Mysterious Fog in the US , Canada and UK: A dense, eerie fog with a "burning chemical-like smell" has spooked a good part of North America and parts of the United Kingdom and Canada. With social media amplifying all concerns, this phenomenon has sparked attention across all social media platforms. However, at the heart of this mysterious fog are a conjunction of natural events, social psychology, and environmental conditions that culminated in all the conspiracy theories and public health fears. Here's a closer look at the mysterious fog, its potential causes, and the societal response it has triggered.

Fog that Feeds Fear

The first reports of this "mysterious fog" came in from Florida where a resident said that they experienced respiratory symptoms, feverish warmth, and stomach cramps after contact with the fog. Similar stories started flooding social media, and within a day or two, a sinister force seemed to sweep across the United States, Canada, and parts of the UK. From Texas to Minnesota, people reported weird odors and health issues that they thought were linked to this bizarre atmospheric event.

Some witnesses were said to see "white particles" swirling through the air; theories ranged from a chemical attack or experimental weapon to drone-related chemical dispersals and references to historical military experiments, such as the infamous 1950s "Operation Sea-Spray."

Fuel to the fire were added when videos and posts, hundreds of thousands in number, began circulating on social media sites like TikTok and X (formerly Twitter) speculating on the origin of the fog. Hashtags like #ToxicFog went trending for days. Hysteria created a self-reinforcing loop in which every post spurred further scrutiny and fear.

Scientific Explanation of the Dense Mysterious Fog

1. What is Fog?

Fog is essentially a low-lying cloud formed when the air temperature cools to its dew point, causing water vapor to condense into tiny droplets or ice crystals. Several types of fog—advection fog, radiation fog, and valley fog—can form depending on conditions such as warm, moist air moving over cooler land or when temperatures plummet rapidly under clear skies.

2. Why the Chemical Smell?

Such chemical-like smell as reported during the occurrence of fog events is sometimes attributed to air pollution. It acts like a sponge, where it absorbs these pollutants, which include sulfur dioxide and nitrogen oxides, among others, that emit from industries. This mixture, therefore, leads to a stench that could be mistaken as unnatural or even toxic.

Also Read: Health Concerns Rise As US, Canada, and UK Come Under The Blanket Of Thick, Dense, Toxic Fog

3. What are the Health Concerns?

High moisture levels from fog can significantly exacerbate symptoms related to respiration, but especially in already predisposed asthmatics and allergy patients. The connection of these symptoms with actual fever, stomach cramps, and puffy eyes is too remote. Experts assume that the irritating effects of entrapped pollutants trapped in fog tend to affect more the eyes and throat rather than the rest of the body affected by some report.

Psychological Effects of Mass Panic Caused by Social Media

Social media amplified a natural weather event into a health epidemic. It made the personal experience of individuals become a cause for fear and speculation, a domino effect.

According to psychologists, this is a concept of selective perception, wherein once people's attention is drawn to environmental anomalies, they begin to notice them. This mirrors earlier panics, such as the Seattle windshield pitting panic of 1954. Then, atomic bomb testing caused fear in many and started to have people looking at their windshields for small marks that they had not seen before. Likewise, postings on the strangeness of the fog probably increased public awareness and suspicion, with people looking to attach unrelated symptoms to the phenomenon.

The fog hysteria shares a commonality with other instances of mass panic, such as the "drone sightings" of recent years or the Cold War-era fears of biological warfare.

Also Read: Mysterious Fog Is Making Americans Sick

These events underscore how fear can cloud judgment, especially when amplified by social media and sensationalist headlines. While historical cases, such as "Operation Sea-Spray," offer concrete evidence of the existence of unethical experiments, the jump from a natural weather condition to theories of chemical attacks exemplifies a more modern trend of connecting unrelated dots, all wonderfully seeded in distrust and anxiety.

Despite the swirling rumors, meteorologists and scientists are in agreement that the mysterious fog is not as alarming as it seems. It is well known that fog traps and amplifies pollutants, especially in urban and industrial regions. Moreover, winter months are the most conducive for fog formation, so its recent prevalence is unsurprising.

On the other hand, environmentalists advise that the fog should wake everyone up to increased levels of pollution. The reported odors and health irritations could be just symptoms of far deeper systemic issues like industrial emissions and lack of control over air quality.

The authorities must be transparent in their communication to combat misinformation and allay public fears. Governments and environmental agencies must provide timely updates on weather phenomena, air quality, and health risks. Initiatives like real-time pollutant tracking and public education campaigns can help demystify natural occurrences while addressing valid environmental concerns.

The mysterious Canada fog is a compelling case study in how environmental events intersect with psychology and societal dynamics. While rooted in natural phenomena, the fog became a vessel for collective fears, amplified by modern technology and historical anxieties.

In this information era where communication occurs at an almost lightning pace, the fog becomes a metaphor that reminds everyone about scientific literacy, environmental responsibility, and an effective balance when considering public concern. Whether perceived as a marvel of nature or as a tale that serves to teach, it left a very powerful mark in people's minds.

Meningitis cases in Kent has alerted many to take precautions. As per a BBC report, Mashaal Chugtai, 22, who studies laws in the University said that it feels like "Covid all over again". Amid this, a claim has been circulating that Prime Minister Sir Keir Starmer warned "the UK may need to go into lockdown as early as May if meningitis cases continue to escalate".

Some posts also include an additional quote, supposedly from Sir Keir, that says “I will do whatever it takes to keep the country safe over the election period, even if that means you can’t go outside”.

However, upon fact checking, it was found that Sir Keir made no such statement. Number 10 also confirmed to Full Fact that the Prime Minister did not make such claims and this appeared from a satirical Facebook page.

What Is Happening In The UK?

Meningitis outbreak in Kent University that infected a dozen of people have now further infected more people. The total number as of now is 27, as experts say that incubation period of the bacteria may lead to an increase in number of those who are sick.

The bug that causes the infection has been identified as the known strain of meningitis B and MenB vaccines will be offered to 5,000 students living in the University of Kent halls of residence in Cantebury. While several reports claim that parents are rushing to pharmacies to get their children vaccinated, due to which there is a shortage of the MenB vaccines, health secretary, Wes Streeting has denied any such claims. "There is actually plenty of stock of vaccine supply in the country," he said.

As per the UK Health Security Agency (UKHSA) official, people infected in Kent were the ones who visited a nightclub on 5,6 or 7 March. The officials, including NHS members and county council public health staff who have been tackling the outbreak believe that it has not been passed on to anyone outside the area. "All cases to date are linked to the current outbreak in Kent," said a UKHSA spokesperson, as reported by The Guardian.

Another official involved in the multi-agency response said, "We may have contained it. There are no cases popping up elsewhere that we know of – no cases that we know of outside the cluster – or not yet anyway. We are rolling out a vaccine and antibiotics and tracing contacts. So there’s nothing we’re not doing.”

Quickest-growing Meningitis Outbreak Ever

UKHSA chief executive Susan Hopkins said the outbreak "looks like a super-spreader" event with "ongoing spread" through universities' halls of residence. She added: "There will have been some parties particularly around this, so there will have been lots of social mixing. I can't yet say where the initial infection came from, how it's got into this cohort, and why it's created such an explosive amount of infections."

She further said that in her 35 years working in medicine, healthcare, and hospitals, "This is the most cases I've ever seen in a single weekend with this type of infection". She added: "It is the explosive nature that is unprecedented here - the number of cases in such a short space of time." She also remarked that this was the "quickest-growing outbreak" she has ever seen in her career.

What Is Meningitis?

Meningitis is a serious medical condition that affects the protective membranes covering the brain and spinal cord, the meninges. While fever is not always present, it is usually considered as one of the classic symptoms of meningitis. It is important to know the varied symptoms, causes, and treatments of meningitis for early diagnosis and proper management of the disease.

Meningitis is an infectious illness that brings about inflammation in the meninges. The most common cause of such inflammation is bacterial or viral infections, though other causes are also possible including fungal, parasitic, or non-infectious causes (autoimmune disease, head injury, or brain surgery). Meningitis may be caused by bacterial meningitis, which the Centers for Disease Control and Prevention (CDC) indicates can be so severe and bring about conditions like hearing loss, vision problems, and death if not received on time.

The end of patent on semaglutide, the active ingredient in popular weight loss drugs like Ozempic and Wegovy, in India has ushered in the way for cheaper generic -- up to 90 per cent lower than the original drug price.

HealthandMe spoke to various experts to understand whether the cheaper versions of semaglutide will spur better health for Indians, or whether the various side effects seen in Ozempic will also be translated to the low-priced drugs.

The patent for Novo Nordisk, the original maker of semaglutide, ended on March 20. On the same day, NATCO Pharma became the first to introduce Semanat and Semafull for INR 1,290 per month and INR 1,750 -- about 90 per cent cheaper than Ozempic, costing INR 8,800 per month. Eris Lifesciences also announced its plans to launch a multi-dose vial under the brand name Sundae at the same price.

Today, Dr. Reddy’s Laboratories, Sun Pharmaceutical Industries, and Glenmark Pharmaceuticals launched their generic versions of semaglutide.

Dr. Reddy’s Obeda is priced at Rs 4,200 per month, available in 2 mg and 4 mg strengths.

Sun Pharmaceutical Industries will sell under the brand names Noveltreat (doses ranging from INR 900) and Sematrinity (doses ranging from INR 750). Meanwhile, Glenmark’s GLIPIQ vials range from Rs 325 to Rs 440 per week.

Zydus Lifesciences has also announced the launch of its generic version of semaglutide injection under the brand names SEMAGLYNTM, MASHEMATM, and ALTERMET. The average monthly cost of the treatment will be about Rs 2,200, the company said in a statement.

Dr. V. Mohan, Chairman of Dr. Mohan's Diabetes Specialities Centre, Chennai, told HealthandMe called it a “very positive development” yet stressed the need to ensure “quality”.

According to a BBC report, around 50 branded semaglutide generics will enter the Indian market within months. How will this benefit Indians? Let's take a look.

Semaglutide works as a GLP-1 receptor agonist that mimics the GLP-1 hormone to regulate appetite and blood sugar. It slows gastric emptying and makes you feel fuller longer. It also signals the brain to reduce hunger and cravings, and triggers the pancreas to release insulin when blood sugar is high.

“For a country like India, which carries a large burden of Type 2 Diabetes and Obesity (and related complications), this could translate into meaningful clinical gains,” Dr. Anoop Misra, who heads Delhi’s Fortis-C-DOC Centre for Diabetes and Endocrinology, told HealthandMe.

India is facing an alarming diabetes epidemic, ranking second globally with an estimated 101 million people living with diabetes and another 136 million with prediabetes as of 2023, according to the ICMR-INDIAB study.

Similarly, the National Family Health Survey (NFHS) 2019–21 states that 24 percent of Indian women and 23 percent of Indian men are overweight or obese.

Also read: Ozempic Will Go Generic, Weight-loss Drug Cost Could Lower By 90%

Semaglutide: Risks Vs Benefits

In people with type 2 diabetes, Harvard Health noted that the body's cells are resistant to the effects of insulin and the body does not produce enough insulin, or both. This is when GLP-1 agonists stimulate the pancreas to release insulin and suppress the release of another hormone called glucagon.

These drugs also act in the brain to reduce hunger and act on the stomach to delay emptying, so you feel full for a longer time. These effects can lead to weight loss, which can be an important part of managing diabetes.

Notably, semaglutide is not just a glucose-lowering drug -- it improves weight and has proven cardiovascular, liver, and renal benefits.

Wider availability could therefore help reduce long-term complications such as heart disease and kidney failure. If used appropriately, this could indeed be a major step forward in total metabolic care, the experts said.

“The increasing affordability of GLP-1 receptor agonists is a double-edged development. On one hand, it significantly improves access for patients with obesity, type 2 diabetes, and high cardiovascular risk -- conditions that are highly prevalent in India. These drugs have demonstrated meaningful benefits in weight reduction, glycemic control, and even cardiovascular risk reduction, which could translate into long-term public health gains,” Dr Vivek Bindal, Senior Director & Head, Bariatric and Robotic Surgery, at Max Healthcare, told HealthandMe.

A recent study published in The Lancet Psychiatry journal showed that Ozempic can also help tackle the burden of depression, anxiety, and self-harm in high-risk diabetic patients.

However, the benefits are conditional -- it depends on appropriate prescribing, reliable product quality, and adequate patient monitoring, said Dr. Misra.

"These drugs should be strictly prescribed by qualified doctors and used only for therapeutic purposes, not for cosmetic weight loss,” Dr. Mohan said.

Urging for careful monitoring of side effects, the expert also called for more Indian data and strict pharmacovigilance.

“This also presents a great opportunity for India to make these drugs affordable and accessible to other developing countries across Asia and Africa,” the noted diabetologist said.

The experts also warned of “indiscriminate or unsupervised use” due to low cost.

This is particularly for cosmetic weight loss without proper medical evaluation, said Dr. Bindal.

“GLP-1 therapies are not ‘quick fixes’ -- they require careful patient selection, dose titration, and monitoring for side effects such as gastrointestinal intolerance or, rarely, pancreatitis,” he added.

However, the focus should remain on holistic obesity management, including lifestyle modification, rather than over-reliance on pharmacotherapy alone.

Also read: Semaglutide: Wegovy Can Spur Sudden Sight Loss By 5x; Men More At Risk, Finds Study

The major concerns around semaglutide include:

• Quality and manufacturing variability

Semaglutide is a complex peptide, unlike conventional small-molecule drugs. Variations in manufacturing, storage, or delivery devices may affect efficacy and safety.

• Cold-chain and storage issues

Maintaining 2-8°C across India’s diverse healthcare settings is challenging. Breaks in the cold chain could reduce drug effectiveness without being immediately apparent.

• Regulatory burden

With 40+ companies entering the market, ensuring uniform quality, batch consistency, and device reliability will stretch regulatory systems.

• Inadequate physician training

Many prescribers may lack experience with GLP-1 receptor agonists—particularly regarding dose titration, side-effect management, and patient selection.

• Pharmaceutical promotion vs. scientific education

• Indiscriminate or cosmetic use

There is a real risk of semaglutide being used for “quick weight loss” without proper medical supervision.

• Adverse effects and monitoring gaps

Gastrointestinal side effects, gallbladder disease, and rare pancreatitis require counselling and follow-up—often lacking in routine practice.

The greatest benefit will be seen in:

• Patients with Type 2 diabetes and overweight/obesity
• Individuals with poor glycemic control despite standard therapy
• Patients with high cardiovascular risk, or who have suffered heart attacks and strokes
• Those with metabolic syndrome or abdominal obesity
• Selected patients with chronic kidney disease
• People with obstructive sleep apnea (disordered breathing at night)
• People with severe fatty liver and consequent damage to the liver

"In these groups, semaglutide provides multidimensional benefit -- glucose lowering, weight reduction, and cardiometabolic protection," Dr. Misra said.

Who Should Avoid Semaglutide?

Semaglutide should be avoided or used with extreme caution in:

• Patients with a history of medullary thyroid carcinoma
• Individuals with a history of pancreatitis
• Those with severe gastrointestinal disease (e.g., gastroparesis)
• Pregnant or breastfeeding women
• Patients with Type 1 diabetes
• Patients with severe eye problems due to diabetes (can be taken with care)
• Individuals seeking purely cosmetic weight loss without a medical indication.

A whopping 41 million children between the ages of 5 and 19 are living with high body mass index (BMI) in India, according to a recently released report.

The World Obesity Atlas 2026 shows that India is now among the top three countries globally for the highest number of children affected by overweight.

Nearly 14 million children in the same group were also found to be obese, the report showed.

In children aged 10-19 years, more than 26.402 million were overweight or obese.

Between 2010 and 2025, India had a 4.8 percent increase in the prevalence of high BMI and obesity among children aged 5-19 years.

High BMI To Surge Chronic Disease By 2040 In India

By 2040, the report also projected a substantial increase in the risk of diseases among children aged 5-19 years due to a high BMI in India. This includes:

• Hypertension (high blood pressure) is expected to spike by 4.21 million from 2.99 million
• hyperglycemia (high blood sugar) to 1.91 million from 1.39 million
• high triglycerides (excess fats in the blood) to 6.07 million from 4.39 million
• metabolic dysfunction-associated steatotic liver disease (MASLD) to 11.88 million from 8.39 million

Childhood obesity in India is expected to surge to a whopping 56 million by 2040 -- nearly a 20 percent rise from 2025, according to the report released by the World Obesity Federation.

Of the 56 million, about 20 million children in the country will be obese, while the remaining 36 million will be overweight.

Globally, the number of children aged 5-19 years living with obesity or overweight is predicted to increase to 507 million by 2040 -- from 419 million in 2025.

Another report, Children in India 2025, raised the concerns of high triglyceride levels -- too much fat in the blood -- among children in India. Over one-third of Indian children aged 5–9 have high triglycerides.

High Triglycerides can increase the risk of heart disease, Type 2 Diabetes, fatty liver, and pancreatitis, especially when combined with obesity or unhealthy lifestyles.

How To Prevent

“Don't keep on buying junk food from outside. Second, get the child involved in activity, physical activity, sports, and games. Third, the family as a whole should commit to being healthy,” Dr. V Mohan, Chairperson of Dr. Mohan's Diabetes Specialities Centre, was quoted as saying to India Today.

He also urged to sleep on time, cut down on screen time, and not to watch toxic things on television.

"These three or four simple things if you do, childhood obesity can be reduced in India," the noted diabetologist said.

Amid rising levels of obesity in the country, Prime Minister Narendra Modi in January 2025 made a clarion call to fight obesity and reduce oil consumption. He called it a "hidden enemy" and a "silent crisis".

In response, the Central Board of Secondary Education (CBSE) oin May 2025 issued a directive to install "Sugar Boards" in schools.

Later in July, the Ministry of Health also asked for the installation of "sugar and oil boards" in government offices to help build a healthy India.

The boards consist of informative posters and digital boards highlighting the harmful impacts of the amount of sugar and oil present in popular food items. It also displays the effects of these foods on the human body as well as shares the recommended amounts of fat and sugar for individual intake.