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If bone health was vitamin D’s initial claim to fame, let’s call its role in immune health1 the thing that put this essential vitamin back on the map.* And while calcium absorption2 and immune response are fantastic ways for vitamin D to support our well-being, we shouldn’t sleep on the other amazing talents this vitamin has to offer.*

You have full access to this article via your institution. Hello Nature readers, would you like to get this Briefing in your inbox free every day? Sign up here.Melanoma cells (artificially coloured). An immune-based therapy was more effective against this cancer in people who received an mRNA-based COVID-19 vaccine within 100 days of the start of their cancer treatment.Credit: Steve Gschmeissner/SPL The immune-boosting effect of mRNA-based COVID-19 vaccines seems to increase the effectiveness of cancer therapies called immune checkpoint inhibitors (ICIs). Researchers found that people being treated for certain deadly cancers lived longer if they had received an mRNA-based COVID-19…

Beyond the bench, this postdoc finds inspiration in mentoring young scientists as they grow into independent researchers.Image credit:Remini, ©iStock, koto_fejaQ | Write a brief introduction to yourself including the lab you work in and your research background. My name is Adam Schuller, and I work in the lab of Dr. Ronald B. Tjalkens at the Colorado State University, studying the role of environmental toxin exposure in the context of Parkinson’s disease and related dementias. We apply high-content microscopy and deep learning-based image analysis to quantify cellular changes that occur in glial populations during the prodromal phases of disease and correlate…

Amazon search data tells an even more dramatic story: an 80% decline in shopping searches between late 2024 and mid-2025. This striking divergence signals more than a market correction—it represents the evolution of consumer sophistication in the longevity supplement space.The tale of two trendsRising scientific curiosityGeneric searches for “NAD” reveal sustained and growing fascination with the science. Monthly searches climbed from 55,408 in January 2024 to a peak of 129,328 by July 2025—a remarkable 133% increase. Even after seasonal moderation to 108,965 searches in September 2025, interest remains robust. This resilience suggests that NAD+’s biological role continues to captivate public…

These flavorful and nutritious vegetarian dinners are a great way to support your heart health. Each meal is made low in sodium and saturated fats to align with a heart-healthy eating pattern. Plus, to help combat pesky symptoms of inflammation like digestive issues, muscle aches and joint stiffness, these tasty dishes are packed with foods that have anti-inflammatory properties. This includes a variety of deep-orange and dark-green vegetables, legumes, whole grains and healthy fats. You’ll be making healthy and delicious recipes like our High-Fiber Chopped Salad with Italian Vinaigrette and our Garlicky Cabbage Soup on repeat once you try them.…

Matt LimbLondonmattlimb.uk{at}gmail.comFriends of Hari Kumar feared he might be “brainwashed into becoming a communist” when he left his Indian village as a teenager in 1971 to study medicine in the former Soviet Union.That didn’t happen, but the nine years in Moscow that set him up for a career as a surgeon in the UK seeded a huge affection for Russia, its people, and culture under Leonid Brezhnev’s grinding regime.Later, Kumar became a much loved figure at Doncaster Royal Infirmary. He worked there from 1994 to 2023, including 20 years as a consultant orthopaedic surgeon. He had long wanted to be…

Call it a jazzed-up version of your childhood crystal-growing kit. Scientists have shown that, using lasers, they can grow crystals on demand1. Access options Access Nature and 54 other Nature Portfolio journals Get Nature+, our best-value online-access subscription $32.99 / 30 days cancel any time Subscribe to this journal Receive 51 print issues and online access $199.00 per year only $3.90 per issue Rent or buy this article Prices vary by article type from$1.95 to$39.95 Prices may be subject to local taxes which are calculated during checkout Additional access options: doi: https://doi.org/10.1038/d41586-025-03415-8 Subjects Latest on:

Ariel Karlinsky was confused. A PhD student at The Hebrew University of Jerusalem, he had just received a message stating the paper he had submitted to an economics conference in Moldova had been accepted.But Karlinsky hadn’t submitted his work to the conference. In fact, he had never even heard about the event.At first, Karlinsky assumed a predatory conference had signed him up without his knowledge. But he recognized the name of one of the organizers, the National Institute for Economic Research, which he knew to be legitimate.Someone, it turned out, was impersonating Karlinsky. On August 11, that someone had submitted…

On October 20, 2025, the U.S. Food and Drug Administration (FDA) announced an expanded Class I recall of over 6 million eggs produced by Black Sheep Egg Company. The eggs may be contaminated with salmonella, a bacteria that poses a serious risk of illness or even death for some vulnerable groups.[1]Black Sheep issued the recall, classified as the agency’s most serious level, after facility inspections found 40 positive environmental samples of salmonella, including strains known to cause human illness.The October 20 announcement did not mention any reports of illness, but an earlier, October 17, announcement said there had been no…

DIY food-themed costumes make for creative, easy and last-minute Halloween fun for all ages.From grapes and mac & cheese to Cosmic Brownies and cotton candy, these ideas use simple materials.Classic picks like pumpkins or clever ones like “chef’s kiss” keep costumes festive and funny. Halloween is one of the most special days of the season. With pumpkin carving, scary movies and heaps of candy, there’s nothing quite like the fall holiday. And of course, the costumes are arguably the most essential part of the festivities. But if you need some inspiration for a last-minute costume, these food costumes are bound…