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Sunscreen can reduce skin cancer risk by 40% in youth: Study

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Sydney, July 20: Young adults who regularly use sunscreen to reduce their risk of skin cancer by 40 percent, a study has found.

According to the World Health Organization (WHO), between two and three million non-melanoma skin cancers and 1,32,000 melanoma skin cancers occur each year globally.

The global incidence of melanoma continues to increase, however, the main factors that predispose to the development of melanoma seem to be connected with recreational exposure to the sun and a history of sunburn. These factors lie within each individual’s own responsibility.

“The association of sun exposure and sunburn with melanoma risk, particularly in childhood, is well established and this study showed that regularly using sunscreen was protective against the harmful effects of sun exposure,” Xinhua news agency quoted lead researcher Anne Cust, Associate Professor at the University of Sydney in Australia, as saying.

Cust noted that it is still difficult to get people to regularly apply sunscreen, and that likelihood to do so depended on a number of factors.

“Regular users of sunscreen were more likely to be female, younger, of British or northern European ancestry, and have higher education levels, lighter skin pigmentation, and a strong history of blistering sunburn,” Cust said.

“People were less likely to use sunscreen if they were male, older, less educated, or had skin that was darker or more resistant to sunburn.”

For the study, the team analysed data of around 1,700 people aged between 18 to 40 years.

“This study confirms that sunscreen is an effective form of sun protection and reduces the risk of developing melanoma as a young adult,” Cust said.

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Exercise may reduce irregular heartbeat risk in obese people

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Atrial fibrillation is a condition that can make your heart race and put you at risk for stroke. But people who are obese are more prone to it and can reduce it if they exercise regularly.

According to a study, people with a body mass index (BMI) greater than 30 have a significantly higher risk of developing atrial fibrillation than the normal weight individuals.

“People who reported that they didn’t exercise at all had about double the risk of developing fibrillation when compared to those who were physically active and whose body weight was normal,” said co-author Lars Elnan Garnvik from the Norwegian University of Science and Technology’s (NTNU).

“However, people who were obese but who exercised a lot limited the increase in risk to no more than approximately 50 per cent. This suggests that physical activity is good for limiting the increased risk of atrial fibrillation in obese people,” Garnvik added.

For the study, published in the European Journal of Preventive Cardiology, the research team involved 43,602 men and women who participated in the study between 2006 and 2008.

“Physical activity and exercise reduce a lot of the known risk factors for atrial fibrillation, like high blood pressure, high blood sugar, high cholesterol and chronic inflammation,” said co-author Lars Elnan Garnvik from the Norwegian University of Science and Technology (NTNU).

“Physical activity can also improve a person’s fitness level, and we know that people in good shape have a reduced risk of heart failure,” Garnvik added.

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Your work emails can affect your health, relationships

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New York, Aug 14: Does your boss expects you to be ever-connected on emails and work without boundaries? If so, besides causing harm to your health and well-being, it could also lead to conflict in family relationships, a new study has revealed.

Stress due to employers’ expectations of work during non-working hours brings strain in the family ties as the employee is unable to fulfil non-work roles at home.

Such expectations are “an insidious stressor that not only increases employee anxiety, decreases their relationship satisfaction and has detrimental effects on employee health, but it also negatively affects their partner’s health and marital satisfaction perceptions,” said Liuba Belkin, Associate Professor at Lehigh University in Pennsylvania, US.

Employees do not need to spend actual time on work in their off-hours to experience the harmful effects.

The mere expectations of availability increase strain for employees and their significant others — even when employees do not engage in actual work during non-work time.

“The competing demands of work and non-work lives present a dilemma for employees, which triggers feelings of anxiety and endangers work and personal lives,” added William Becker, Associate Professor at the Virginia Polytechnic Institute and State University in the US.

The findings were presented at the Academy of Management’s annual meeting in Chicago.

According to Becker, policies that reduce expectations to monitor electronic communication outside of work should be ideal to mitigate the adverse effects of negative health outcomes.

When that is not an option, the solution may be to establish boundaries on when electronic communication is acceptable during off-hours by setting up off-hour email windows or schedules when employees are available to respond.

Importantly, organisational expectations should be communicated clearly, Becker noted.

“If the nature of a job requires email availability, such expectations should be stated formally as a part of job responsibilities.”

Knowing these expectations upfront may reduce anxiety in employees and increase understanding from their family members, he said.

As for employees, they could consider practising mindfulness, which may help them to “be present” in family interactions, and help reduce conflict and improve relationship satisfaction, said Becker.

However, while mindfulness is within the employees’ control, email expectations are not, he added.

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Blue light from digital devices could accelerate blindness

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Washington, Aug 13 : Blue light from digital devices including smartphones could accelerate blindness, researchers have found.

According to a research by the University of Toledo in the US, exposure to blue light continuously might cause poisonous molecules to be generated in the eye’s light-sensitive cells and lead to macular degeneration, Xinhua news agency reported on Monday.

As one of the leading causes of blindness in the US, macular degeneration does not lead to total blindness, but can make daily activities difficult.

“It’s no secret that blue light harms our vision by damaging the eye’s retina. Our experiments explain how this happens, and we hope this leads to therapies that slow macular degeneration, such as a new kind of eye drop,” said Ajith Karunarathne, an assistant professor in the university’s department of chemistry and biochemistry.

Macular degeneration is caused by the death of photoreceptors, a kind of light-sensitive cells.

Photoreceptor cells need molecules called retinal to sense light and trigger signalling to the brain, enabling us to see.

“If you shine blue light on retinal, the retinal kills photoreceptor cells as the signalling molecule on the membrane dissolves,” said Kasun Ratnayake, a PhD student at the university who was involved in the study.

“Photoreceptor cells do not regenerate in the eye. When they’re dead, they’re dead for good,” Ratnayake added.

To protect eyes from blue light, researchers advise people to wear sunglasses which filter both UV and blue light outside and avoid using smartphones or tablets in the dark.

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