Light from smartphones may lessen your sleep quality

Agencies
July 30, 2017

Houston, Jul 29: Artificial light emitted from digital devices such smartphones and tablets could reduce the quality of your sleep, a study has warned.

The largest source of blue light is sunlight, but it is also found in most LED-based devices. Blue light boosts alertness and regulates our internal body clock, or circadian rhythm, that tells our bodies when to sleep.

This artificial light activates photoreceptors called intrinsically photosensitive retinal ganglion cells (ipRGCs), which suppresses melatonin, the hormone that signals your body that it is time to sleep.

"The most important takeaway is that blue light at night time really does decrease sleep quality. Sleep is very important for the regeneration of many functions in our body," said Lisa Ostrin, assistant professor at University of Houston in the US.

In the study, participants, aged between 17 and 42, wore short wavelength-blocking glasses three hours before bedtime for two weeks, while still performing their nightly digital routine.

Results showed about a 58 per cent increase in their night time melatonin levels.

"Those levels are even higher than increases from over- the-counter melatonin supplements," said Ostrin, who led the study published in Ophthalmic & Physiological Optics.

Wearing activity and sleep monitors 24 hours a day, the 22 study participants also reported sleeping better, falling asleep faster, and even increased their sleep duration by 24 minutes a night, according to Ostrin.

Ostrin recommends limiting screen time, applying screen filters, wearing computer glasses that block blue light, or use anti-reflective lenses to offset the effects of artificial light at nighttime.

Some devices even include night mode settings that limit blue light exposure.

"By using blue blocking glasses we are decreasing input to the photoreceptors, so we can improve sleep and still continue to use our devices.

That is nice, because we can still be productive at night," Ostrin added.

 

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News Network
December 2,2025

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Bengaluru: 'Nati koli saaru' (country chicken curry) considered one of Chief Minister Siddaramaiah’s favourites along with steaming hot idlis was on the breakfast menu at Deputy CM D K Shivakumar’s residence on Tuesday, according to official sources.

The spread also included 'nati koli' fry, vada and pongal, among other items, they said.

In an apparent show of unity, Siddaramaiah visited Shivakumar’s residence for breakfast, just days after the two leaders shared a meal amid a simmering power tussle in the state Congress.

Siddaramaiah drove to the Deputy CM’s residence in Sadashivanagar, where he was received by Shivakumar and his brother D K Suresh, who is a former Congress MP.

Suresh and Kunigal MLA H D Ranganath, a relative of Shivakumar, joined them for breakfast, which featured a mix of vegetarian and non-vegetarian dishes.

Speaking to reporters later, Siddaramaiah said Shivakumar had invited him during his visit to the CM’s residence for breakfast on Saturday.

Asked about the difference between the two meals, the chief minister said, "At his (Shivakumar’s) house it was non-veg, while at my house it was veg. He is a vegetarian, I am a non-vegetarian. I had not prepared non-veg. I told DK to get chicken from the village as you won’t get the original in Bengaluru."

Shivakumar said he had initially invited Siddaramaiah to his residence, but the CM had suggested visiting his place first and reciprocating later. "It was a vegetarian breakfast at the CM’s house on Saturday," he noted.

"Today, I invited him (the CM) to my house. He enjoyed the breakfast, which had his Mysuru taste," Shivakumar added. At this point, Siddaramaiah remarked that Shivakumar’s wife is also from Mysuru.

Saturday’s breakfast at Siddaramaiah’s official residence, held as part of efforts by the Congress high command to ease tensions in the leadership dispute between the two, reportedly included idlis and sambar, according to official sources.

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News Network
November 22,2025

Mangaluru: Police Commissioner Sudheer Kumar Reddy C H has warned of strict action against individuals spreading rumours and attempting to create insecurity within the Muslim community and fuel hatred between Hindus and Muslims through social media.

Referring to a recent social media post alleging that police personnel had entered a masjid premises to check whether beef was being cooked, the commissioner said miscreants were attempting to push their communal agenda. 

“A group of people, both from Mangaluru and abroad, are trying hard to spread rumours. For the past 10 days, they have been attempting to rake up old issues, highlight routine matters as controversies, or fabricate news altogether,” he said.

He reiterated that any such attempts to disturb communal harmony would invite legal action. “Cases will be registered and the accused will be brought to book,” he stated.

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News Network
November 24,2025

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Israeli forces have pushed over the Syrian frontier, erecting a checkpoint and stopping vehicles in the southwestern city of Quneitra, in yet another breach of the Arab country’s sovereignty.

The violation took place on Sunday, when the troops made their way across the border, setting up the outpost near the Ain al-Bayda junction in northern Quneitra, Syrian outlets reported.

According to the al-Ikhbariya paper, an Israeli detachment positioned itself at the junction, halting cars and conducting searches.

The Syrian Arab News Agency (SANA) reported that three Israeli military vehicles then moved further into the northern countryside, deploying between the town of Jubata al-Khashab and the villages of Ofaniya and Ain al-Bayda. The agency added that a separate Israeli unit mounted a new incursion in the central region, approaching the villages of Umm Batina and al-Ajraf.

Residents said such activities have surged in recent months, pointing to Israeli advances onto farmland, leveling of extensive forested areas, arrests, and spread of mobile checkpoints.

The Israeli regime began markedly increasing its military aggression against Syria last year.

The escalation coincided with increasingly ferocious onslaughts throughout the country by the so-called Hay'at Tahrir al-Sham (HTS) Takfiri terrorist group, which the government of President Bashar al-Assad had confined to northwestern Syria. The HTS, however, managed to overthrow the government as the Israeli attacks would pummel the country’s civilian and defensive infrastructure.

Various reports have shown that, during the escalation, the regime conducted more than 1,000 airstrikes on the Syrian territory and over 400 ground raids into the south.

Following the collapse of the Assad government, Tel Aviv also widened its grip over the occupied Golan Heights by taking control of a demilitarized buffer zone, in defiance of a 1974 Disengagement Agreement. Earlier this month, senior Israeli officials, including Prime Minister Benjamin Netanyahu, visited the buffer zone, prompting expressions of alarm on the part of the United Nations.

The United States, the regime’s biggest ally, has, meanwhile, been fraternizing the HTS head Abu Mohammed al-Jolani amid the widely reported prospect of rapprochement with Tel Aviv.

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