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Related Concept Videos

Signs of Puberty01:27

Signs of Puberty

605
Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
605

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Updated: Sep 9, 2025

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Blue Light Effect on Metabolic Changes in Induced Precocious Puberty in Rats.

Luciana-Mădălina Gherman1,2, Elena-Mihaela Jianu3, Ștefan Horia Roșian4,5

  • 1Experimental Centre, "Iuliu Haţieganu" University of Medicine and Pharmacy, Louis Pasteur, No. 6, 400349 Cluj-Napoca, Romania.

Biology
|September 4, 2025
PubMed
Summary
This summary is machine-generated.

Blue light from devices like phones and computers disrupts circadian rhythms, affecting puberty onset and causing metabolic changes in rats. This highlights potential health risks from modern artificial lighting.

Keywords:
blue lightcholesterolcircadian rhythmglucoseinsulinleptinprecocious pubertytriglyceride

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Area of Science:

  • Endocrinology
  • Environmental Health
  • Metabolic Research

Background:

  • Modern lifestyles involve constant exposure to artificial light, particularly blue light from electronic devices.
  • This exposure disrupts natural circadian rhythms, leading to significant metabolic alterations.
  • Understanding these effects is crucial for public health and well-being.

Purpose of the Study:

  • To investigate the impact of blue light exposure from various sources on puberty onset, hormonal, and biochemical parameters in male and female rats.
  • To compare the effects of blue light from mobile phones (MP), computer screens (PC), and LED lamps.
  • To assess the disruption of circadian rhythms and metabolic changes induced by artificial light.

Main Methods:

  • Four groups of rats were studied: control (normal light), MP, PC, and LED (blue light exposure).
  • Parameters assessed included body weight intake, estrous cycle cyclicity, and biochemical markers (ALT, AST, glucose, insulin).
  • Gender-specific effects and variations based on light source were analyzed.

Main Results:

  • Rats exposed to PC and LED light showed significantly lower body weight intake compared to controls.
  • All blue light sources interfered with the estrous cycle in female rats, with the LED group showing the most disrupted cycles.
  • Elevated ALT, AST, glucose, and insulin levels were observed in a gender- and light-source-specific manner.

Conclusions:

  • Prolonged blue light exposure from electronic devices induces significant metabolic disruptions in rats.
  • The source and type of blue light exposure can influence the severity and nature of metabolic changes.
  • Further research is warranted to elucidate the explicit pathways involved in these environmental stressor-induced disruptions.