Daniela Hernandez
Wall Street Journal
New York, NY, United States
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Past articles by Daniela:
As Psychedelics Become More Mainstream, Here’s What You Need to Know
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Ozempic’s Other Unexpected Side Effect Is All in Your Head
Diabetes drugs could become an effective way to treat behavioral issues and addiction. WSJ’s Daniela Hernandez breaks down the science on how they work and how → Read More
The Brain Science of Aggression and Why Lashing Out Can Feel Good
Nearly one in four people surveyed in Gallup's latest Global Emotions Report said they’d recently felt anger. WSJ’s Daniela Hernandez explains the neuroscience → Read More
Metformin and Autophagy: The Cellular Recycling Process Behind Aging
Metformin may have anti-aging properties because of a cellular recycling process called autophagy. WSJ’s Daniela Hernandez explains what autophagy is and why bo → Read More
The Science Behind Controversial New Weight Loss Drugs Like Ozempic
Some drugs initially approved to treat Type 2 diabetes are now being used for cosmetic weight loss. WSJ’s Daniela Hernandez explains how they work, their side e → Read More
The Neuroscience of Why Spicy Foods Can Make Us Feel Great – or Terrible
Chili peppers contain a chemical compound called capsaicin that activates pain receptors in the mouth. But why do we perceive it as hot? WSJ’s Daniela Hernandez → Read More
High-Tech Smell Sensors Aim to Sniff Out Disease, Explosives—and Even Moods
Advances in artificial intelligence, bioengineering and synthetic biology are powering a new breed of odor sensors, some using living cells → Read More
Covid-19 Reinfections: What You Need to Know
If you’ve had Covid before, why can you get it again? WSJ’s Daniela Hernandez explains what the possibility of reinfections means for the future of public-healt → Read More
Intermittent Fasting May Have Cognitive Benefits, New Research Shows
Emerging research suggests intermittent fasting might have benefits for brain health and cognition. WSJ’s Daniela Hernandez breaks down what we know about how i → Read More
Mysterious T-Cells Are at the Center of The Second Covid Booster Debate
As fourth doses of Covid vaccines roll out, some are questioning whether the general population needs them. At the center of this debate are mysterious T-cells. → Read More
T-Rex Could Actually Be Three Separate Dinosaur Species, Study Argues
A group of paleontologists say there’s evidence the iconic Tyrannosaurus Rex could actually be three different species, based on an analysis of the dinosaur’s a → Read More
BA.2 Omicron: What to Know About the New Covid Variant
The new BA.2 Omicron variant has public health experts worried about potential new Covid-19 surges. WSJ’s Daniela Hernandez explains what you need to know about → Read More
GMO Tomatoes Could Be Returning After 25 Years. Will People Eat Them?
British scientists have developed a genetically modified purple tomato that is packed with antioxidants, and it could be approved for sale in the U.S. this year → Read More
Nuclear Radiation’s Effects on the Human Body, Explained
Nuclear radiation exposure concerns have been mounting following Russian attacks on Ukrainian nuclear power plants. WSJ’s Daniela Hernandez explores what scient → Read More
Block on Blood-Plasma Donors From Mexico Threatens Supplies
Pharmaceutical companies and U.S. officials are fighting over whether to allow people to cross from Mexico to be paid for giving blood plasma, a critical ingredient in treatments for some diseases. → Read More
Here’s How Viral Death-Defying Videos Make You Wince
Why do we feel anxious observing a daredevil hang from a rooftop ledge? WSJ’s Daniela Hernandez explains what exactly happens in your brain with this phenomenon → Read More
How Do You Teach a Goldfish to Drive? First You Need a Vehicle
Neuroscientists put fish and rats in the driver’s seat in experiments intended to help learn how brains adapt to change → Read More
Ask WSJ: What to Know About the New Omicron Covid-19 Variant
Since its discovery was announced last week, the Omicron variant of the coronavirus has rattled markets and set scientists racing to find out how it differs from other strains. Join WSJ's Health Business editor Jonathan Rockoff in conversation with reporters Daniela Hernandez and Gabriele Steinhauser about the Omicron variant, its potential response to vaccines, treatments and past infection,… → Read More
How Mexican Gymnasts Defied the Odds and Leapt Into Olympic History at the Tokyo Games
Mexican gymnasts often don’t have the same resources available to their American counterparts, making it more difficult for them to train and compete on the world’s stage. → Read More
The Dystopian Quarantines That Crushed Olympic Dreams
Isolation exacerbated the devastation felt by athletes who tested positive for Covid-19 in Tokyo. One athlete built a companion named Bob for company. → Read More