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Comment by Dr. Krishna Kumari Challa 5 hours ago

India’s DNA map uncovers millions of missing genetic variants A vast study reveals deep diversity, hidden disease risks and exposes the limits of Eurocentric medicine.

India’s DNA map reveals amazing diversity
India’s biggest gene-sequencing effort has shed new light on the diversity of the population, identifying nearly 130 million genetic variants, almost a third of which have not been reported previously. The GenomeIndia project analysed the whole genomes of almost 10,000 people, uncovering 44 million variants that weren’t already in global scientific databases. The study also revealed genetic risk factors in some populations, such as variants in genes that affect how the body processes certain drugs, variants linked to anaesthesia-related complications and extremely high levels of genetic homozygosity — when individuals inherit identical forms of a gene at a particular chromosome location from both parents. This can be a risk factor for recessive genetic diseases.

https://www.medrxiv.org/content/10.64898/2026.03.20.26348801v1

https://www.nature.com/articles/d44151-026-00082-0?utm_source=Live+...

Comment by Dr. Krishna Kumari Challa 5 hours ago

Are microbes the future of pollution clean-up?
Synthetic biologists are engineering bacteria to feast on oil, plastic and toxic chemicals

Microbes eat pollution — if we let them
A growing community of synthetic biologists are using biotechnology-led solutions — mostly microorganisms containing DNA tailored for a specific function — to tackle pollution ranging from microplastics and industrial waste to soils laced with heavy metals or explosive residues. But the field is held back by concerns around releasing genetically modified organisms into the environment, and the fact that current incentives make polluting profitable while cleaning up costs money.

https://www.nature.com/articles/d41586-026-01420-z?utm_source=Live+...

Comment by Dr. Krishna Kumari Challa 5 hours ago

Autoimmune gene provides viral protection

A variant of the gene PTPN22 linked to autoimmune diseases also appears to have a protective effect against viral infections. Researchers found that in mice, the presence of this variant kick-starts the activity of natural killer cells against a type of coronavirus. Removing natural killer cells from mice without the mutation had no effect on their ability to fight off the infection, which suggests these cells are not usually involved in the antiviral response. The findings could explain why this variant is relatively common in people, despite its link to diseases such as diabetes and lupus.

https://www.pnas.org/doi/10.1073/pnas.2519903123

Comment by Dr. Krishna Kumari Challa 5 hours ago

Prenatal exposure to chemical mixtures may influence fetal growth through the placenta

Prenatal exposure to mixtures of environmental chemicals, particularly low molecular weight phthalates, is associated with lower birthweight and altered fetoplacental blood flow, potentially mediated by imbalances in angiogenic biomarkers. Organophosphate mixtures correlated with higher foetal weight, possibly reflecting dietary factors. These findings indicate that chemical mixtures may influence foetal growth via placental mechanisms.

Bethany Knox et al, Prenatal Exposure to Mixtures of Nonpersistent Endocrine-Disrupting Chemicals and Angiogenic Biomarkers, Placental Function, and Fetal Growth, Environmental Science & Technology (2026). DOI: 10.1021/acs.est.5c13234

Comment by Dr. Krishna Kumari Challa 5 hours ago

Common NSAIDs in first trimester show no birth defect link, data suggest
First trimester exposure to common NSAIDs, including ibuprofen, diclofenac, and naproxen, was not associated with an increased risk of major congenital malformations or defects in specific organ systems. No significant dose-response relationship was observed, indicating NSAID use in early pregnancy does not elevate birth defect risk.
Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen and naproxen, taken during the first trimester of pregnancy are not associated with an increased risk of major birth defects, according to a new study published in PLOS Medicine.
Pain and fever are common in early pregnancy and the options to manage them have been limited. Studies have raised safety concerns regarding acetaminophen while data on the safety of NSAIDs—which include widely used medications such as ibuprofen, diclofenac, and naproxen—has remained inconclusive.

The new study used data from the Southern Israeli Pregnancy Registry (SiPREG) to analyze 264,858 singleton pregnancies between 1998 and 2018, of which 20,202 (7.6%) were exposed to NSAIDs during the first trimester—most commonly ibuprofen (5.1%), diclofenac (1.6%), and naproxen (1.2%).

Major congenital malformations were identified from linked clinical, hospitalization, and termination records. The researchers adjusted risks for maternal and pregnancy characteristics including maternal age, ethnicity, diabetes, obesity, folic acid use, and the reason for NSAID use.

NSAID exposure was not associated with major congenital malformations overall (8.2% vs. 7.0% in unexposed pregnancies; matched adjusted relative risk = 0.99), nor with malformations in specific organ systems including the cardiovascular, musculoskeletal, central nervous system, gastrointestinal, and genitourinary systems.

No association was observed for any individual drug, and dose-response analyses found no significant link between cumulative NSAID exposure and birth defect risk.
The results provide reassuring evidence that NSAID use in early pregnancy is not associated with major birth defects.

Hasidim AA, et al. First-trimester nonsteroidal anti-inflammatory drugs exposure and risk of major congenital malformations: A retrospective register-based cohort study, PLOS Medicine (2026). DOI: 10.1371/journal.pmed.1005063

Comment by Dr. Krishna Kumari Challa 5 hours ago

When words look like their meaning, we process them faster, new research reveals
Words whose visual letter shapes resemble their meanings—demonstrating visual iconicity—are processed more quickly and accurately, even after controlling for word frequency, length, and concreteness. Words for round or spiky objects rated higher in iconicity when containing correspondingly shaped letters, and such words are typically learned earlier. This suggests that visual features of written words can facilitate language processing.

Comment by Dr. Krishna Kumari Challa 7 hours ago

Research shows individual protein needs vary widely, challenging the idea of a single daily target

Individual protein requirements vary significantly based on factors such as age, sex, activity level, and health status, making a single daily protein guideline insufficient for all populations. Newer measurement methods indicate protein breakdown may be higher than previously estimated, supporting a shift toward individualized, context-specific protein recommendations.
Protein has become the star of the modern diet. From shakes, bars and powders to viral fitness advice, the message seems clear: more protein equals better health. But new research suggests it's not that simple.
For decades, nutrition guidance has centered on a single benchmark: about 0.8 grams of protein per kilogram of body weight per day. That recommendation was designed to meet the needs of nearly all healthy people, and it remains the standard used in dietary guidelines today.
But the problem is that this guideline was never meant to apply to everyone. Two people with the same body weight may have different requirements depending on factors like sex, activity level, age and overall health.
We need to think more on an individual basis. You cannot take one value. Protein requirements were never meant for special populations—they were only meant for healthy, young people. When you get older, your requirements change, and more importantly, if you have a chronic disease, your requirements are also different. So, you cannot use this one number in all cases.

If you've been trying to hit a specific protein goal every day, here's some reassurance: you're likely already getting enough!
The limits of a one-size-fits-all protein guideline:
Part of the issue lies in how protein needs have traditionally been measured.
Researchers have traditionally relied on methods that track amino acids in the bloodstream to estimate how much protein the body breaks down and needs to replace. But those measurements don't fully capture what's happening inside the body's cells, where protein turnover takes place.

As a result, they can underestimate how much protein the body is actually using.
Using a new approach, the researchers found that protein breakdown in the body may be significantly higher than previously estimated, helping explain why a single universal guideline may not reflect individual needs.

The future of nutrition lies in tailoring recommendations to the individual.

This is what the researchers call precision nutrition and individualized protein needs.

This approach considers factors like a person's habitual diet, health status and physiology, recognizing that two people of the same size may have very different nutritional needs.

Instead of chasing a universal number, the focus should shift toward understanding individual needs and context.

Nicolaas E.P. Deutz et al, A novel pulse tracer method to estimate the relationship between amino acid meal composition and its intracellular disposal, Clinical Nutrition (2025). DOI: 10.1016/j.clnu.2025.10.002

Comment by Dr. Krishna Kumari Challa 7 hours ago

Heart disease risk may start in the womb

A child's future heart health may be partially shaped before they are born, reports a new study that found pregnancy complications are linked to poorer cardiovascular health in offspring more than 20 years later.
Maternal pregnancy complications, particularly high blood pressure, are associated with poorer cardiovascular health in offspring at age 22, including higher BMI, blood pressure, blood sugar, and increased arterial wall thickness. Gestational diabetes and preterm birth also showed links to adverse cardiovascular markers. These findings suggest that cardiovascular risk may be influenced by prenatal exposures.
The study found that young adults whose mothers had high blood pressure during pregnancy—either pregnancy-associated hypertension, pre-eclampsia or eclampsia—had more signs of early arterial injury, higher blood pressure, higher body mass index and higher blood sugar than peers.

The authors said the study adds to growing evidence that cardiovascular risk may be transmitted across generations through a combination of biological, environmental and behavioural factors.

That means we must make sure people maintain good health from childhood into young adulthood, so that if or when someone becomes a parent, they pass on the best opportunity for good health to their children.
At around age 22, participants whose mothers had high blood pressure during pregnancy had:

Higher body mass index (+2.8 BMI points)
Higher diastolic blood pressure (+2.3 mm Hg)
Higher blood sugar levels (+0.2% HbA1c)
Thicker artery walls (~0.02 mm)
While the difference in artery wall thickness may seem small, the study authors said it corresponds to roughly three to five years of additional vascular aging. That means arteries look older and less healthy than expected, which raises the risk of future heart disease.

Other pregnancy complications also showed some long-term effects:

Exposure to gestational diabetes was linked to worse blood pressure and some evidence of artery thickening
Being born preterm was associated with higher blood sugar levels

The good news is that most heart disease is preventable

Adverse Pregnancy Outcomes and Cardiovascular Health Among Offspring in Early Adulthood, JAMA Network Open (2026). DOI: 10.1001/jamanetworkopen.2026.6783

Comment by Dr. Krishna Kumari Challa 8 hours ago

Satellite launch pollution is rapidly accumulating in the upper atmosphere
Megaconstellation satellite launches since 2019 are projected to contribute 42% of the space sector’s climate impact by 2029, primarily through black carbon emissions that persist in the upper atmosphere and are 540 times more effective at altering climate than surface sources. This pollution reduces sunlight reaching Earth, with effects comparable to geoengineering proposals, though the overall cooling impact is minimal relative to ongoing global warming. Ozone depletion from current launches remains small, but future impacts are uncertain as more satellites are deployed using various rocket fuels. The rapid increase in launches and persistent upper-atmosphere pollution highlight the need for regulatory action.

Radiative Forcing and Ozone Depletion of a Decade of Satellite Megaconstellation Missions, Earth's Future (2026). DOI: 10.1029/2025EF007229

Comment by Dr. Krishna Kumari Challa 8 hours ago

The results showed a strong link between ultra-processed foods and asthma. "Higher UPF consumption may be associated with an increased risk of developing asthma in school-age children," commented the team in their paper.

Beyond the nearly fourfold increase in asthma risk compared to children with the lowest intake of UPFs, the study found that the quantity of processed foods mattered. As the percentage of processed food in a child's diet went up, the likelihood of an asthma diagnosis also appeared to increase.

However, no such link was shown between ultra-processed foods and other allergic conditions. The study authors suggest that this may be because UPFs are irritating the lungs through a type of inflammation not related to an allergic reaction.

Given the link between diet and asthma suggested in the study, the scientists issued a call to action. "These findings highlight the need for public health policies aimed at limiting processed food consumption in children's diets as a preventive strategy."

O. Galindo et al, Ultra‐Processed Food Consumption and Childhood Allergic Diseases: Increased Risk of Asthma Onset in the SENDO Project, Allergy (2026). DOI: 10.1111/all.70378

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