Aging is not a linear process as many people think it is. While your chronological age may say a certain number, the way you live could cause you to be biologically older. Our chronological age is based on the number of years we have lived; however, our biological age could be higher or lower, based on how healthy our lifestyle choices are.

As we know, till a certain age, our body keeps growing and then comes to a halt. Studies like the 2013 study published in the Neuropsychiatric Disease and Treatment journal explain that our brain’s development is not complete until the age of 25, especially the prefrontal cortex. Like every living being, if we are developing, we will eventually deteriorate as well. However, at what age does this deterioration begin?

A groundbreaking study published in Nature Medicine found that a simple blood test can reliably estimate a person's age by analyzing the levels of hundreds of proteins. This "proteomic clock" offers a fascinating insight: biological aging isn't a smooth, linear process. Instead, it appears to accelerate in distinct phases.

Key Ages of Accelerated Aging

The study identified three significant periods when aging seems to speed up, on average: around ages 34, 60, and 78. Notably, the research suggests that the average person begins to show signs of physical deterioration as early as 34 years old. Based on these findings, "adulthood" was categorized as 34 to 60 years, "late maturity" from 60 to 78 years, and "old age" from 78 years onward.

To build this "proteomic clock," the scientists collected blood plasma (the liquid part of blood) from over 4,200 healthy people, ranging in age from 18 to 95. They used the information from more than half of these people to create their "clock." This clock was then able to correctly guess the age of the remaining people in the study. What's even more impressive is that they could make accurate age guesses using just 373 of the almost 3,000 proteins they first looked at. They even found that they could get a decent guess with as few as nine key proteins!

The study also showed that people whose blood proteins made them seem biologically younger than their actual age also did better on tests that measured how well their brain and body worked.

What This Means for Our Future

These findings have significant implications. This research suggests the potential for a blood test that could identify individuals who are biologically aging faster than their chronological age. Such individuals might be at a higher risk for age-related health issues like cardiovascular problems, Alzheimer's disease, and osteoarthritis earlier in life.

Furthermore, this research offers hope for developing interventions that could potentially slow down this "proteomic clock," keeping people biologically younger for longer. While it may sound like science fiction, the same research team has previously shown that it's possible to rejuvenate an older mouse by infusing it with blood from a younger mouse, hinting at future anti-aging treatments.

The discovery that the first burst of accelerated aging occurs in early mid-life, around age 34, is particularly intriguing, as it's well before the typical onset of noticeable aging signs and related health problems.

Children around the world lose an estimated 8.45 million days of healthy life each year due to second-hand smoke, according to research shared at the European Respiratory Society Congress in Amsterdam. The impact is especially severe for children from low-income communities, who are more likely to encounter smoke at home, in public areas, or in indoor spaces, even though they themselves do not smoke.

Second-Hand Smoke’s Toll on ChildrenRecent studies confirm that second-hand smoke (SHS, which is also known as passive smoking, is a major factor in childhood illness and mortality, contributing to both deaths and long-term disabilities. Research published in Respiratory Research (2025) highlights the global scale of the problem, telling which populations are most affected and the conditions that maintain or increase exposure. The findings suggest that the health burden may be even higher than previously estimated, emphasizing the need for stronger protections.

What the Data ShowsThe Global Burden of Diseases 2021 analysis reports that while age-standardized exposure to SHS has slightly declined since 1990, the absolute number of deaths and lost healthy life years has not fallen, largely due to population growth and aging. Around half of all children worldwide are still exposed to smoke, with the heaviest burden falling on regions with lower socio-economic development. Many low- and middle-income countries have yet to implement comprehensive smoke-free policies in indoor environments.

Passive Smoking Impact on Young Children

Second-hand smoke contributes significantly to respiratory illnesses. In 2019, roughly 6.94% of deaths from lower respiratory infections in children under five were linked to SHS exposure, with infants under one year at particular risk. The loss of healthy life years remains high, and trends show slow improvement in regions such as South Asia.

Beyond respiratory issues, SHS exposure is linked to stunted growth, ear infections, and long-term lung problems. According to WHO data, nearly 150 million children worldwide were stunted in 2022, and second-hand smoke, both during pregnancy and after birth, is a contributing factor. Studies also show that SHS can cause changes in DNA methylation, potentially altering gene expression and increasing susceptibility to future disease.

Challenges in Protecting Children

Homes remain the primary setting for exposure, even as public smoking bans expand. Social and economic factors—such as crowded living conditions, poor ventilation, lower awareness of risks, and weaker regulatory enforcement—further increase children’s vulnerability.

Precaution Steps That You Can Adopt

1. Create and enforce completely smoke-free indoor spaces, including homes and vehicles.
2. Increase awareness among caregivers and the public, emphasizing the dangers of indoor smoking.
3. Simple measures, like smoking outdoors away from doors and windows, can make a difference.
4. Pregnant women should avoid SHS entirely, as exposure in utero can lead to low birth weight and preterm births.
5. Health systems should track SHS exposure in children through routine check-ups and surveys.

Second-hand smoke is far from a minor concern. It remains a threat to child health, causing preventable illness, developmental setbacks, and death. Protecting children requires a combination of effective policies, public awareness, and everyday actions by parents, caregivers, and communities. Even small steps, like choosing smoke-free homes and outdoor smoking can significantly reduce risks.

A Listeria outbreak affecting certain recalled frozen meals sold at Trader Joe’s and Walmart has led to four deaths as well as 19 hospitalizations, according to the Centers for Disease Control and Prevention (CDC). The U.S. Centers for Disease Control and Prevention (CDC) has updated and expanded a food safety alert regarding possible Listeria contamination in several prepared pasta meal products. The extent of the outbreak is now known to have occurred in at least 15 states and has unfortunately resulted in multiple deaths. Here’s what you need to know.

Listeria Outbreak: What’s happened?

Listeria: What Products Are Included In The Outbreak?

Several pasta products have been linked to Listeria contamination, according to the CDC and USDA FSIS.

September 26 update:

• FreshRealm Beef Meatball Marinara Linguine Meals

September 25 update:

• Marketside Linguine with Beef Meatballs & Marinara Sauce
• Trader Joe’s Cajun Style Blackened Chicken Breast Fettuccine Alfredo

June 2025 notices:

• Marketside Grilled Chicken Alfredo with Fettuccine, White Meat Chicken, and Parmesan Cheese
• Marketside Grilled Chicken Alfredo with Fettuccine, White Meat Chicken, Broccoli, and Parmesan Cheese
• Home Chef Heat & Eat Chicken Fettuccine Alfredo with Grilled White Meat Chicken and Parmesan

Listeria Outbreak 2025: Where Were The Products Sold?

The recalled meals were sold at major retailers including Kroger, Walmart, and Trader Joe’s. Even if some of these products are no longer on sale, they may still be in refrigerators or freezers at home, so consumers are urged to check and discard them if necessary.

Where Is The Listeria Outbreak Located?

The CDC has confirmed cases in 15 states:

• California: 2
• Florida: 1
• Illinois: 1
• Indiana: 1
• Louisiana: 2
• Michigan: 2
• Minnesota: 1
• Missouri: 1
• Nevada: 1
• North Carolina: 1
• Ohio: 1
• South Carolina: 1
• Texas: 3
• Utah: 1
• Virginia: 1

Officials note that these are only the reported cases and the actual number of infections is likely higher than currently documented.

What is Listeria And What Are Its Symptoms?

Listeria is a bacterium that can cause serious illness. Each year, about 1,250 people in the US are infected, with around 172 deaths. Anyone can contract Listeria, but it is particularly dangerous for pregnant women, newborns, older adults, and people with weakened immune systems.

Symptoms vary depending on age, health, and whether the infection has spread beyond the intestines.

• Pregnant individuals: Fever and flu-like symptoms may signal an invasive infection.
• Others: Fever, muscle aches, headache, stiff neck, confusion, loss of balance, or seizures can occur if the illness spreads.

New covid strain symptoms: A new Covid strain is circulating in the UK, now accounting for a noticeable share of cases in England. Named Stratus, it has two variants, XFG and XFG.3. Experts have pointed out that one of its distinguishing features may be a hoarse voice, which is less common in earlier strains. By September 10, 2025, the UK Health Security Agency (UKHSA) reported a 7.6% increase in coronavirus cases across England compared to the previous week, though it’s not clear how many infections are linked specifically to XFG.

At the same time, the UK is facing a “tripledemic” which is a rise in Covid, flu, and RSV infections at the same time. This has left many people confused about whether their symptoms are caused by Covid or just a seasonal illness. Below, we explain how to spot the differences.

What Is the Tripledemic?

A tripledemic happens when cases of flu, Covid-19, and RSV rise sharply in the community. Dr. Armando Paez, chief of Infectious Disease at Baystate Health, explains that a tripledemic becomes concerning when infections reach a level that could overwhelm healthcare services.

While the idea of three viruses circulating at once may feel alarming, there are steps you can take to protect yourself, your family, and your community. Vaccinations, good hygiene, and staying home if you feel unwell are key precautions.

New Covid Strain: Stratus (XFG and XFG.3)

The World Health Organization classifies XFG as a “variant under monitoring”, with a low public health risk globally. Compared to other variants, XFG has shown higher growth rates, even surpassing the recently reported Nimbus NB.1.8.1 variant.

New Covid Strain Symptoms: Unique Symptoms of Stratus

While classic Covid symptoms in the UK included fever, cough, and loss of taste or smell, Stratus may appear differently. A notable sign of this variant is a hoarse or raspy voice. Other symptoms may include:

• Shortness of breath and chest tightness
• Sore or scratchy throat
• Headaches and body aches
• Digestive issues, nausea, or loss of appetite
• Brain fog or trouble concentrating
• Loss of taste or smell (less common than before)

How to Tell Covid from Flu or RSV

Symptoms of Covid can overlap with flu and RSV, including:

• Fever or high temperature
• Cough
• Fatigue
• Muscle or joint aches

What makes Stratus different is the hoarse voice, which could be an early clue that your illness is Covid rather than a typical cold or flu. Other signs to watch for include nasal congestion, sore throat, digestive issues, and overall tiredness. RSV, while often mild, can occasionally lead to more serious complications like pneumonia or bronchiolitis.

What You Should Do

As flu, Covid, and RSV spread together this season, health experts urge everyone to stay up to date with vaccines. Dr. Jamie Lopez Bernal of the UKHSA advises getting your winter vaccines early to reduce risk before infections increase further.

If you develop symptoms, monitor your health closely and see a doctor if your condition worsens or persists. Taking precautions now can help protect you and those around you during the ongoing tripledemic.