Human Biology News

July 23, 2026

Top Headlines

Coffee May Protect Your Heart but Energy Drinks Could Harm It

July 21, 2026 For most adults, a daily caffeine habit may be safer for the heart than many people assume. A new American Heart Association review found that up to 400 milligrams of caffeine a day, roughly three to five cups of regular black coffee, is generally ...

New Molecular Map Reveals How the Flu Virus Hijacks Human Cells

July 21, 2026 Scientists uncovered how influenza A commandeers human cells, including a surprising strategy that dissolves tiny structures in the nucleus and releases proteins the virus may use to reproduce. The detailed molecular map could reveal new drug ...

Alzheimer’s Breakthrough: Scientists Restore Two Hours of Sleep Without Clearing Brain Plaques

July 20, 2026 Researchers have uncovered a surprising culprit behind sleep loss in Alzheimer’s disease: the brain’s own immune cells. In mice with amyloid plaques, overactive microglia triggered inflammation ...

UCLA Scientists Develop Mineral Sunscreen Without the Chalky White Cast

July 19, 2026 Scientists have redesigned zinc oxide particles to create a mineral sunscreen that protects against ultraviolet radiation without leaving such a noticeable white cast. The SPF 30 formula could make sunscreen easier and more appealing to use across a ...

July 18, 2026 Several popular sugar substitutes may not be as harmless as they seem. Adults who consumed the most artificial sweeteners showed substantially faster declines in memory and thinking, especially if they were under 60 or had diabetes. The highest ...

Mediterranean Diet May Activate Tiny Proteins That Protect the Heart and Brain

July 17, 2026 The Mediterranean diet may influence aging through tiny proteins produced inside the cell’s mitochondria. Older adults who followed the diet most closely had higher levels of humanin and SHMOOSE, ...

Scientists Tested 39 Sweeteners and Found Unexpected Gut Effects

July 17, 2026 A large laboratory study found that many commonly used sweeteners can directly change the growth of gut bacteria. Researchers identified more than 100 cases in which sweeteners behaved differently when combined with medications, caffeine, or ...

New Alzheimer's Drug Repairs DNA Damage and Reduces Brain Inflammation

July 17, 2026 A drug originally developed for spinal cord injury may offer a fresh approach to treating Alzheimer’s disease. In mouse studies, KCL-286 repaired dangerous DNA damage, reduced inflammation, and targeted multiple disease-related pathways instead of ...

Scientists Finally Solved Why Some Frogs Survive a Deadly Fungus

July 14, 2026 A deadly fungus has wiped out amphibian populations around the globe, yet some mysteriously recover. Researchers discovered that survivors develop powerful immune defenses while they are still tadpoles, giving them a head start before the fungus can ...

Eating Chili Peppers May Raise the Risk of One Deadly Cancer

July 14, 2026 A major review found that people who consumed the most chili peppers had a substantially higher risk of esophageal cancer, though the evidence was less clear for stomach and colorectal cancers. Researchers emphasize that the findings show an ...

Scientists Discover Why Peach Fuzz Can Suddenly Make You Itch

July 14, 2026 A newly discovered network of fine hairs and specialized nerve cells appears to form a dedicated system for sensing mechanical itch, offering fresh insight into why chronic itching occurs. Because humans show signs of having the same pathway, the ...

Losing Just 80 Minutes of Sleep a Night Could Make You Gain Weight

July 13, 2026 Sleeping about an hour and 20 minutes less each night for six weeks caused participants to gain weight and spend more time inactive. Researchers found that even mild, realistic sleep loss, similar to what many adults experience, had measurable ...

Latest Headlines

updated 10:30am EDT

Scientists Discover a Hidden Heart Valve Risk Linked to Gum Disease

July 13, 2026 Researchers found that bacteria linked to gum disease may help drive the development of calcific aortic valve stenosis by triggering inflammation and calcium buildup in the heart valve. The early ...

Experimental Drug Reverses Severe Fatty Liver Disease by Repairing the Gut

July 11, 2026 An experimental drug called DT-109 reversed severe fatty liver disease in animal studies by repairing the gut and preventing harmful toxins from damaging the liver. The discovery could open the door ...

Why the Human Body Has So Many Design Flaws

July 10, 2026 Many of the body's biggest flaws are the result of evolution building on old designs instead of starting over. Our spine, eyes, teeth, pelvis, and even certain nerves all reveal compromises that ...

Scientists Discover the One Nutrient Beneficial Parasites Can't Live Without

July 10, 2026 A new study found that dietary fiber can determine whether beneficial intestinal worms help reduce inflammation or become essentially inactive. With ...

A Hidden Immune Backup System Could Supercharge mRNA Cancer Vaccines

July 9, 2026 Researchers found that mRNA cancer vaccines can recruit an unexpected immune cell to launch powerful tumor-fighting responses, overturning a long-held assumption about how the vaccines work. The ...

Harvard Scientists Turn a Silicon Chip Into a DNA Writing Machine

July 8, 2026 Scientists have created a silicon chip that can write dozens of DNA sequences simultaneously using electricity and water-based enzymes, offering a cleaner alternative to conventional DNA ...

Tiny Silica Particles Wiped out Aggressive Prostate Cancer in Mice

July 8, 2026 Tiny silica nanoparticles engineered to seek out prostate cancer caused tumor cells to self-destruct and supercharged the immune system in preclinical mouse studies. Combined with immunotherapy, the ...

Can't Stick to a Diet? Intermittent Fasting May Be Easier Than Counting Calories for Weight Loss

July 8, 2026 Intermittent fasting helped people lose as much weight as calorie restriction, but without the same feeling of constantly controlling their food ...

Scientists Found a Surprising Cancer Fighter Hiding Inside Tumors

July 7, 2026 Scientists at the University of Illinois Chicago have turned an unlikely source into a potential new weapon against cancer: bacteria that naturally live inside tumors. They developed a peptide called ...

Textbooks Were Wrong: Scientists Reveal How Human Hair Really Grows

July 7, 2026 A new study suggests human hair grows in a way scientists never expected. Researchers found that hair is pulled upward by coordinated cell movements inside the follicle rather than simply being ...

Scientists Discover a Completely Different Way to Fight Viruses

June 30, 2026 Researchers have uncovered an unexpected antiviral defense system in sea anemones that works very differently from the one humans use. The discovery suggests evolution developed multiple ways to ...

USC Scientists Just Unlocked an Endless Supply of Cancer-Fighting Immune Cells

June 29, 2026 A new stem-cell-inspired technique allows scientists to grow vast numbers of immune-cell progenitors that can be engineered to hunt cancer and strengthen immune responses. In animal studies, the ...

Scientists Discover Neurons Must Break Their DNA to Build the Brain

June 21, 2026 As newborn neurons make their way through the developing brain, they must squeeze through incredibly tight spaces to reach their final destinations. Researchers discovered that this physical journey ...

A Daily Probiotic May Help Relieve Depression and Anxiety

June 17, 2026 A small clinical trial suggests that probiotics may offer a surprising mental health boost for older adults with depression. Seniors who took a daily probiotic alongside their regular antidepressant ...

One Tiny Mutation May Explain How Bat Viruses Become Human Threats

June 23, 2026 Scientists found that one tiny genetic change can completely alter how a coronavirus behaves in different species. Comparing SARS-CoV-2 with a closely related bat-only virus, they showed that a ...

Common Plastic Chemical Linked to Lifelong Anxiety in New Study

June 17, 2026 Exposure to a common plastic chemical before and shortly after birth may have lasting effects on behavior. Researchers found that male rats exposed early in life to DEHP—a plasticizer used in ...

Scientists Found a Surprising Problem With Sugar-Free Diets

June 14, 2026 A surprising new study suggests that completely eliminating sugar may backfire. Mice on a sucrose-free low-fat diet showed worse blood sugar control, increased inflammation, disrupted gut bacteria, ...

This Common Vitamin Deficiency Can Mimic Normal Aging

June 25, 2026 Vitamin B12 is needed in microscopic amounts, but a shortage can have major effects on health and energy. The vitamin was first linked to a lifesaving liver treatment for pernicious anemia nearly 100 ...

Can Fasting Fight Gum Disease? Scientists Find Surprising Link

June 12, 2026 A low-calorie fasting-style diet significantly reduced inflammation linked to gum disease in a small clinical study. The findings suggest that what people eat may influence gum health almost as much ...

Brain Scans Reveal Two Distinct Types of Autism

June 3, 2026 Scientists have uncovered evidence that autism may include at least two biologically distinct subtypes, each marked by a different pattern of brain communication. By combining brain scans from nearly ...

Human Organoids Reveal How to Reverse “irreversible” Nerve Damage

May 28, 2026 Cambridge researchers created miniature brain-and-spinal-cord systems in the lab that can send signals and even trigger tiny muscle contractions. They discovered that human neurons gradually lose ...

Scientists Discover Hidden Gut-Brain Circuit That Triggers Protein Cravings

May 28, 2026 When the body runs low on protein, the gut sends powerful signals to the brain that reshape cravings and push animals to seek essential amino acids instead of sugar. Researchers say this newly ...

This DNA Repair Gene Went Rogue and Exposed a Cancer Weakness

June 20, 2026 Scientists have discovered that a gene normally considered a DNA-protecting "good guy" can become dangerous when cells make too much of it. The gene, EXO1, acts like molecular scissors that ...

Scientists Discover a Hidden Cause of Aging Cells That Can Be Reversed

June 11, 2026 Researchers discovered that declining levels of phosphatidylcholine may be a major cause of age-related mitochondrial dysfunction and loss of cellular energy. Remarkably, boosting this nutrient ...

Researchers Found 8 Common Food Additives Linked to High Blood Pressure and Heart Disease

June 18, 2026 A major study of more than 112,000 people found that eating foods containing common preservatives may be linked to a higher risk of high blood pressure and heart-related diseases. Researchers tracked ...

New AI Body Map Reveals Obesity’s Hidden Attack on Facial Nerves

May 23, 2026 Scientists have created an AI-powered system that can scan and map an entire mouse body in extraordinary detail — and it just uncovered a surprising new effect of obesity. Beyond disrupting ...

Eating Grapes Daily Could Unlock Powerful Skin Protection

May 18, 2026 Scientists discovered that eating grapes can actually change how your skin behaves at the genetic level. After just two weeks of daily grape consumption, volunteers showed signs of improved skin ...

Ultra-Processed Foods Linked to Higher Risk of Heart Disease and Early Death

May 10, 2026 Ultra-processed foods may be doing far more damage than many people realize. A major new European cardiology report warns that people who eat the most ultra-processed foods face significantly higher ...

Scientists Shut Down Cancer DNA Repair to Overcome Drug Resistance

June 10, 2026 Cancer cells often survive treatment by fixing the DNA damage that therapy is meant to cause. Researchers found that UNI418 can disrupt this repair ability, leaving cancer cells more exposed. When ...

Scientists Discover Why Some DNA-Doubled Cells Refuse to Die

May 25, 2026 Scientists have uncovered a surprising twist in how cells behave when division goes wrong. Sometimes a cell successfully copies its DNA but fails to split into two, leaving it with double the genetic ...