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The clock will strike 1 a.m. twice Sunday morning as daylight saving time once again comes to an end. Here’s what you need to know about daylight saving time and why the U.S. changes clocks twice a year. Daylight saving time began March 10 and ends Nov. 3. In 2025, daylight saving time starts on Sunday, March 9, and ends on Sunday, Nov. 2, when it’s time to repeat the process. In the Northern Hemisphere, most of the countries that observe daylight saving time are in Europe and North America.

Persons: Karin Johnson, Kin Yuen Organizations: U.S, Astronomical, Department, Pew Research Center, U.S . Senate, Protection, National Conference of State Legislatures, UMass Chan Medical, NBC News, University of California, American Academy of Sleep Locations: U.S, Hawaii, Arizona, Europe, North America, Southern, San Francisco

☆ 1 in 3 children worldwide is now nearsighted, study shows
▼ + stars: | 2024-09-25 | by ( Jack Guy | ) edition.cnn.com time to read: +4 min

Nearsightedness, or myopia, refers to when closer objects are clear, but distant objects are blurry. Nearsightedness is expected to keep rising among children and adolescents. This could be due in part to the fact that East Asian children start formal education at the age of 2 or 3, earlier than kids in other regions, the researchers say. Progression of nearsightedness in children can be slowed by taking breaks and avoiding hour after hour on the phone or computer, he wrote. Limiting up-close reading time outside of school — screen time or otherwise — may help slow the progression of nearsightedness in children, he added.

Persons: Sun, Dibyangshu Sarkar, “, Dr, Benjamin Botsford, ”, Botsford Organizations: CNN, British, Ophthalmology, University, UMass Chan Medical Locations: Guangzhou, China, AFP, Singapore, Taiwan, Japan, nearsighted, South Korea

☆ Do eye exercises and blue-light blocking glasses actually work? An expert explains
▼ + stars: | 2024-06-10 | by ( Benjamin Botsford | Umass Chan Medical School | ) edition.cnn.com time to read: +6 min

The Conversation —You may have seen advertisements claiming to eliminate the need for eyeglasses through vision therapy or vision training — basically, eye exercises. These exercises include putting pressure on or palming the eye; eye movement exercises; or straining to read by using the wrong prescription glasses to “train” the eyes. Nor do these eye exercises help with presbyopia, or the need for reading glasses, which generally begins at around age 40. This decline will continue with age — and, with it, the need for stronger reading glasses will increase. Although some methods claim to alleviate the need for reading glasses, there is limited if any evidence to suggest benefit.

Persons: —, Benjamin Botsford Organizations: CNN, UMass Chan Medical

☆ A gastroenterologist has 3 tips to eat more fiber without getting bloating or constipation
▼ + stars: | 2024-05-22 | by ( Kim Schewitz | ) www.businessinsider.com time to read: +4 min

Read previewCutting down on ultra-processed foods and eating more fiber is good for gut health. Done wrong, an infusion of fiber can lead to bloating, gas, abdominal pain, cramping, and changes in bowel habits like constipation or diarrhea. Anytime we change our diet, our gut microbes are forced to adapt, he said. Stay hydratedBeing well-hydrated improves our ability to process and digest fiber, Bulsiewicz said. Drinking water when you eat fiber also helps prevent gas and bloating, according to UMass Chan Medical School.

Persons: —, It's, Dr, Will Bulsiewicz, shouldn't, Bulsiewicz, Zoe Organizations: Service, Business, Mayo Clinic, UMass Chan Medical

☆ FDA panel says Vertex/CRISPR to assess safety risks of gene therapy in follow-up study
▼ + stars: | 2023-10-31 | by ( ) www.reuters.com time to read: +2 min

[1/2] A sign hangs in front of the world headquarters of Vertex Pharmaceuticals in Boston, Massachusetts, U.S., October 23, 2019. REUTERS/Brian Snyder/File Photo Acquire Licensing RightsOct 31 (Reuters) - A panel of advisers to the U.S. health regulator said on Tuesday Vertex Pharmaceuticals (VRTX.O) and CRISPR Therapeutics (CRSP.BN) could assess potential safety risks of their sickle cell disease gene therapy after approval. If the therapy is approved, Vertex has proposed a 15-year follow up of patients to evaluate the safety outcomes of the therapy. Patients who were treated with the therapy were free from severe vaso-occlusive crisis for 12 months from the infusion of exa-cel. "It was made pretty clear that any theoretical off-target editing concerns do not outweigh the benefits of drug approval," said Salim Syed, analyst at Mizuho.

Persons: Brian Snyder, Scot Wolfe, Salim Syed, Sriparna Roy, Krishna Chandra Organizations: Vertex Pharmaceuticals, REUTERS, CRISPR Therapeutics, Staff, U.S . Food, Drug Administration, UMass Chan Medical, Analysts, FDA, Mizuho, Thomson Locations: Boston , Massachusetts, U.S, Bengaluru

☆ Home tests still work to detect Covid-19, but here’s why your test may not pick up an infection
▼ + stars: | 2023-09-18 | by ( Brenda Goodman | ) edition.cnn.com time to read: +9 min

That has led to speculation on social media that perhaps rapid tests have lost their ability to detect some of the newer coronavirus variants. “To date, the performance of currently marketed COVID-19 tests has not been adversely impacted by any new variants,” Merchak said in a statement. “That’s why the repeat testing 48 hours is so important.”Why rapid tests are often negative in kidsAnother real-world study of rapid tests identified another reason the tests sometimes don’t work well: operator error. In this study, negative rapid tests correctly meant that a child was healthy only 38% of the time. PCR tests showed that the infected kids had viral loads that should have been high enough to turn positive on rapid tests.

Persons: ”, Michael Mina, Mina, Todd Merchak, ” Merchak, ” Mina, won’t, “, Nathaniel Hafer, ” Hafer, Taiwan hadn’t, Dr, Sanjay Gupta, he’s Organizations: CNN, telltale, Twitter, National Institutes of Health, US Food and Drug Administration, Cell, RADx, FDA, CDC, University of Massachusetts, UMass Chan Medical, Rapid, CNN Health Locations: Taiwan

☆ From Alpacas to Yaks, Mammal DNA Yields Its Secrets
▼ + stars: | 2023-04-27 | by ( Emily Anthes | ) www.nytimes.com time to read: +1 min

A team of Zoonomia researchers has now used a small piece of that taxidermied tissue to learn more about the celebrity sled dog and his canine contemporaries. What can we say about his genome?”Balto, they found, was genetically “healthier” than modern purebred dogs, with more inherited genetic variation and fewer potentially harmful mutations. That finding likely stems from the fact that sled dogs are typically bred for physical performance and may be a mixture of breeds. Balto also had an assortment of genetic variants that were not present in wolves and were rare or missing in modern purebred dogs, the researchers found. Many variants were in genes involved in tissue development and may have affected a variety of traits important for sled dogs, such as skin thickness and joint formation.

☆ Clocks turn back this weekend, but the future of daylight saving time is far from settled
▼ + stars: | 2022-10-31 | by ( Aria Bendix | Aria Bendix Is The Breaking Health Reporter For Nbc News Digital. | ) www.nbcnews.com time to read: +6 min

ET on Sunday, clocks in the U.S. will turn back one hour as daylight saving time ends, marking the beginning of winter's dark evenings. Sleep experts don't support year-round daylight saving timeIdeally, the sun should reach its highest point at noon, according to sleep experts. Then at night, daylight saving can lead people to go to bed later, which can delay the body’s production of melatonin. These cumulative health risks likely influenced Mexico’s Senate vote last week to eliminate daylight saving time there. The original argument for delaying daylight doesn't hold upThe U.S. first adopted daylight saving time in 1918 to save oil and electricity during World War I.

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