to the brain, which is essential for it to function properly.
Looking ahead, researchers are planning to delve deeper into the specific biological processes at a molecular level that explain how weight training has these protective effects on the brain. They also aim to identify specific markers in the body that could help us understand who might benefit most from this type of exercise and what the ideal exercise routines might look like for different individuals.
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Laughing gas or nitrous oxide is making headlines not for its role in dental clinics or surgical procedures, but as a potential treatment for depression. Once only considered a part of short-term anaesthetics used to relieve pain or anxiety during surgical procedures, like childbirth, nitrous oxide is now gaining attention in the world of mental health research for its potential to alleviate symptoms of depression, especially in people who have not responded to traditional treatments.
Several studies in recent years have shown that even a low dose of laughing gas can provide rapid relief from depressive symptoms. Unlike conventional antidepressants, which can take weeks to show results, nitrous oxide has demonstrated an almost immediate impact in some patients. Scientists believe this fast-acting effect could be a game-changer in managing treatment-resistant depression.
Laughing gas is thought to work differently from traditional antidepressants, which usually act on serotonin and other neurotransmitters. Nitrous oxide instead affects the NMDA receptors in the brain, which are involved in mood regulation and cognitive functions. This is similar to how ketamine—another fast-acting antidepressant—works. However, nitrous oxide has the added advantage of being less intense and more manageable in terms of side effects.
Patients who received nitrous oxide in the study experienced a noticeable reduction in their depression scores, even when given low concentrations of the gas. Researchers found that a 25% concentration of nitrous oxide was nearly as effective as the 50% dose but caused fewer side effects, such as nausea or dissociation.
One of the reasons nitrous oxide is being seriously explored as a depression treatment is its accessibility and long-standing safety profile. It has been used in medical settings for over 150 years, primarily for pain relief. Its safety, low cost, and ease of administration make it an appealing option for rapid intervention in psychiatric emergencies, particularly for those at risk of suicide.
Still, experts caution that laughing gas is not a magic bullet. While it shows promise, more research is needed to understand its long-term effects and how often it can be safely administered without causing dependency or neurological issues. It also needs to be administered under medical supervision. Mental health professionals are optimistic, though. With increasing cases of depression worldwide and many patients not responding to current treatments, the medical community is on the lookout for new and effective therapies. Laughing gas may not be the ultimate cure, but it represents a promising step forward.
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