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Sunscreen
Sunscreen (also known as sunblock) is a lotion, spray or other topical product that helps protect the skin from the sun's ultraviolet (UV) radiation, and which reduces sunburn and other skin damage, ultimately leading to a lower risk of skin cancer.
The best sunscreens protect against both UVB (ultraviolet radiation with wavelength between 290 and 320 nanometres), which can cause sunburn, and UVA (between 320 and 400 nanometres), which damages the skin with more long-term effects, such as premature skin aging. Most sunscreens work by containing either an organic chemical compound that absorbs ultraviolet light (such as oxybenzone) or an opaque material that reflects light (such as titanium dioxide, zinc oxide), or a combination of both. Typically, absorptive materials are referred to as chemical blocks, whereas opaque materials are mineral or physical blocks.
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Health & Medicine News
April 14, 2026
Apr. 14, 2026 Bread and other carbohydrate staples may be doing more than just filling plates—they could be quietly reshaping metabolism. In a surprising twist, researchers found that mice strongly preferred carbs like bread, rice, and wheat, abandoning their ...
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Apr. 13, 2026 Mitochondria don’t just generate energy—they also carefully organize their own DNA in a surprisingly elegant way. Scientists have discovered that a long-overlooked phenomenon called ...
Apr. 13, 2026 Spending time with close companions might do more than strengthen bonds—it could also reshape your gut bacteria. In a study of island birds, those with stronger social ties shared more gut microbes, especially types that require direct contact to ...
Apr. 13, 2026 Public restrooms might seem like a germ nightmare, but the real risks aren’t always where you think. While toilet seats can carry bacteria, viruses, and even parasite traces, studies show they’re often cleaner than high-touch surfaces like door ...
Apr. 13, 2026 Scientists have developed a new way to fight gum disease without wiping out the mouth’s helpful bacteria—a major shift from traditional treatments. Instead of killing everything, this targeted approach blocks only the harmful microbes that drive ...
Apr. 13, 2026 New research reveals that obesity affects men and women in surprisingly different ways. Men are more likely to develop harmful abdominal fat and signs of liver stress, while women show higher inflammation and cholesterol levels. These differences ...
Apr. 13, 2026 For years, scientists believed our lifespan was mostly shaped by environment and chance, with genetics playing only a minor role. But a new study from the Weizmann Institute flips that idea on its ...
Apr. 13, 2026 A twice-yearly injection may soon change how high blood pressure is treated. In a global trial, patients receiving the experimental drug zilebesiran alongside standard therapy saw greater blood pressure reductions than those on standard treatment ...
Apr. 12, 2026 A newly discovered molecule could reshape the future of weight loss treatments by mimicking the powerful appetite-suppressing effects of drugs like Ozempic — but without many of the unpleasant side effects. Identified using artificial ...
Apr. 12, 2026 A new study reveals that popular diabetes and weight-loss drugs like Ozempic and Wegovy may not work as effectively for about 10% of people due to specific genetic variants. These individuals appear ...
Apr. 12, 2026 Researchers are launching a new project to crack the mystery of aggressive breast cancer, where predicting disease progression remains a major hurdle. By studying how tumors interact with and suppress the immune system, scientists aim to identify ...
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Apr. 12, 2026 A new nanodisc-based platform lets scientists study viral proteins in a form that closely mimics real viruses, revealing how antibodies truly ...
Apr. 11, 2026 Putting on weight earlier in life may be more dangerous than previously thought. Researchers found that early adulthood obesity significantly raises the risk of premature death, especially from major ...
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Apr. 11, 2026 Scientists searching for air pollution clues stumbled onto something unexpected: toxic MCCPs drifting through the air for the first time in the Western Hemisphere. The likely source—fertilizer made ...
Apr. 11, 2026 Scientists have achieved the unthinkable by stabilizing a highly reactive molecule in water, confirming a decades-old theory about vitamin B1’s role in the body. The breakthrough not only solves a ...
Apr. 11, 2026 Losing your sense of smell might signal Alzheimer’s far earlier than expected. Scientists found that immune cells in the brain actively destroy smell-related nerve fibers after detecting abnormal ...
Apr. 10, 2026 Researchers have uncovered why a rare blood clotting disorder can occur after certain COVID-19 vaccines or adenovirus infections. The immune system can mistakenly target a normal blood protein (PF4) ...
Apr. 10, 2026 Alzheimer’s isn’t just one problem—it’s a tangled mix of biology, aging, and overall health. That’s why drugs targeting a single factor have fallen short, even as new treatments show modest ...
Apr. 10, 2026 A common eye-health nutrient, zeaxanthin, may also help the body fight cancer more effectively. Scientists discovered it strengthens T cells and enhances the impact of immunotherapy treatments. Found ...
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