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.

The US Food and Drug Administration (FDA) is considering easing restrictions on certain peptides, potentially allowing specialty pharmacies to produce injections not approved for medical use, raising safety concerns.

The Department of Health and Human Services (HHS) has submitted an interim access policy for peptides to the White House for review, according to a government website posting on Thursday. The proposal was sent to the Office of Management and Budget, the Associated Press reported.

The list of peptides includes BPC-157, an unapproved peptide promoted online for pain relief, healing and performance enhancement, has gained popularity among wellness influencers and followers of Health Secretary Robert F. Kennedy Jr.'s Make America Healthy Again (MAHA) movement. A recent study found that its use increased 33-fold between 2020 and 2026.

What Is The FDA Planning?

Also read: RFK Jr-Backed ‘Wolverine’ Peptide Use Surges: Why Are People Taking An Unapproved Drug For Injury Recovery?

The proposal could allow compounding pharmacies to produce certain peptides, including BPC-157, according to AP, citing two people familiar with the matter

The policy would reportedly give pharmacies greater assurance that they would not face enforcement action for producing these substances.

Formally permitting peptides for compounding would require federal rulemaking, a process that could take years. It remains unclear whether the administration intends to pursue that route.

In July, an FDA advisory committee recommended allowing six of seven peptides under review to be used by compounding pharmacies for patients with prescriptions. The recommendation went against FDA staff concerns that there was insufficient evidence to establish their safety and effectiveness.

The proposal has drawn support from some peptide sellers. Telehealth companies Hims & Hers and Noom have also announced plans to offer peptides if federal restrictions are eased. Wall Street analysts estimate the market could be worth $2 billion to $3 billion.

What Are Peptides?

Peptides are short chains of amino acids that play various roles in the body, including regulating hormones and processes involved in growth, metabolism and healing. Some peptide-based medicines are approved for conditions such as diabetes and obesity.

However, other peptides promoted online have not been adequately studied or approved as medicines.

BPC-157 is often combined with TB-500, a peptide derived from thymosin beta-4, in a combination marketed as the “Wolverine stack.” It is promoted online for tissue repair and recovery from muscle, tendon and other injuries. BPC-157 is not approved by the FDA for medical use.

Read More: 4 in 10 US High School Students Report Binge Eating: What Are the Risks?

What Are The Safety Concerns?

The FDA has raised concerns about limited human safety data, potential immune reactions and impurities in BPC-157 products. It has also cited risks associated with certain compounded peptides, including contamination, allergic reactions and tumor growth.

The agency's adverse-event database includes reports of injection-site reactions, shortness of breath and skin or gum pigmentation changes among people who used BPC-157. However, these reports do not establish that the peptide caused the events.

Compounded medicines can meet specific patient needs, but they are not FDA-approved. The agency does not verify their safety, effectiveness and quality through the same premarket approval process used for approved drugs.

Allowing pharmacies to compound certain peptides would not mean the substances had received FDA approval or that their safety and effectiveness had been established.

Nearly 4 in 10 US high school students reported binge eating at least once in the previous 30 days in 2025, according to a new survey by the US Centers for Disease Control and Prevention (CDC).

The biennial Youth Risk Behavior Survey found that 40.5% of students reported binge eating on at least one day, while 17.2% reported it on three or more days. Frequent binge eating was more common among female students (18.6%) than male students (15.9%).

Binge Eating Linked to Poor Mental Health

The survey was conducted among 10,710 students in grades 9–12. However, valid responses to the binge-eating question were available for 6,898 students.

Students reporting poor mental health were more likely to report binge eating on three or more days in the previous 30 days than those who did not report poor mental health (27.2% versus 14%).

The prevalence was also higher among students reporting persistent sadness or hopelessness (25.4% versus 12.8%) and those who had seriously considered attempting suicide (27.1% versus 15.3%).

Previous research has linked binge eating with depression, anxiety, suicidal ideation and suicide attempts. However, the CDC noted that its cross-sectional findings cannot establish cause and effect or determine which condition came first.

“It was extremely alarming seeing how high those numbers were,” Ariel Beccia, a researcher in the adolescent and children’s medicine division at Boston Children’s Hospital, told STAT News.

“Eating disorders not only affect everyone, they also affect marginalized youth more, actually,” Beccia said.

Frequent Social Media Use Also Linked to Binge Eating

Students who used social media at least hourly were more likely to report binge eating on three or more days than those who used it once a day or less (22.8% versus 12.9%).

Exposure to appearance- and diet-related content, comparisons with others and idealized body standards have been proposed as possible pathways linking social media use to body dissatisfaction and binge eating. However, the survey measured how frequently students used social media, not the content they viewed, and cannot establish that social media use causes binge eating.

Differences Across Student Groups

Frequent binge eating was reported by 20.5% of Hispanic students and 18.7% of Black students, compared with 14.6% of White students. The prevalence was 19.6% among multiracial students and 9.9% among Middle Eastern or North African students.

The CDC cautioned that the estimate for Middle Eastern or North African students was imprecise because of the small sample size. These figures refer to binge eating on three or more days in the previous 30 days.

The findings highlight the need for continued monitoring of disordered eating among adolescents, along with prevention, early identification and access to appropriate support. The CDC said schools, families, health care providers and mental health professionals could play a role in these efforts.

What Is Binge Eating?

Binge eating involves consuming an unusually large amount of food in a short period while feeling a loss of control over eating. It is a form of disordered eating, but it does not necessarily meet the criteria for a diagnosis of binge-eating disorder.

Signs and symptoms of binge-eating disorder may include:

• Eating until uncomfortably full
• Eating more quickly than usual
• Eating despite not feeling hungry
• Turning to food during stress or emotional distress
• Eating alone out of embarrassment
• Experiencing guilt, shame or a sense of losing control over eating

How Is Binge Eating Treated?

Treatment may include psychotherapy (talk therapy), such as cognitive behavioral therapy (CBT) and interpersonal psychotherapy (IPT). Depending on individual needs, treatment may also involve medication and nutritional counseling.

The UK’s Medicines and Healthcare products Regulatory Agency (MHRA) has introduced new measures to improve how the risks of suicidal thoughts and behaviors and persistent sexual dysfunction are communicated to people taking antidepressants.

Following a review involving patients and their families, the MHRA will introduce a boxed warning in patient information leaflets (PILs), a patient safety card, and an additional safety leaflet. The term “post-SSRI sexual dysfunction” (PSSD) will also be added to the leaflets for certain antidepressants.

“Patients need clear and accessible information about the benefits and risks of medicines so they can make informed decisions,” Dr. Alison Cave, MHRA chief safety officer, said.

She said the changes would support informed discussions among patients, caregivers, and healthcare professionals. Dr. Cave added that antidepressants can effectively treat depression when used appropriately and under clinical supervision. Patients should not stop taking these medicines without first consulting their healthcare professional.

What Are the New Antidepressant Warnings?

Also read: GLP-1 Drugs May Offer Mental Health Benefits, Reduce Schizophrenia Relapses: Lancet Study

Patient information leaflets will feature a boxed warning directing readers to information about suicidal thoughts and behaviors, making the guidance easier to find.

A patient safety card is expected to accompany medicine packaging, reinforcing key safety messages and explaining when and how to seek support.

For certain antidepressants, updated leaflets will include information on PSSD, highlighting the possibility that sexual dysfunction may persist after treatment ends.

The MHRA is also developing an additional safety leaflet with the wider healthcare system. Expected in 2027, it will explain the benefits and risks of antidepressant treatment to support informed decisions. It will be given to patients at their first appointment discussing antidepressants and to those already receiving treatment.

Concerns Over SSRI Safety Warnings

The MHRA has received four prevention of future deaths reports since 2020 concerning antidepressant prescribing and safety information. One followed the 2024 death by suicide of Thomas Kingston, husband of Lady Gabriella Kingston, at age 45.

An inquest heard that Kingston had been prescribed sertraline and later switched to citalopram after reporting that his medication was not helping. Both are selective serotonin reuptake inhibitors (SSRIs). He had also received the sleeping tablet zopiclone for sleep difficulties and had stopped taking his medication before his death.

Gloucestershire senior coroner Katy Skerrett questioned whether patients were adequately informed about the suicide risks associated with SSRIs. Kingston’s parents called for clearer communication of potential side effects to patients and their families.

Read More: AI Chatbots May Be Changing How Children Seek Emotional Support

What Should Healthcare Professionals Do?

The MHRA advises healthcare professionals to:

• Discuss the risk of suicidal thoughts and behaviors when starting antidepressants, changing doses, and during subsequent reviews.
• Explain that some antidepressants can cause sexual dysfunction that may continue after treatment stops.
• Follow relevant National Institute for Health and Care Excellence (NICE) guidance and monitor patients regularly after treatment begins.
• Provide the additional safety leaflet when it becomes available in 2027.
• Report suspected adverse reactions through the MHRA’s Yellow Card scheme.

What Should Patients Taking Antidepressants Know?

Patients experiencing new or worsening suicidal thoughts should seek urgent medical attention, particularly when starting treatment or changing their dose. In the UK, they can contact NHS 111, their local mental health crisis team, Samaritans on 116 123, or the SHOUT text service at 85258.

Anyone concerned about sexual dysfunction during or after antidepressant treatment should contact their healthcare professional.

The MHRA said these are not new risks associated with the medicines. Patients should read the information supplied with their medication and consult their healthcare professional before stopping treatment.