Episode 68: Womb care shapes baby guts

Host: Subhra Priyadarshini; Sound editing: Prince George

Hello and welcome to This Week in India’s Science. I’m Subhra Priyadarshini. This week, we’ve got four stories that move from the microscopic world inside infants’ guts to the liquid-electrons in graphene, and from AI picking up disease early to plants healing themselves after damage.

Here is This Week in India’s Science.

*****

What happens before birth — and immediately after — matters for lifelong health.

In Delhi, researchers followed 392 mother-infant pairs from low- and middle-income neighbourhoods. Half received what they call a comprehensive care package — health, nutrition, hygiene, psychological support — beginning before conception and continuing through early infancy.

What did they find? Infants whose mothers got this full support had 45% less Klebsiella bacteria, including 38% less Klebsiella pneumoniae, which can cause pneumonia, diarrhoea, and worse. They also had more of the “good” bacteria — Megasphaera and Bifidobacterium — linked with proper digestion of breast milk and strong immune protection.

Co-corresponding author Souvik Mukherjee from the National Institute of Biomedical Genomics says, “The gut microbiome establishes itself rapidly in the first months of life.” Those first months are a window — a chance to steer development. If you build a healthy gut early, risks of stunting, infection and possibly long-term disease drop significantly.

This work offers a clear message: prenatal and early post-natal care, especially in vulnerable communities, isn’t just about nutrients — it’s also about microbial life. Such interventions are expensive, but the gains are multigenerational.

Read Nature India's story here.

*****

Now, from biology to quantum physics. Physicists at Indian Institute of Science in Bengaluru and collaborators in Japan have discovered that when graphene is tuned to its Dirac point — that special place where it’s neither strictly metal nor insulator — electrons don’t behave like particles, but like a fluid.

They built ultraclean graphene devices, encapsulated in hexagonal boron nitride, and measured electric and thermal conductivities. They found something astonishing: electrical conductivity rose while thermal conductivity dropped, and vice versa — violating the classic Wiedemann-Franz law by 200-fold.

Lead scientist Arindam Ghosh says:

Arindam Ghosh

In other words, charge and heat flow through different channels; the graphene behaves like a perfect fluid. As the researchers say, this gives us a tabletop system to study exotic states like those in high-energy physics, such as quark-gluon plasma.

Why it matters: materials that behave this way could lead to ultra-efficient electronics, new insights into quantum materials, and perhaps future devices we haven’t yet imagined.

*****

Next: AI in healthcare. A team in Pune has shown that just by using smartphone photographs of hand joints, AI models can start spotting inflammatory arthritis — conditions like rheumatoid arthritis — early.

The app was trained on photos of early arthritis and healthy controls. The models picked up subtle signs: swelling, contour changes, color around joints — signs a rheumatologist would look for.

If validated across more populations, this could help diagnose arthritis earlier — reducing damage to joints, improving treatment outcomes. Especially helpful in places without easy access to specialists or diagnostic imaging. A simple phone photo might make a difference.

Research highlight here.

*****

Our final story this week is about regeneration — not in humans, but in plants. Specifically, root tips of Arabidopsis thaliana. This plant shows an amazing ability to restore its pointed tip shape after injury.

Researchers from IISER Pune discovered that when the root tip is removed, cells just above the cut, morph. Lead scientists Kalika Prasad describes how.

Kalika Prasad

Though the work is in plants, the principles of geometry, cell shape, and mechanical forces play a huge role. As they note, it's not only about genes or hormones but about how space, mechanics and geometry guide regeneration. That insight might help in bioengineering, agriculture, or even regenerative medicine.

*****

So, four stories to carry with you: prenatal care reshaping infant guts, electrons flowing like fluid in graphene, AI spotting arthritis early, and plants rehabbing themselves after damage. These are all stories where small changes — timing, structure, observation — matter massively.

If you liked this episode, do subscribe on your favourite podcast platform and share it with someone curious about science. I’m Subhra Priyadarshini; care for science, care for health, and keep your sense of wonder alive. Till next time.