A new study from Oregon State University suggests that daily exposure to blue light, emitted from phones, computers, and other gadgets, may affect longevity damaging cells in the brain, as well as retinas.
For the research, the scientists exposed flies to blue LED light for 12 hours every day. Flies that experienced 12 hours of blue wavelength and 12 hours of darkness had shorter lives compared to flies kept in total darkness or those kept in light without blue wavelength.
Lead researcher Jaga Giebultowicz, who studies biological clocks, says: “[…] there is evidence suggesting that increased exposure to artificial light is a risk factor for sleep and circadian disorders. And with the prevalent use of LED lighting and device displays, humans are subjected to increasing amounts of light in the blue spectrum since commonly used LEDs emit a high fraction of blue light.”
According to a new long-term study, which followed more than 900 people from New Zealand for around 40 years, people in their 40s who walk slowly are more likely to show symptoms of accelerated biological aging and compromised brain integrity.
Within the scope of the study, the researchers measure the walking speed of participants whose age was 45 years. These participants were also assessed for the presence of accelerated aging signs, which included 19 different biomarkers.
The authors of the study write in their paper: “Remarkably, in our study, gait speed was associated not only with concurrent neurocognitive functioning in adulthood but also with neurocognitive functioning in early childhood.”
A new study, published in the journal JAMA Network Open, suggests that increased consumption of vitamins B-6 and B-12 is associated with a higher risk of hip fracture.
For the study, the researchers analyzed data taken from 75,864 postmenopausal women who took part in the Nurses’ Health Study. The taken data related to health, data, supplements, recreational activities, medications, smoking habits, and BMI.
The analysis showed that the risk of hip fracture was the highest in women with a combined intake of both vitamins, exhibiting an almost 50% higher risk of the condition compared to the women with the low intake of both vitamins.
The authors write in their paper: “Although we acknowledge the limitations of our cohort design, the findings herein add to the body of literature that suggests caution should be used in vitamin supplementation when there is no apparent deficiency.”
New research from the Future Science Research Centre in the Republic of Korea suggests that air pollution may have a great impact on hair loss.
For their research, a team of scientists exposed human follicle dermal papilla cells (HFDPC) to particles of dust and diesel of size PM10, which diameter is generally 10 micrometer and smaller. The analysis of the gathered data showed that exposure to PM10-like particles lowered levels of a protein key for hair growth.
Lead author of the study Hyuk Chul Kwon says: “Our research explains the mode of action of air pollutants on [HFDPCs], showing how the most common air pollutants lead to hair loss.”
Recent research by scientists from the Silent Spring Institute in Newton, US, finds that people who eat home-cooked meals more often are more likely to have lower levels of PFAS, harmful chemicals found in packaged food, household products, etc., in their blood.
For this study, the researchers carried out an analysis of data from the National Health and Nutrition Examination Survey. The data were taken from 10,106 participants in general. The participants provided detailed information concerning their diets and eating patterns.
The results of the analysis showed that people eating at home had lower levels of PFAS in the blood, and those who ate out more often and consumed more fast foods had more PFAS in their blood.
Study co-author Laurel Schaider, Ph.D., an environmental chemist at Silent Spring, comments: “This is the first study to observe a link between different sources of food and PFAS exposures in the U.S. population. Our results suggest the migration of PFAS chemicals from food packaging into the food can be an important source of exposure to these chemicals.
A new study from Uppsala University, Sweden, suggests that dog owners returning from a hospital after a stroke or heart attack have a significantly lower risk of death compared to those who don’t have dogs.
To complete this research, the scientists took data from a major national health register which included health records of around 182,000 patients aged from 40 to 85 who had suffered from an acute heart attack between 2001 and 2012.
The analysis showed that people living alone with a dog were at a 27% lower risk of death, and those living with a dog and a partner or a child were 12% better off.
Tove Fall, an epidemiologist from Uppsala University, says: “We know that social isolation is a strong risk factor for worse health outcomes and premature death. Previous studies have indicated that dog owners experience less social isolation and have more interaction with other people.”
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