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.

What happens when antibiotics stop working? We are so used to consuming antibiotics for everything that slowly our bodies are rejecting this. The sole reason is that bacteria have become smart. And experts believe that if this continues, it could slip the world back into an era where even a minor infection would be dangerous.

Antibiotics are used to treat almost all infections. However, with the sudden outbreaks, the misuse and overuse of it is slowly leading to antibiotic resistance or antimicrobial resistance (AMR). As per the World Health Organization (WHO), AMR occurs when bacteria, viruses, fungi, and parasites no longer respond to antimicrobial medicines.

What could Happen When Antibiotics Stop Working?

As experts warn, infections we currently consider minor could soon turn life-threatening. A routine urine infection, a scraped knee, or a mild chest infection, problems that usually resolve within days, may refuse to heal in the future. Bacteria evolve rapidly, and when exposed to unnecessary or incomplete antibiotic courses, they adapt and learn to survive. That’s when even our strongest medicines begin to fail.

Antibiotics do far more than treat common illnesses; they quietly support some of the most advanced medical procedures.

“Joint replacements, heart surgeries, organ transplants all rely on antibiotics to prevent dangerous infections. Chemotherapy patients, whose immunity is low, survive because antibiotics protect them from everyday microbes. Remove this safety net, and suddenly these sophisticated treatments become far riskier, even impossible,” explained Dr. Sunil Havannavar Senior Consultant - Internal Medicine, Manipal Hospital Sarjapur to IndiaTV.

How Does Antimicrobial Resistance Spread?

Antibiotic resistance doesn’t arrive with a bang. It builds slowly, every time antibiotics are misused—taken for viral infections, stopped halfway through, used without prescription, or demanded unnecessarily for fevers. Each misuse gives bacteria an opportunity to evolve. Doctors are already seeing cases where high-power, last-resort antibiotics are needed for infections that should have been easily treatable.

In fact, a new global study in The Lancet’s eClinicalMedicine has drawn serious concern about the sharp rise of antimicrobial resistance (AMR) in India, placing the country at the centre of what many specialists now consider a fast-moving superbug crisis. The research, titled Preprocedural screening for multidrug-resistant organisms in endoscopic retrograde cholangiopancreatography: an international, multicentre, cross-sectional observational study, shows that Indian patients had the highest worldwide rates of multidrug-resistant organisms (MDROs) among those undergoing a common endoscopic procedure.

A superbug is a strain of bacteria that no longer responds to one or more groups of antibiotics that previously worked well. This can happen through enzyme production such as carbapenemases, changes in drug targets, increased pumping out of drugs or shifts in the cell wall that block antibiotics from entering, as per National Institute of Health. When bacteria gain resistance to several antibiotic classes, the list of possible treatments becomes very small. Such resistance makes infections tougher to manage because routine medicines no longer work, leading to more severe illness.

What We Can Still Do to Stop This Future

The situation is serious, but not irreversible. We can slow the rise of resistance if everyone plays their part.

• Doctors can prescribe antibiotics only when necessary.
• Patients can avoid demanding them for every fever or throat ache.
• Everyone must finish the full antibiotic course when prescribed.
• Hospitals can strengthen hygiene and infection control.
• Farmers can limit antibiotic use in livestock.
• Scientists can continue developing new medicines and vaccines.

Magnesium and melatonin are both popular supplements, especially among people looking to get more shuteye, but can combining them improve your sleep? Some research indicates that taking magnesium and melatonin together could improve sleep quality, though stronger, larger studies are needed to confirm the effect.

Can We Combine Magnesium and Melatonin To Support Sleep?

Studies on using magnesium and melatonin together are limited, but some evidence suggests it could benefit sleep in certain individuals.

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As per Health, one study focusing on women with polycystic ovary syndrome found that taking both magnesium and melatonin improved sleep quality. Another study reported that people with sleep difficulties who used a combined magnesium-melatonin supplement for four weeks noticed modest improvements in how well they slept.

The exact reason why the two work together is not completely understood, but magnesium and melatonin may influence each other in a way that supports sleep.

“Magnesium does have an effect on melatonin levels,” said Marie van der Merwe, PhD, coordinator of the applied physiology and nutrition doctoral program at the University of Memphis, speaking to Health. “The amount of magnesium you have can influence how well your body produces melatonin.”

You don’t necessarily need to take the two supplements at the same time to benefit, van der Merwe noted. It’s fine to take magnesium in the morning and melatonin before bed.

The takeaway: There could be a link between magnesium and better sleep, but more research is needed to be sure.

Magnesium And Sleep

Magnesium is a vital mineral that supports nerve and muscle function, regulates blood pressure and blood sugar, and contributes to the formation of bone, protein, and DNA. As per Mayo Clinic, it is also commonly taken to help with sleep, but it is not without risks.

Benefits of Magnesium for Sleep

Some studies suggest magnesium may help sleep by:

Improving sleep quality: Ensuring adequate magnesium through diet or supplements may help people with deficiencies sleep better and ease anxiety.

Reducing muscle tension: Magnesium can help relax muscles and relieve tension, which can make it easier to fall asleep.

Risks of Magnesium for Sleep

Research on magnesium for sleep is limited. Supplements aren’t regulated by the FDA for safety or effectiveness and carry potential risks:

Delayed effect: It may take several weeks before magnesium supplements noticeably improve sleep.5

Side effects: High doses can cause diarrhea, nausea, and stomach cramps.7

Drug interactions: Magnesium can interfere with some medications, reducing their effect or increasing side effects. Talk to a doctor before starting any new supplement.7

Melatonin And Sleep

Melatonin is a well-known sleep aid, though it’s actually a hormone your body naturally produces to regulate sleep-wake cycles.⁸ “Melatonin is in charge of running the [internal] clock, and it really is important for regulating your circadian rhythms,” van der Merwe said.

Benefits of Melatonin for Sleep

Works quickly when needed: Unlike magnesium, melatonin can act soon after taking it, making it useful for occasional sleepless nights.

May help you fall asleep faster: Studies show that a 2-milligram dose of melatonin helped some people fall asleep about nine minutes sooner than placebo.

Supports sleep timing: Melatonin can help shift workers, travelers with jet lag, or those with irregular sleep schedules align their sleep patterns.

Risks Of Melatonin For Sleep

Melatonin can help with some sleep difficulties but won’t fix all sleep disorders, van der Merwe said. Like magnesium, melatonin isn’t FDA-regulated:

Long-term effects unclear: There’s limited data on the safety of long-term melatonin use.

Medication interactions: Melatonin may interact with antibiotics, antidepressants, and birth control.

Caution for certain groups: It’s generally not recommended for children or people with dementia, and should be used carefully by those with seizures or on blood thinners.

What to Consider Before Taking Magnesium and Melatonin Together?

It’s wise to speak with a healthcare professional before starting any new supplements, alone or in combination.

Van der Merwe emphasized that sleep problems can stem from issues that supplements alone won’t fix. Conditions like cardiovascular disease, type 2 diabetes, and depression can affect sleep.

If you want to try one or both supplements, a doctor can help determine the best timing for magnesium, melatonin, or a combined product.

“Melatonin [should] increase at night,” van der Merwe explained, so it is crucial to take it at the right time. Taking it in the morning can disrupt your internal clock.

Even though sleep-support supplements like magnesium and melatonin have grown in popularity, it’s important to consult a professional to see if they will help in your situation.

Chronic obstructive pulmonary disease (COPD) has long been seen as a condition of older adults, typically tied to years of smoking. But across India, pulmonologists are increasingly diagnosing it in people in their 20s and 30s. This shift, experts say, reflects a deeper and more troubling change: young adults are growing up and living in environments where the lungs never truly get a chance to breathe clean air.

A Shift From “Smoker’s Disease” to “Exposure Disease”

The biggest change is the cause itself. As Dr. Raja Dhar, Director & HOD, Pulmonology, CK Birla Hospitals, CMRI Kolkata, explains, “COPD is increasingly becoming an ‘exposure disease’ rather than a ‘smoker’s disease.’ In India, non-smoking COPD is numerically a much larger problem.”

This exposure begins early—sometimes in childhood.

Dr. Dhar highlights how even limited exposure can have lifelong consequences: “Severe airway obstruction can be traced back to just six to seven years of biomass smoke exposure in a poorly ventilated kitchen during a child’s formative years.”

Dr. Harshil Alwani, Consultant – Pulmonology, CK Birla Hospitals, Jaipur, also points to the changing risk profile. According to him, “newer epidemiological data show that non-smoking drivers—especially air pollution and occupational exposures—are playing a disproportionately large role in younger people.” He adds that rapid urbanisation means more young adults are chronically breathing polluted air from childhood onwards.

Improved diagnosis and greater awareness also mean younger patients with persistent symptoms are now being evaluated more often, he notes.

Beyond Smoking: The Real Culprits Behind Early COPD

Air Pollution

Both experts agree that polluted air is the biggest trigger today. Dr. Alwani explains that long-term exposure to PM₂.₅ is directly linked to lung decline and COPD. “Recent research shows that temperature and humidity modulate the harmful effect of PM₂.₅, making COPD risk worse under certain climatic conditions,” he says.

Dr. Dhar adds that India’s air quality is deteriorating nationwide: “Ambient outdoor air pollution is a severe risk, as air quality across 98% of India is worse than WHO standards.”

Indoor Pollution

Household pollution remains a massive issue. Biomass fuel used for cooking is, as Dr. Dhar puts it, “the largest non-smoking contributor, resulting in numbers approximately three times that of smoking-related COPD.”

Occupational Hazards

Young adults working in construction, mining, welding, or factory settings face daily exposure to dust, fumes, and chemicals. Dr. Alwani notes that such environments “carry a significantly increased risk.”

Childhood Lung Infections

Recurrent infections can impair lung development and reduce lung reserve, making early-onset disease more likely.

Genetic Factors

Conditions like alpha-1 antitrypsin deficiency, though rare, still contribute when combined with environmental triggers.

Delhi’s Winter Pollution: A Direct Route to Lung Damage

Every winter, Delhi’s smog becomes a health emergency. According to Dr. Dhar, “High winter pollution, particularly hazardous levels of PM2.5, acts as a chronic, low-grade chemical burn on the young respiratory system.”

Dr. Alwani adds that winter inversion traps pollutants closer to the ground, amplifying PM₂.₅’s damage.

The Vaping Problem

Vaping and e-cigarettes, widely perceived as harmless, have added a new layer of risk. Dr. Alwani warns, “Vaping is not benign. Its aerosols contain volatile compounds, heavy metals, and ultrafine particles that trigger inflammation and oxidative stress—central pathways to COPD.”

Dr. Dhar echoes this concern: “Any inhalation of heated chemical aerosols is a significant lung irritant and pro-inflammatory agent.”

Symptoms Young Adults Should Never Ignore

Doctors urge young adults not to dismiss symptoms like:

• Persistent cough
• Breathlessness during routine activity
• Wheezing or chest tightness
• Frequent colds or bronchitis
• Fatigue or reduced stamina

Why Early Diagnosis Matters

Early spirometry can dramatically change outcomes. As Dr. Dhar puts it, “Early intervention allows us to remove the source of exposure and start therapy, which can effectively preserve the patient’s remaining lung function.”

Dr. Alwani adds that catching the disease early can “significantly slow further lung damage” and prevent long-term complications.