Winter is here, which means the season of sickness too is here. While viruses and sickness run throughout, winter is when the chilly weather further makes it worse for those prone to sickness. Especially, if they are kids, as their immunity is not fully developed.

Does that mean it is inevitable for kids to be sick?

Anytime a child is exposed to another child, they will fall sick. This is because germs are transferred in the air or by touch, and children, being curious, always touch things, including their own faces, mouths and easily pick up germs and spread them. While prevention is impossible, there are steps that can be taken to reduce this.

Experts and medical professionals recommend to follow the vaccine schedule by the Centers for Disease Control (CDC) and American Academy of Pediatrics (AAP). Vaccines have be proven to protect people, children, and infants from serious and deadly infections.

While sicknesses like a common cold do not have a vaccine, good hygiene can help prevent the spread of germs. Teaching your kids to wash hands after touching toys, or any other surface and other people is a great way to start it.

Exposure to germs at an early age strengthens child's immune system

Is there really any truth in the statement? When we encounter infections, our immune system creates antibodies that either prevent future infections or help the body fight them off more effectively, often leading to milder illness. The "hygiene hypothesis" proposes that living in an overly clean environment might hinder the immune system's development, potentially increasing the risk of allergic conditions like asthma.

ALSO READ: Why Forward-Facing Car Seat Could Be Lethal For Your Baby?

Although research has explored this idea, many immunologists (experts in the immune system) have raised concerns and expressed disagreement with the hypothesis.

In reality, most children don’t grow up in sterile environments. They are naturally exposed to a variety of germs, providing ample opportunities for their immune systems to strengthen and adapt.

Sanitizing Child's Toys

It is a good practice to regularly disinfect your children's toys and anything they share with others or take to school.

It is important to know the difference between cleaning, sanitizing, and disinfecting. While cleaning removes visible dirt, sanitizing decreases the number of germs on the surface, whereas disinfecting kills germs.

Also make sure to read the labels correctly and prevent any toxic toys to make its way to your kids, so it cannot be inhaled or ingested.

How to disinfect toys?

You can start by cleaning all the toys that has come in contact with your child's hands and mouth with soap and water. Then, use a sanitizer to clean everyday items, things that remain in your child's environment. Then use disinfectant, especially if your child is sick or if someone sick has touched your child's toys.

If you are wondering which sanitizers to go for, the Environmental Protection Agency (EPA) website has come up with a list of approved sanitizers and disinfectants that are effective.

Tylenol is one of the most commonly used pain killers. That’s why a study on the drug’s long-term effect on reproductive health of unborn girl children is concerning.

Researchers in Denmark found that girls exposed to paracetamol, also known as acetaminophen or Tylenol in the US, during fetal development had smaller ovaries, fewer ovarian follicles and smaller uteruses in infancy compared to girls who were not exposed to the component.

It’s essential to understand that study does not show that girls exposed to the drug will certainly have fertility problems later in life.

The researchers say it is still too early to know whether the changes observed during infancy and adolescence will translate into reduced fertility or earlier menopause.

What Did The Study Find?

Published in Human Reproduction Open, the study involved 302 girls from the Copenhagen Analgesic Study, or COPANA.

The researchers tracked mothers' paracetamol use during pregnancy through repeated questionnaires and also measured the drug in urine samples.

The girls were examined at around three months of age, during a period known as minipuberty, when the reproductive hormone system becomes temporarily active.

Of the 302 girls, 92 had first been exposed to paracetamol before 17 weeks of pregnancy; 67 were first exposed from 17 weeks onward and 143 had no reported prenatal exposure.

The researchers found that girls exposed during early fetal development had an approximately 40% smaller ovarian volume and a 13% smaller uterine volume compared to girls who were not exposed.

Girls exposed during mid-to-late fetal development stage had about 23% fewer ovarian follicles. These follicles contain immature eggs that can potentially develop and mature over a woman's reproductive life.

Additionally, girls exposed exclusively during early pregnancy also had lower levels of anti-Müllerian hormone (AMH), a hormone produced by ovarian follicles that is commonly used as a marker of ovarian reserve.

Also read: Tylenol, Other Medications Linked To 400% Rise In Liver Injuries In US

Changes From Infancy To Adolescence

Researchers also examined an independent group of 1,210 girls who had been followed from infancy through adolescence.

In this group, prenatal paracetamol exposure was associated with a smaller uterus at puberty and smaller ovaries during adolescence.

Study leader Margit Bistrup Fischer of Rigshospitalet in Copenhagen stressed that the long-term implications remain unknown. Whether these early reproductive differences affect fertility or the timing of menopause will require long-term follow-up.

Also read: Lower Doses Of CBD Could Also Cause Liver Damage: FDA Study Finds

Tylenol And Infertility

This was an observational study, which means that researchers looked at an association between prenatal exposure to paracetamol and changes in future reproductive health.

They did not randomly assign pregnant women to take paracetamol, so the study cannot establish that the drug itself caused the changes.

The authors also say that external factors cannot be completely excluded. Women who took paracetamol because they must have been pain and discomfort due to headaches, fever or other illnesses. These underlying conditions could also influence fetal development.

Also, the women used relatively low to moderate amounts of paracetamol. According to COPANA cohort, the most common reasons were headaches or migraines, musculoskeletal pain, illness or cold and fever.

The study also found that increased reported paracetamol exposure, meaning high dose, was too associated with lower ovarian and uterine volumes.

Also read: Paracetamol Is Not Safe For Older People, Finds Study

Earlier Studies That Raised Similar Concerns About Tylenol

It's not the first time that Tylenol has sparked safety concerns. In 2025, new studies by Mount Sinai and Harvard T.H. Chan School of Public Health raised an concerning question: is prenatal exposure to acetaminophen associated with neurodevelopmental disorders including autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) in children?

A study led by Andrea Baccarelli, dean of Harvard T.H. Chan School of Public Health’s faculty of environmental health in BMC Environmental Health, systematically reviewed 46 previous studies encompassing data from more than 100,000 participants.

The aim was to investigate whether acetaminophen use during pregnancy correlates with neurodevelopmental disorders in children.

Applying the Navigation Guide Systematic Review method—a strict, gold-standard approach to assessing environmental health evidence—the study team evaluated the quality, risk of bias, and strength of evidence of all included research.

By doing so, it was possible to conduct a solid synthesis of available scientific literature, and what emerged was a pattern: better-quality studies showed a more pronounced association between prenatal acetaminophen exposure and offspring increased risk of ADHD and autism.

Another recent study observed that liver injuries reported to US poison centres increased by nearly 400% between 2000 and 2024, due to acetaminophen, sold under brand names like Tylenol.

The study also found that exposures involving acetaminophen-containing combination drugs decreased by 60%-85% after the US Food and Drug Administration capped the amount of acetaminophen allowed in combination prescription products.

However, harmful exposures to acetaminophen alone increased steadily over the 24 years. The findings suggest that regulatory action reduced liver injuries linked to combination products, while acetaminophen alone remained a leading contributor to poison-centre-reported liver injuries.

Are your kids completely safe inside the classroom? A new study has raised concerns about the air quality in classrooms, particularly the bacteria that could result in reduced lung function in children.

Recent research presented at the European Respiratory Society (ERS) Congress in Barcelona, Spain intended to ensure that schools have completely healthy environments for children, particularly their developing lungs.

Classrooms Have High Levels Of Two Harmful Bacteria Groups

The study was presented by Dr. Soutrik Banerjee from the Department of Environmental and Prevention Sciences, University of Ferrara, Italy, and French technology company, Alten S.A.

Researchers from the University of Ferrara in Italy and French technology company Alten analysed data from the SINPHONIE project, which examined indoor environmental conditions in multiple schools across Europe.

The analysis is based on nearly 300 classrooms across 22 European countries. Researchers measured the levels of Streptomyces and Mycobacterium in classroom dust and compared this with lung function in children using spirometry, a standard test to measure breathing and respiration health.

The researchers adjusted their analysis for several factors that could affect lung function, including children's age, sex, body mass index, exposure to second-hand smoke, pet allergens, socioeconomic factors, age of the school building, region and local outdoor air pollution.

They found that children in classrooms with higher levels of Streptomyces had a 0.08-litre lower forced vital capacity (FVC).

Also read: 6-Year-Old Australian Kid Dies From Rarely Seen ‘19th Century Disease’: Why Is Scurvy Still A Risk Today?

What Is Forced Vital Capacity?

Meanwhile, higher levels of Mycobacterium were associated with a 0.06-litre lower FEV₁ and a 0.13-litre-per-second lower peak expiratory flow (PEF). FEV₁ measures how much air can be exhaled in the first second of a forceful breath, while PEF measures the fastest rate at which air can be expelled.

Dr Banerjee told the Congress, “We know that indoor air quality in schools can be affected by pollutants, humidity, ventilation, temperature, dampness and biological agents like fungi and bacteria. However, much less is known about whether the types of bacteria growing in classroom dust are linked to children’s lung function.”

“We were particularly interested in two bacterial groups, Streptomyces and Mycobacterium spp., which are found in soil, dust and water systems. We wanted to see whether higher exposure to these bacteria in the classroom is associated with children’s lung health across Europe.”

Also read: US Newborns Are Missing A Crucial Vitamin K Shot Which Can Lead To Brain Bleeding

How Dangerous Are These Bacteria?

Both Streptomyces and Mycobacterium are present widespread in the environment. They are found in soil, dust and water systems. The study did not show that children developed a bacterial disease because of classroom exposure.

Instead, researchers are investigating whether exposure to the bacteria could influence the airways and thereby their lung function.

One possibility is that they could irritate the respiratory tract or activate immune and inflammatory pathways. Another is that the bacteria may simply be markers of other problems inside a classroom, like excess moisture, poor ventilation, inadequate cleaning or outdoor dust entering the building.

Dr Soutrik Banerjee, from the University of Ferrara, said: “The bacteria may either have a direct biological effect, or they may be indicators of other indoor environmental factors that influence lung function.”

A small reduction in a lung function measurement does not automatically mean that a child has lung disease. Lung function naturally varies between children according to age, height, sex and other factors. The differences reported in this study were modest for individual children, according to the researchers.

However, Banerjee said the findings could still matter at a population level because children are repeatedly exposed to school environments. “Children are exposed to school indoor environments every weekday, and a mild to moderate reduction in lung function today may be a precursor to preventable lung disease in later life,” he said.

How Can This Be Prevented?

The European Respiratory Society specifically cautioned against taking extreme measures like sterilising classrooms.

Professor Alexander Möller, Head of the ERS Paediatric Assembly and Professor of Paediatric Pulmonology at the University Children's Hospital Zurich, who was not involved in the study, said: “The practical message is not that schools should become sterile environments.”

But he pointed that adequate ventilation, control of dampness and mould, regular cleaning and proper building maintenance could help.

Nutrition during pregnancy becomes very important. However, once the baby is born, the mother’s diet quietly gets pushed to the back of everyone’s priority. That is a big mistake.

The first six weeks post-birth is an extremely important time for the health of both the woman and her infant according to the WHO; post-natal health care is underemphasized. Delivery poses a lot of stress on the woman. Loss of blood, hormonal changes, healing of the tissue, disturbed sleep pattern and breastfeeding all require more intake of nutrition.

When “I’ll Eat Later” Becomes a Health Issue

Mothers do not eat regularly due to their babies’ feeding pattern, tiredness, or lack of help in the household. Some mothers start eating less food, thinking they will lose their baby weight quickly. This will cause them to lack proteins, iron, calcium, vitamin D, iodine, vitamin B12, and other vitamins that will be necessary during their recovery.

Anemia needs to be considered specifically for Indian women. NFHS-5 found that 52.2% of pregnant women between 15 and 49 years of age in India had anemia. It is also not resolved after giving birth when mothers started labour with an insufficient amount of iron or lost blood during labour.

Also read: Lindsay Clancy Trial: What Postpartum Psychosis Really Looks Like, From A Survivor

Breastfeeding Changes Nutritional Needs

Breastfeeding imposes extra requirements for energy. As per the CDC of USA, well-nourished lactating mothers require about 330 to 400 kilocalories extra per day than what they consumed before pregnancy.

It is not “eating for two,” but eating more nutritiously. Proper meals should comprise of proteins, grains, vegetables, fruits, milk or its alternative sources, nuts, seeds, and enough water. Iron, calcium, and Vitamin D supplements, as prescribed, should also be taken.

Recovery Needs a Care Plan Too

The recovery from childbirth needs to be considered in terms of medical recovery and not something that mothers do if they want to. Families can contribute by making sure that the new mother is eating regularly, has healthy foods at hand and that there is shared care giving to give her some time to eat and rest.

Exhaustion, dizziness, breathlessness, weakness or lack of appetite should not be brushed off as "normal postpartum symptoms". Having a healthy baby does not give reason for the mother to be forgotten. The fourth trimester is where recovery starts, not the point when mothers' care ends.

By Dr. Himani Sharma, Clinical Head and Senior Consultant – Obstetrics and Gynaecology, Cocoon Hospital, Jaipur