Credits: Health and me
Demodex mites are tiny, eight-legged invertebrates that live on the human face, specifically in and around hair follicles. They are just 0.15 to 0.4 millimeters in size, invisible to the naked eye but numbering dozens or even hundreds at times — as many as five per square centimeter of skin. That may sound creepy, but almost every adult human carries these mites. They exist mainly on sebum (your natural skin oil) and dead skin cells, performing a pretty harmless, even cleaning function in normal circumstances.
Consider them micro custodians: they suck up the skin flakes and extra oils that collect during the day. But when their numbers get out of hand, which typically happens due to poor hygiene or compromised immunity, their presence becomes a problem.
Demodex mites are active at night. They come out of your pores when the sun sets, excelling in the lack of UV light — which is toxic to their DNA. As you sleep, they dine, crawl, and mate on your skin's surface. What's even more interesting (and somewhat alarming) is that they're fueled by melatonin, a hormone your body makes to assist in sleeping.
For their services to clean our pores, we unwittingly provide them with melatonin as fuel — a strange, symbiotic relationship that only shows up if something goes amiss.
While harmless in small quantities, Demodex mites can lead to skin problems if they overpopulate — a condition known as demodicosis. In the opinion of Dr. Richard Locksley, a professor of medicine at the University of California, San Francisco, such overpopulation can lead to a variety of skin and eye conditions, including:
Immunocompromised people are especially vulnerable. When your immune system can't keep mite numbers in check, allergy and infection can follow. Ironically, your own sleeping habits — or lack thereof — can determine their level of activity. Lack of sleep boosts oil secretion, which provides mites with even more to munch on.
Letting makeup, grime, sunscreen, and impurities sit on your skin overnight can provide an all-you-can-eat buffet for Demodex mites. Left behind, these layers seal excess oil and dead skin cells — prime breeding ground for mites.
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This is particularly troublesome in the area around the eyes. Eyelash follicles tend to be a breeding ground for mite overgrowth, particularly when mascara, eyeliner, or false lashes are not removed effectively. This results in irritation, plugged glands, and increased susceptibility to such conditions as blepharitis.
One of the most fascinating findings appears in a 2022 paper in Molecular Biology and Evolution, which indicates Demodex mites are becoming permanent residents of the human body — literally. Scientists discovered that the mites are losing unnecessary genes as a result of their snug, predator-free existence on human faces.
Actually, their body structures are so sparse that single-cell muscles control each of their legs. They also have a reverse process of maturation — losing cells as they mature rather than adding them. Since such close biological incorporation, scientists believe that one day they will be able to integrate genetically with human hosts. It may sound like science fiction, but it's a possibility biologically.
For healthy individuals, there's no reason to panic. Demodex mites are not dangerous per se. In fact, they're so widespread they're actually thought of as part of the skin microbiome. But they can become an issue when individual hygiene is lax — especially before bedtime. Here's what you can do:
Your evening skincare routine isn't vanity, it's a defense system against an unseen, millennia-old species that lives on your face. Though Demodex mites are generally harmless housemates, bad hygiene and broken sleep habits can cause them to become freeloaders with no plans to leave.
(Credit-WHO, Science Museum Group Collection)
'Medical Memoir' is a Health & Me series that delves into some of the most intriguing medical histories and unveils how medical innovations have evolved over time. Here, we trace the early stages of all things health, whether a vaccine, a treatment, a pill, or a cure.
Maggie was diagnosed with Leukemia at the age of 2.5-year-old, fighting cancer at a young age, she survived after another two and half years of treatment, but it left her in a very vulnerable state. Her immune system took a big hit, even a common cold could be dangerous for her.
What followed was Maggie’s parents' great efforts to ensure their child gets the best childhood, while making sure she stays safe. But no matter how safe you are or how much you try to keep your loved ones safe, things do not go as planned. Despite their efforts, during a routine visit to her oncologist, Maggie's parents were contacted about a measles case that was known to be in the clinic at the same time Maggie was. Every rash, cold or cough after that seemed like their nightmare come true, however, Maggie was lucky this time because she wasn’t infected.
This is not just a story, but the reality of Dr. Tim Jack, who spoke to the Vaccinate Your Family initiative, urging people not just to vaccinate to take care of their children, but also to ensure the safety of everyone around them. But what significance does this story have for our health? What do we need to be aware of measles?
A household name among diseases, measles, is considered to be one of the world’s most contagious diseases. Causing the deaths of millions, the disease impacts the respiratory tract and then slowly spreads throughout the body. Vaccination was the reason why we were able to control the disease in the 1960s, before which the estimated death each year was said to be 2.6 million death each year, according to the World Health Organization (WHO).
Places that had never seen the measles virus before were hit very hard. Outbreaks caused a lot of sickness and death in isolated communities, like the Faroe Islands in 1846, Hawai'i in 1848, Fiji in 1875, and Rotuma in 1911.
Before vaccines, measles was always present around the world, causing epidemics. In richer countries, better healthcare and nutrition meant fewer people died from measles by the 20th century. While antibiotics couldn't fight the virus itself, they could help with complications like bacterial pneumonia. Still, common problems like ear infections, croup, diarrhea, and pneumonia led to thousands of hospital stays each year. A more serious complication, encephalitis (swelling of the brain), could cause brain damage, loss of hearing or sight, or even death.
Globally, the death rates remained very high, with about 30 million cases and over 2 million deaths every year.
In 1954, a measles outbreak at a boarding school near Boston gave doctors a chance to try and find the measles virus. They took samples from sick students. A doctor named Thomas Peebles successfully grew the virus from a sample taken from an 11-year-old boy named David Edmonston. This success allowed doctors to create the very first vaccine against measles.
John Franklin Enders, who was Peebles's boss and is often called "the father of modern vaccines," developed the measles vaccine from a specific strain of the virus called 'Edmonston-B', named after David. This strain is still used today as the basis for most measles vaccines.
Enders and his team tested the vaccine on small groups of children from 1958 to 1960. After that, they started larger trials with thousands of children in New York City and Nigeria. In 1961, the vaccine was declared 100% effective, and the first measles vaccine was approved for public use in 1963.
Starting in the 1960s, individual countries began large-scale vaccination programs against measles. The first international measles vaccination efforts began in Africa in 1966. The World Health Organization (WHO) worked with governments in over 20 newly independent African countries, along with other organizations, to give vaccinations. Their goal was to control measles and also get rid of smallpox.
Despite challenges, like keeping the heat-sensitive vaccine cold during transport and storage, these campaigns showed that vaccination worked against measles. By May 1967, The Gambia became the first country where the measles virus stopped spreading.
In 1968, Dr. Maurice Hilleman, a key figure in vaccine development, created an improved measles vaccine. He weakened the virus by passing it through chick embryo cells 40 times. This resulted in a vaccine that caused fewer severe side effects. This weaker version, known as the Edmonston-Enders strain, led to some of the strains still used in measles vaccines today.
In 1971, Hilleman combined the recently developed vaccines for measles, mumps, and rubella into a single shot called the MMR vaccine. In 2005, the chickenpox (varicella) vaccine was added to create the MMRV vaccine. Standalone measles vaccines are still available in many countries.
In 1974, measles was one of the first diseases targeted by the WHO when they started a program to expand vaccination efforts globally. Widespread childhood vaccination has dramatically reduced measles cases worldwide. WHO now suggests vaccinating babies at 9 months in areas where measles is common, and at 12–15 months in other areas. A second dose is recommended for all children, which is very important because about 15% of children don't get full protection from just one dose.
Because measles spreads so easily, a very high percentage of people need to be immune (at least 95%) to prevent large outbreaks. If vaccination rates drop too low, outbreaks can happen again when the disease is brought back into a community.
Besides the suffering measles causes, controlling outbreaks is expensive and takes resources away from other healthcare services. Measles deaths still occur in many countries, especially where vaccination programs have gaps. For example, in the Democratic Republic of the Congo, 7,800 people died from measles during an outbreak between 2018 and 2020, compared to 2,299 deaths from Ebola in the same period.
The Americas region was declared free of endemic measles in 2016—the first WHO region to achieve this. However, this status was lost two years later due to a measles outbreak. This outbreak started because of a crisis in one country that led to gaps in vaccination and slow response. The virus then spread to neighboring countries, where it was eventually controlled.
To address these issues, the Pan American Health Organization (PAHO) has been training countries on how to quickly respond to prevent measles and rubella from spreading, improving disease tracking, and launching new, high-quality follow-up vaccination campaigns.
Between 2000 and 2023, measles vaccination prevented over 60 million deaths worldwide. However, despite having a safe and affordable vaccine, global measles deaths continued to rise before the COVID-19 pandemic. In 2019, there were over 207,000 measles deaths globally, which was the highest number of reported cases in 23 years.
According to Harvard Health as of July 2025, there have been 1,288 confirmed measles cases across 38 states in the US, primarily among children. This is the highest number of cases since 2000, the year measles was declared eliminated in the country.
This rise in cases is mainly because fewer people are getting vaccinated. Across the country, measles vaccination rates for school kids dropped from 95% in 2019 to 92% in 2023. In some areas where outbreaks are happening, like parts of west Texas, the vaccination rate is as low as 82%. This leaves many people unprotected. A big reason for the current cases is that 96% of recent infections were in people who weren't vaccinated or hadn't completed their shots.
As the history shows, measles outbreaks can be stopped. The MMR vaccine (Measles, Mumps, Rubella) is very effective, with two doses providing 97% protection, and it's very safe. Side effects are usually mild, like a sore arm or low fever. The false idea that vaccines cause autism has been proven wrong, but this misinformation has made some people hesitant to get vaccinated.
As a responsible citizen, one must ensure they keep in touch with healthcare professionals and keep the safety of their loved ones as well as everybody else around them.
Credits: Canva
COVID-19 cases are once again rising across the U.S., with nearly half the country reporting increasing infections. California, Florida, and Texas are among the hardest-hit states, signaling a “summer wave” backed by wastewater surveillance data and CDC reports.
While the virus was originally associated with winter peaks, health experts now observe a biannual pattern—resurgences during both summer and winter months. This evolving trend is being attributed to multiple factors, including waning immunity, the emergence of new variants, and behavioral patterns unique to warmer months.
Summer spikes aren’t just a coincidence. The current surge is primarily being driven by:
Experts explain that during hot months, people seek comfort indoors in air-conditioned environments where poor ventilation raises the risk of airborne transmission. Add to that the travel and celebrations typical of summer, and it creates the perfect breeding ground for viral spread.
The most dominant strain at present is NB.1.8.1. First detected in March 2025, it’s known for causing a razor-like sore throat and spreading rapidly across 24–25 states. Though it’s not linked with more severe illness, its ability to bypass immunity has made it a major concern for public health officials.
Other variants like XFG and LP.8.1, all Omicron descendants, have also shown up in wastewater, signaling widespread, albeit less severe, transmission.
Fortunately, hospitalizations and deaths are still significantly lower than in previous pandemic waves. However, emergency room visits are increasing among young children, and those over 65, immunocompromised, or living with chronic conditions remain vulnerable.
Also worth noting: long COVID continues to affect people even after mild infections, with lingering symptoms such as fatigue, brain fog, and shortness of breath.
Even as cases rise, there are ways to protect yourself and your community. Here’s what experts recommend:
Mental health is a big cause of concern for people; however, not many consider how it also affects young kids and teens. The National Alliance on Mental Health stats show that about 50 % of all mental health conditions begin by the age of 14 and 75% by age 24. What’s surprising is that one out of six kids have anxiety or depression, however only half of them get help.
Despite growing concerns about the mental health of young people in the U.S., a new survey reveals that most public schools are not screening students for psychological problems. According to a survey report published in the Jama Network Open, show that there is a big barrier that schools must bridge in terms of mental health help.
A survey asked over 1,000 public school principals about mental health screenings. The results showed that fewer than one-third, specifically just under 31%, of schools actually check students for mental health problems. This is happening years after the top health official in the U.S., the Surgeon General, announced that there was a mental health crisis among young people. This crisis was linked to things like social media, the COVID-19 pandemic, bullying, and other factors that led to more depression, anxiety, and thoughts of suicide among young Americans.
The survey also pointed out big problems schools face when it comes to mental health. About 40% of principals said it was hard to make sure students get the right help if they talk about feeling anxious or depressed. Researchers believe these difficulties come from several things, such as not having enough money or tools, not knowing enough about how to do mental health screenings, and worrying that checking students would mean too much extra work for school staff. Even though not many schools are screening for mental health, some are offering help to students. The survey found these important points:
The study also looked at what makes a school more likely to screen students for mental health. It found that schools with 450 or more students were more likely to screen. Also, schools where most of the students were from racial or ethnic minority groups were 33% more likely to conduct mental health screenings.
Experts suggest that if there were policies to give more money from the government (both federal and state) for mental health in schools, and if schools had more mental health staff, it could lead to more screenings. This would also make it more likely that students would get the treatment they need.
According to the NAMI finding mental health conditions early and getting effective treatment can make a huge difference for children and their families. It's crucial that we make it possible for all schools to offer better access to these important services. Policies should also focus on making it easier to provide mental health support in schools, addressing issues like problems with getting paid for services, making effective treatments available to more students, and ensuring fair access for everyone.
Schools have a very important role to play in helping children and young people get help sooner. School staff—and even students themselves—can learn how to spot the warning signs of a developing mental health condition and how to connect someone to care.
By offering school-based mental health services (with professionals in schools) and school-linked mental health services (connecting to community resources), schools can lower the barriers that keep young people and families from getting the treatment and support they need. This is especially important for communities of color and other groups who are often underserved.
When we invest in children's mental health to ensure they receive the right care at the right time, we improve the lives of children, young people, families, and our entire communities.
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