Your body hosts trillions of bacteria, viruses, and fungi, collectively known as the microbiome. While some bacteria are linked to disease, many play essential roles in supporting your immune system, heart health, weight management, and overall well-being. This article delves into the significance of the gut microbiome and its impact on health.

What Is Gut Microbiome?

Interestingly, bacterial cells outnumber human cells in the body, with approximately 40 trillion bacterial cells compared to 30 trillion human cells. With up to 1,000 species of bacteria present in the gut, each plays a distinct role. While most bacteria contribute positively to health, some can be harmful. Together, these microbes weigh around 1–2 kilograms, functioning almost like an additional organ essential for overall well-being.

How Does Gut Microbiome Influence Your Health?

The relationship between humans and microbes has evolved over millions of years, with the gut microbiome playing a crucial role from birth. Initial exposure to microbes occurs during birth, and some evidence suggests that exposure begins in the womb. As the microbiome diversifies, it starts influencing key bodily functions:

Digestion of breast milk: Beneficial bacteria like Bifidobacteria help break down essential sugars in breast milk, supporting infant growth.

Fiber digestion: Some bacteria process fiber into short-chain fatty acids, which contribute to gut health and reduce risks of obesity, diabetes, and heart disease.

Immune system regulation: The gut microbiome interacts with immune cells, influencing how the body responds to infections.

Brain health: Emerging research suggests a link between the gut microbiome and brain function, potentially affecting mental health and neurological processes.

Gut Microbiome And Weight Management

An imbalance between beneficial and harmful microbes, known as gut dysbiosis, may contribute to weight gain. Studies on identical twins—one with obesity and the other without—suggest that microbiome composition plays a role in body weight independent of genetics. Additionally, animal studies indicate that gut bacteria can influence weight gain, even when calorie intake remains constant.

Probiotics, beneficial bacteria found in supplements and certain foods, can help restore gut balance and support weight loss, though their effects may be modest.

Gut Health And Disease Prevention

The gut microbiome plays a vital role in preventing and managing conditions like irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD). Imbalances in gut bacteria may lead to bloating, cramps, and digestive issues. On the other hand, beneficial bacteria like Bifidobacteria and Lactobacilli help strengthen the intestinal lining, reducing the risk of gut-related disorders.

Impact On Heart Health

Research suggests that the gut microbiome influences heart health by affecting cholesterol levels and blood pressure. Certain harmful bacteria produce trimethylamine N-oxide (TMAO), a compound linked to blocked arteries and heart disease. However, probiotics, particularly those containing Lactobacilli, may help reduce cholesterol levels and promote cardiovascular health.

Blood Sugar Regulation And Diabetes Risk

The gut microbiome also plays a role in regulating blood sugar levels. Research on infants genetically predisposed to type 1 diabetes indicates that gut microbiome diversity declines before disease onset. Furthermore, individual variations in gut bacteria may explain why people experience different blood sugar responses to the same foods.

Connection Between Gut And Brain

The gut is physically connected to the brain through nerves, and certain bacteria help produce neurotransmitters like serotonin, which influence mood and mental health. Studies indicate that people with mental health disorders often have different gut bacteria compared to those without such conditions. Additionally, some probiotics have shown promise in alleviating symptoms of depression and anxiety.

Tips For Healthier Gut Microbiome

Maintaining a balanced gut microbiome is crucial for overall health. Here are some strategies to support gut health:

• Eat a diverse range of foods: A varied diet rich in fiber, legumes, and fruits promotes microbial diversity.
• Consume fermented foods: Yogurt, kefir, and sauerkraut contain probiotics that enhance gut health.
• Limit artificial sweeteners: Some artificial sweeteners can encourage the growth of harmful bacteria.
• Include prebiotic foods: Bananas, oats, and asparagus contain fibers that nourish beneficial bacteria.
• Breastfeed infants when possible: Breastfeeding promotes a healthier gut microbiome in babies.
• Choose whole grains: Whole grains contain fiber and beneficial compounds that support digestive health.
• Opt for a plant-based diet: Vegetarian diets may reduce inflammation and support a healthier gut microbiome.
• Consume polyphenol-rich foods: Green tea, dark chocolate, and olive oil contain compounds that foster beneficial bacteria.
• Take probiotics if needed: Probiotic supplements can help restore gut balance after disruptions, such as antibiotic use.
• Use antibiotics cautiously: While antibiotics can be life-saving, overuse can harm beneficial gut bacteria.

Dementia is more common than you think. According to the Alzheimer’s Disease International, there were over 55 million people in the world living with dementia in 2020. According to the organization, this number is said to double every year for 20 years, and this number is said to reach 78 million in 2030.

There are many different types of dementia, one of which is Alzheimer’s disease. It is the most common form of dementia. While there is no cure for dementia, catching it early can help people manage the condition. But with the vague symptoms of Alzheimer’s, early diagnosis is difficult.

Researchers have found a possible new sign of Alzheimer's disease that could show up incredibly early, which is poor spatial navigation. Think of spatial navigation as your brain's ability to figure out where you are and how to get where you're going, your internal GPS.

This difficulty could appear up to 25 years before the more commonly known symptoms, like losing your memory. Finding a warning sign this early is a huge step because getting a diagnosis sooner is vital for beginning treatment and for scientists working to find ways to prevent the disease.

What Does Knowing Your Surrounding Mean?

A team of scientists from the University College London (UCL) conducted a study to look for these early signs. They worked with around 100 people between the ages of 43 and 66. These people were chosen because they had a higher risk of getting Alzheimer's later in life. This risk was due to things like having a family member with the disease, carrying a specific gene (called the APOE-ε4 allele) linked to higher risk, or having risk factors in their lifestyle.

An important point to note was that every single person in the study showed no signs of Alzheimer's, they were perfectly healthy and were about 25 years younger than the age doctors would typically expect dementia to start for them.

To test their navigation skills, the participants put on virtual reality (VR) headsets and were asked to find their way around a computer-generated environment. The results showed that the people who were at higher risk for Alzheimer's had a much harder time completing the VR navigation task. They essentially got lost or struggled more to find their way.

Early Sign Of Alzheimer’s Disease

Importantly, these same people did just fine on other types of tests, including those that check memory. This suggests that having trouble with spatial navigation could be one of the very first things to go wrong in the brain, years or even decades before you start forgetting things.

The experts said that this change might be the earliest possible signal that someone is starting to move from being healthy to showing the first signs of the disease. The researchers are now planning to turn this VR test into a tool that doctors could use to help diagnose the disease earlier.

explained that these findings are exciting for two main reasons. First, they allow doctors to spot the start of Alzheimer's much sooner, which is critical for making treatments work better. Second, the VR test is based on how special cells in the brain in an area called the temporal lobe handle space and location.

This means the test helps connect the dots between tiny changes in the brain's cells and the actual symptoms people experience. This connection is a huge barrier in current Alzheimer's research.

The study also noticed that men showed a bigger drop in their spatial navigation skills than women did. This suggests that more research is needed to understand why men and women might be affected differently by Alzheimer's.

The Alzheimer's Society agreed, emphasizing that early and accurate diagnosis is essential, and this study clearly shows that problems with navigation could be one of the very first signs to watch out for.

A video is making rounds on Instagram, where a Norwegian cardiologist is being quoted who says that cold morning showers could lead to brain stroke. The explanation is that majority of people who had brain strokes, took cold morning showers.

The post explained: "cold water causes instant vascular constriction in 2 seconds, and the blood pressure surges to 200/130. The heart races at 180 beats per minute, struggling to pump through narrowed arteries. Then the weakest brain vessels ruptures."

When this claim was contradicted by stating that most research mention that cold water is good for you, the "Cardiologist" explained: “Those studies tested healthy athletes at 4 p.m., when pressure is steady. Marketers then pushed the findings for all times, all conditions.”

However, the video did not actually feature a cardiologist, neither did mention any name or place of practicing of the cardiologist. All that was mentioned was 'Volkov' as the cardiologist. Furthermore, the post description that claimed studies have shown the correlation between cold waters and brain stroke did not cite any studies, thus the Health and Me team ran a fact check on the claim.

Here's What We Found

Similar claim was made by a UiTM Professor, who said that because the 'body takes time to adjust its temperature too quickly because we are warm-blooded' thus sudden cold water on head, suggesting the sequence of showering, could lead to a stroke.

However, this claim was also debunked by Thanh Phan, head of neuroscience research at Monash Health, who said that majority of stroke happens due to clot obstructing blood flow in brain. He said that it does not mention anything about showering sequence.

Again, in 2024, in an Instagram reel, shared by @vedantsir_, the claim was made that brain hemorrhages happen because of the way of bathing. This is because we put our head under the cold water immediately, as opposed to how our ancestors did, when they would take a bath in the river.

However, plenty scientific evidence suggest that cold baths can in fact, offer health benefits, including enhanced immune function, improved stress resilience, cardiovascular support, better insulin sensitivity, and positive effects on mental health.

While earlier studies and fact checks do point that the claim of cold shower causing brain strokes, Dr Sahil Kohli, Associate Director, Neurology, Neurosciences at Max Hospital Gurugram in a video says that cold shower could in fact cause peripheral vasoconstrictions, and may increase stroke risk. This claim however, is opposite to what Dr Rahul Chawla, Neurologist at IBS Hospital, Delhi says.

Dr Chawla says, and as reported by Medical Dialogues, that there is no 'correct' way to bathe. "For instance, some people believe that stepping directly under a shower or pouring water straight onto the head causes a sudden temperature change that leads to stroke, paralysis, or brain hemorrhage. However, these claims are completely unfounded and have no scientific support."

Watch The Video Shared On Instagram Here:

Dr Sermed Mezher, a UK-based General Practitioner, best known for his educational medical content on social media shared a video on his Instagram of a seizure that could leave you dancing.

"Wakeful seizures like that are more common than you think," he says. "But how are they different to the dancing plague?"

He explains that dancing plague happened around 1518, when a woman named Frau Toffer started dancing uncontrollable on the streets and then eventually hundreds also joined her. They danced for days, and some of them actually died of exhaustion. There are multiple theories to it, including ergot poisoning. However, he says, "We need to remember that this population was riddled with starvation and diseases. They had seen multiple outbreaks of the black plague, so the most likely diagnoses is stress-induced mass hysteria or a type of stress-induced psychosis."

However, he notes that the video he is referring to is different. "What this person in the first video was experiencing were temporary abnormal movements while conscious, that might be classed as a non-epileptic seizure."

What Is A Non-Epileptic Seizure?

It is also known as functional seizures, which are episodes that look and feel like seizures caused by epilepsy However, they are not caused by abnormal electrical activity in your brain, but are a physical reaction of your nervous system to:

• Physical triggers like injury or pain
• Stressors in your environment
• Past traumatic event

While the dramatic dancing may seem like you are "faking" it, but the seizures are real and the person who is experiencing do not have any voluntary control over these episodes.

What A Non-Epileptic Seizure May Look Like?

The common symptoms of non epileptic seizure are:

• Loss of consciousness
• Seizures over 10 minutes long
• Retained awareness
• Out of phase limb movements
• Pelvic thrusting
• Changing patterns of movement
• Rapid side to side head movements
• Eyes closed unresponsiveness

This can also affect your emotional state, including your anxiety, depression and even your panic attacks.

What Might Cause Non Epileptic Seizure?

These are caused by a mix of stress that affects your body, mind, and relationships. This is known as the biopsychosocial model.

Other things that may contribute include:

• Difficulty understanding and expressing emotions
• Trouble processing information from your senses to turn it into movement
• Unhelpful response to stressors

Furthermore there could be underlying mental health conditions that could trigger these seizures. The conditions include:

• Mood disorder
• Personality disorder
• Post Traumatic Stress Disorder (PTSD)
• Anxiety disorders with panic attacks
• Depressive disorder
• Dissociative disorder
• Somatic symptom disorder
• Substance use disorder

People who undergo these seizures may be more at risk of experiencing physical, sexual or emotional abuse or neglect, especially in their early years. They may have lived through a difficult or traumatic event, and may have or develop a chronic condition like chronic pain or fibromyalgia.