Tag Archive for 'Blue light'

Yang et al. provide new insights into the mechanisms by which blue light interferes with vital metabolic pathways that are conserved between fly and human cells. Image credit: Pexels.

Excessive Blue Light Leads to Accelerated Aging in Fruit Flies, Research Finds

Aug 31, 2022 by News Staff

Blue light is becoming increasingly prevalent in artificial illumination, raising concerns about its potential health hazard to humans. In a new study,...

Song et al. show that damaging effects of blue light at the organismal level are strongly age dependent and are associated with reduced activity of specific components of energy-producing pathways in mitochondria. Image credit: Pexels.

Damaging Effects of Blue Light Exposure Worsen with Age, New Research Suggests

Jul 28, 2022 by News Staff

Blue light is a predominant component of light emitting devices, which are increasingly present in our environment. There is already accumulating evidence...

Guarana et al. investigated the effects of blue-light filtration on broad attitudinal and behavioral outcomes, i.e. work engagement, organizational citizenship behavior, and counterproductive work behavior. Image credit: Alexandr Borecký.

Study: Blue-Light Filtering Glasses Improve Sleep Quantity and Quality, Workday Productivity

Oct 15, 2020 by News Staff

Wearing blue-light filtering glasses before sleeping creates a form of physiologic darkness, thus improving both sleep quantity and quality, and is related...

White fat cells (adipocytes) activate the lipolysis pathway to produce the free fatty acids that are used as heating fuel by brown adipose tissue. Nayak et al show that OPN3 is required for blue-light-enhanced activation of the lipolysis pathway. This explains the low body temperature of OPN3 mutant mice. Image credit: Nayak et al, doi: 10.1016/j.celrep.2019.12.043.

Fat Cells Can Sense Light, Animal Study Shows

Jan 28, 2020 by News Staff

Light exposure regulates how two kinds of fat cells (adipocytes) work together to produce the raw materials that all other cells use for energy, according...

Changes in the spectral content of ambient light are detectable to most mammals as a blue shift in the color of twilight. Mouland et al show that these blue colors suppress circadian responses to light, supporting robust circadian entrainment when environmental conditions render light intensity a weak or unreliable indicator of time of day. Image credit: Johannes Plenio.

Blue Light is Less Disruptive to Sleep than Previously Thought

Dec 25, 2019 by News Staff

Using dim, cooler lights in the evening and warmer lights in the day may be more beneficial to our health, according to a new study in mice from University...

Nighttime exposure to blue light causes glucose intolerance in diurnal rodents, with a stronger effect in males when they were fed high caloric diet. Image credit: Nicholas Robb.

Nighttime Exposure to Blue Light Increases Sugar Consumption, Animal Study Finds

Jul 10, 2019 by News Staff

Nocturnal exposure to light containing short wavelength emissions (450-500 nm) — the kind of light produced by the screens of many devices —...

Whole body irradiation with visible blue light improves blood pressure. Image credit: Daniel Reche.

Blue Light Exposure Reduces Systolic Blood Pressure, Study Shows

Nov 12, 2018 by News Staff

Exposure to blue light significantly decreases systolic blood pressure and increases heart rate, lowering the risk of developing cardiovascular disease,...

Blue light may increase hunger. Image credit: Alexofdodd / CC BY-SA 3.0.

Blue Light Exposure before Evening Meal Linked to Increased Hunger

Jun 17, 2014 by News Staff

Blue-enriched light exposure immediately before the evening meal may increase hunger, according to a new study published in the journal Sleep (abstract...