When we catch a cold or flu, common symptoms like cough, fever, and loss of smell are often dismissed as ordinary. However, a recent study reveals that loss of smell—a symptom brought into sharp focus during the COVID-19 pandemic—could be an indicator of over 139 medical conditions, some far more serious than the flu.

A groundbreaking study by scientists from the UC Irvine Charlie Dunlop School of Biological Sciences in California has highlighted the link between persistent olfactory loss and inflammation, which is associated with numerous health conditions. Published in the journal Frontiers in Molecular Neuroscience, the study emphasizes that olfactory dysfunction could be an early warning sign for diseases ranging from COVID-19 to neurological and psychological disorders.

The Science Behind Olfactory Loss

Olfactory loss, or the inability to smell, is not just an inconvenience. According to the study, the phenomenon stems from inflammation that can signal various underlying health issues. Researchers found that olfactory dysfunction often precedes other symptoms in conditions like Parkinson’s disease, Alzheimer’s disease, depression, and even schizophrenia.

For example, Walker et al. (2021) noted that olfactory loss appears well before motor symptoms in Parkinson’s disease. Similarly, studies as far back as 1991 (Serby et al.) indicated that the first area of the brain to deteriorate in Alzheimer’s patients is the olfactory pathway. This early warning capability extends to other conditions such as major cardiac events, multiple sclerosis, and schizophrenia, where olfactory loss often precedes the onset of more recognizable symptoms.

Loss of smell - A predictor of mortality and cognitive decline

Perhaps even more concerning is the link between olfactory loss and overall health outcomes. The study connects persistent loss of smell to memory decline, cognitive impairment, and even all-cause mortality. For instance, a study from the University of Chicago found that a rapid decline in the sense of smell could serve as an early indicator of dementia.

Potential of scents

There’s hope, however. A 2023 study exploring “olfactory enrichment” found that exposing older adults to pleasant scents via an odorant diffuser significantly improved memory—by as much as 226%. Researchers believe that these scents may reduce inflammation, offering a potential mechanism for improving brain health.

“We now know that pleasant scents can decrease inflammation, potentially pointing to the mechanism by which such scents can improve brain health,” the researchers stated. This finding opens up exciting possibilities for using scent-based therapies to address a range of conditions linked to olfactory loss.

The implications of these findings are clear: persistent loss of smell should not be ignored. While it may stem from something as simple as a common cold or seasonal allergies, it could also be an early warning sign of a more serious condition. If you or someone you know experiences prolonged olfactory dysfunction, consulting a healthcare professional is crucial.

These studies pave the way for future research into scent-based therapies that could revolutionize how we treat neurological, psychological, and inflammatory conditions. Loss of smell is no longer just a minor inconvenience; it’s a potential gateway to understanding—and perhaps mitigating—a wide range of medical challenges.

There are many different aspects of beauty, whether it is skincare, haircare, makeup or any other beauty applications to achieve the kind of look you want. A lot of these routines are centered around our face; hence one must be careful not to hurt one's eyes, inhale some chemicals or even inject any product as they can cause harm to our health. For a few years now, many people have been opting for eyelash extensions or fake eyelashes to complete their beauty routine. These are done by professionals and while they do ensure safety, things can certainly go wrong, affecting your eyesight.

Dr Saurabh Sethi, a US-based doctor trained at Harvard University had warned us about a common beauty product: eyelash glue. He explained that some brands of eyelash glue may release a dangerous chemical that could have serious health consequences, including, in rare cases, blindness. While many people may be focused on the tools used, and how it can hurt your eye with one wrong move, the glue used can also be a big reason for hurting your eye health.

Chemical Culprit: Formaldehyde

In an Instagram video, the doctor explained that certain eyelash glues can release formaldehyde, a chemical also used to preserve bodies. He cautioned that while fake eyelashes are increasingly popular, the adhesive often contains this chemical. Formaldehyde can lead to allergic reactions, thinning, and even permanent loss of natural eyelashes. The doctor further stated that in very rare instances, it could even result in blindness. To reduce this risk, he advises either avoiding fake eyelashes or opting for formaldehyde-free adhesives.

Why is Formaldehyde in Eyelash Glue?

Experts explain that formaldehyde helps make lash glue last longer and stick better. However, even in small amounts, this chemical can trigger problems like shortness of breath, headaches, and skin irritation.

A 2022 study published by the American Contact Dermatitis Society found that a significant number of eyelash glues contained formaldehyde. Specifically, 75% of 20 professional products and four out of 17 consumer glues released the chemical. Surprisingly, only two of the consumer glues actually listed formaldehyde as an ingredient.

Cyanoacrylate Connection

According to a lash retailer, Lash Base, the main ingredient in all lash adhesives is cyanoacrylate, which is made from formaldehyde. They state that after cyanoacrylate is formed, the lash adhesive goes through a purification process to remove excess formaldehyde. This process purifies the glue, making it safe for use and leaving only trace amounts of the chemical behind.

Given these warnings, it's always wise to be cautious and consider the ingredients in your beauty products.

Fake Eyelash Safety Guidelines

The American Academy of Ophthalmology explains different nuances that could entail how safely your eyelashes are being installed. Here are some points you must keep in mind when getting eyelash extensions.

Why Infections Happen

Infections can pop up if the salon isn't super clean. Also, imagine sharp tools near your eye – if something slips, it could hurt you. So, hygiene and careful application are super important for your eye's safety.

Allergic Reactions to Glue

Some lash glues have chemicals like formaldehyde, which can cause an allergic reaction. This might make your eyes hurt, itch, turn red, or swell up. It's a big deal, especially since these glues aren't checked by federal agencies.

Other Potential Problems

Pulling or rubbing your extensions can actually damage your own lashes, sometimes for good. And very rarely, tiny fibers from the extensions might get stuck under your eye, which could even need surgery to fix.

How to Get Lash Extensions Safely

Want extensions the right way? Always check out the salon and the person doing your lashes. Ask about their experience and the glue's ingredients. It's always best to be prepared and ask lots of questions.

A new study has found that people hospitalized with Covid-19 who developed acute kidney injury (AKI) had better outcomes if they had received a Covid vaccine compared to those who were unvaccinated. The research offers fresh insight into how vaccines help beyond preventing severe respiratory symptoms—this time, by lowering long-term risks for kidney patients.

Understanding Acute Kidney Injury and Covid-19

Acute kidney injury is a common complication seen in people infected with the Covid-19 virus. Studies estimate that as many as 46 percent of hospitalized Covid patients may experience some form of AKI. While some cases are mild and reversible, others are serious enough to require dialysis and may lead to lasting kidney damage or even death. Despite being a known risk, the long-term outcomes of AKI in Covid patients haven’t been well studied—until now.

What the New Research Reveals

Conducted by a team from the University of California-Los Angeles (UCLA), the study examined nearly 3,500 patients hospitalized with Covid-19 between March 2020 and March 2022. Out of these, 972 individuals developed acute kidney injury. Among them, 411 were unvaccinated and 467 had received at least two doses of the Pfizer or Moderna mRNA vaccines, or one dose of the Johnson & Johnson vaccine.

Published in the peer-reviewed journal Kidney Medicine, the study found clear benefits of vaccination. Vaccinated patients were significantly more likely to survive, less likely to require ongoing dialysis, and faced fewer long-term risks compared to those who hadn’t been vaccinated.

Lower Need for Dialysis in Vaccinated Patients

One of the key findings was that vaccinated patients were less dependent on dialysis, especially a type used for critically ill individuals called continuous renal replacement therapy (CRRT). About 15.8 percent of unvaccinated patients needed CRRT, compared to just 10.9 percent of vaccinated patients.

This difference carried over even after discharge. Unvaccinated patients were found to be 2.56 times more likely to continue needing dialysis after leaving the hospital.

Survival Rates Significantly Better With Vaccination

The most alarming gap emerged in survival outcomes. The study found that unvaccinated patients had a 5.54 times higher risk of dying while in the hospital. Even more strikingly, they were 4.78 times more likely to die during long-term follow-up than those who had been vaccinated.

These statistics underline not only the short-term protection that Covid vaccines offer but also their role in reducing longer-term complications, especially in vulnerable patients with other serious conditions like AKI.

Experts Urge Vaccination to Reduce Complications

Commenting on the findings, researchers stressed the importance of vaccination as a protective measure against the worst outcomes of Covid-19. “The Covid vaccine is an important intervention that can decrease the chances of developing complications from the Covid-19 infection in patients hospitalised with acute kidney injuries,” said the lead researcher from UCLA.

They further advised that individuals should discuss vaccination with their healthcare providers, especially those at risk of kidney complications. Avoiding dialysis can drastically improve a person’s quality of life and reduce the risk of further medical issues.

If you think heart attacks only happen to your grandfather or someone well into retirement, think again. In recent years, cardiologists have seen a troubling trend—more young adults, even those in their 30s and 40s, are landing in emergency rooms with chest pain, elevated blood pressure, or worse. Once considered a disease of old age, heart problems are now showing up in the prime of life. So, what’s really going on? Sedentary lifestyles, rising stress levels, poor eating habits, and misinformation are silently chipping away at heart health long before most people expect it. The good news? With the right awareness and preventive care, you can lower your risk dramatically, starting now.

Your heart is more than just a symbol of emotion, it’s a tireless organ beating over 100,000 times a day to keep you alive. Yet most people don’t think about protecting their heart until they’re sitting in an emergency room. Increasingly, heart attacks are no longer reserved for the elderly. Men and women in their 40s and even 30s are now facing cardiac issues once considered rare at their age. So what can you do—right now—to prevent this?

Dr. Evan S. Levine, a leading cardiologist at Mount Sinai Health in Scarsdale, says the answer lies in consistent, preventive care. In a widely shared video that’s sparked thousands of views online, Dr. Levine breaks down 10 fundamental rules—rooted in science and decades of clinical experience—that can help you avoid a heart attack before 60. Here’s what he wants you to know.

Rule #1: Don’t Smoke—Ever

Dr. Levine is emphatic: “Never smoke, not even once.” Cigarettes constrict blood vessels, increase your heart rate and blood pressure, and double your risk of heart attacks. Even occasional smoking damages arteries and speeds up plaque buildup. And it’s not just cigarettes, cocaine use has an equally devastating impact on your heart’s ability to pump efficiently. Nicotine and drugs aren't just bad habits, they’re cardiovascular landmines.

Rule #2: Ditch Sugary Drinks

That daily soda may seem harmless, especially if you're active, but sugary drinks are directly linked to elevated blood pressure and triglycerides. Over time, this combination raises your heart disease risk significantly. According to Dr. Levine, eliminating sweetened beverages like soda, energy drinks, and sweetened coffees is a smart and simple step to better cardiovascular health.

Rule #3: Steer Clear of Fast Food

Your heart doesn’t need another burger-and-fries night. Fast food is typically high in saturated fats, trans fats, and sodium—all of which contribute to high blood pressure, elevated cholesterol, and weight gain. Over time, these factors compound, raising the risk of cardiovascular events. Cooking more meals at home or choosing whole, unprocessed foods can dramatically improve your heart profile.

Rule #4: Move Your Body for 30 Minutes Daily

One of the simplest yet most overlooked steps? Just move. Regular exercise—at least 30 minutes of moderate activity a day helps regulate blood pressure, maintain a healthy weight, improve cholesterol levels, and reduce stress. Whether it’s a brisk walk, a bike ride, or a dance class, the key is consistency. Your heart benefits every time your body moves.

Rule #5: Consider a Coronary Artery Calcium Scan

Dr. Levine advises those with risk factors—like high cholesterol, a family history of heart disease, or obesity—to get a coronary artery calcium (CAC) scan. This test evaluates plaque buildup in your arteries and helps determine your risk of future cardiac events, even if you’re under 40. It’s a preventive tool that can lead to early interventions and even save lives.

Rule #6: Address Stress Proactively

Chronic stress is no minor inconvenience—it’s a silent contributor to heart disease. Elevated cortisol levels increase inflammation, blood pressure, and even abdominal fat. Dr. Levine recommends managing stress through practices like meditation, listening to calming music, therapy, or simply taking regular breaks. Mental health is heart health.

Rule #7: Don’t Ignore Diabetes or Hypertension

If you’ve been diagnosed with diabetes or high blood pressure, managing these conditions aggressively is critical. Both are major contributors to atherosclerosis—a buildup of plaque that narrows arteries and leads to heart attacks. Monitoring blood sugar, taking medications as prescribed, and maintaining a heart-healthy diet can make all the difference.

Rule #8: Maintain a Healthy Weight Especially Around the Belly

Dr. Levine emphasizes the risks of central obesity—fat stored around the abdomen. This type of fat is closely linked to metabolic syndrome, which includes elevated triglycerides, fatty liver, hypertension, and insulin resistance. Together, they raise the risk for a fatal heart event. Losing just 5–10% of your body weight can drastically improve heart function and metabolic balance.

Rule #9: Beware of Medical Misinformation

In the age of TikTok doctors and Instagram wellness influencers, misinformation spreads faster than ever. “Avoid them like the plague,” warns Dr. Levine. Only trained medical professionals with verified credentials can provide safe, effective heart health advice. Look for board-certified cardiologists or specialists when seeking health-related guidance.

Rule #10: Limit Your Alcohol

Alcohol in excess has a direct effect on heart health it raises blood pressure, contributes to irregular heart rhythms, and can lead to heart failure. While a single glass of wine might be acceptable occasionally, Dr. Levine advises keeping consumption to a minimum. Moderation is not just wise—it’s protective.

Heart disease remains the leading cause of death globally, but many of its risk factors are preventable. From quitting smoking to managing weight and cutting sugar, the choices we make every day can drastically reduce our risk. Dr. Levine’s message is clear: take action early, be informed, and prioritize your heart health now not after a scare.