"Everything in moderation, including moderation." - Oscar Wilde ## Light “Some potential risks of light therapy include premature aging of the skin and an increased possibility for skin cancer development (in later life) Eye Strain and temporary headaches caused by the light are also often reported, although these symptoms do not seem to indicate any permanent injury. Blue, red, white, or amber LEDs may cause headaches or trigger migraine in some people. People who have photophobia may be particularly sensitive. Green LED light may be the only color that does not cause or worsen headaches. It may even help reduce migraine and headache symptoms. Side effects when using photodynamic therapy differ depending upon the type of photosensitizer used,with methyl aminolevulinate tending to produce the most severe pain during treatment and, a higher chance, potentially of subsequent hyperpigmentation. Patients sometimes also experience a flare-up of acne that is transitory in nature. Some reactions triggered by photosensitivity involve redness, stinging, and burning; however,these reactions usually subside about three or four weeks after the treatment. Hives and eczema can appear at the area of contact within a few hours after exposure to the cream These can be possible effects for a prolonged period of time. - Premature aging of skin - Increased possibility for skin cancer development (in later life,[red light therapy]) - Eyestrain and discomfort - Potential Retinal Damage (If looking directly at light source) - Dependency (excessive use during evening hours will cause our bodies to continue the production of melanopsin, making it harder to fall asleep naturally)  This is a must read: [LED Lighting Flicker and Potential Health Concerns: IEEE Standard PAR1789 Update](https://ece.northeastern.edu/groups/power/lehman/Publications/Pub2010/2010_9_Wilkins.pdf) ## Vibratory Exposure to vibration, especially long term, leads basically to two health issues: damage to body organs due to whole-body vibration, which is a function of high-intensity vibration; and damage to blood vessels, body tissues, and nervous system to the fingers, hands, and arms due to segmental vibration, which is a function of high-frequency vibration. It was  reported the development of hand-arm vibration syndrome in a 15 year old boy who presented with a two year history of painful hands. His hands became white and swollen when exposed to the cold and subsequently red and painful on warming. He had no clinical or laboratory features of an underlying connective tissue disorder. The onset of his symptoms was preceded by the prolonged use of a widely available domestic computer game (Sony Playstation). He spent up to seven hours a day playing this game. He particularly enjoyed driving games using the vibration mode on the hand held control device (“rumble board”). He described the sensation of realism associated with the device vibrating when the on-screen vehicle came “off road.” [Investigations of hand transmitted vibrations and associated health risks in load haul dumper operators based on different components of a work cycle - ScienceDirect](https://www.sciencedirect.com/science/article/abs/pii/S2214785323025208#:~:text=Hand%20transmitted%20vibrations%20are%20those,4%5D%2C%20%5B5%5D.) His presentation is typical of the hand-arm vibration syndrome—vibration white finger as it was previously known—described in association with occupational exposure to vibration. This syndrome came into force as an industrial disease in April 1985. As a result sufferers were able to claim compensation and disability benefits. The prolonged use of hand held vibratory tools such as gas powered chain saws and pneumatic tools has been implicated in the etiology of this syndrome. The increasing recognition of the problem and the subsequent lawsuits that have arisen have led to the use of antivibratory tools and changes in working practice aimed at prevention. There are limited published references on the hand-arm vibration syndrome in children. Injuries associated with the use of computers or their accessories, however, have been described, including joystick digit, mouse elbow, and a central palmar blister following rotation of the central console joystick of a Nintendo game in the palm of the hand.No cases of the hand-arm vibration syndrome have previously been reported in association with prolonged use of vibrating handheld computer devices. [Human exposure to vibration, a case of study of video game controllers](https://www.researchgate.net/publication/357737211_Human_exposure_to_vibration_a_case_of_study_of_video_game_controllers) Children spend long periods playing domestic computer games. The seven hours a day that our patient reported is excessive and exceeds the manufacturer's recommendation, but we must assume that this is not an uncommon occurrence. With increasing numbers of children playing these devices, there should be consideration for statutory health warnings to advise users and parents. The potential for developing the hand-arm vibration syndrome should be considered, although more evidence of its occurrence in this context is required.  [Hand-arm vibration syndrome may be associated with prolonged use of vibrating computer games - PMC](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1122219/) ## Auditory Prolonged exposure to sounds at or above 85 Decibels can cause hearing loss over time. Binaural beat proponents suggest that while brain entrainment is a healing process, it has the potential for ‘stirring up’ negative emotions as entrainment inherently moves these feelings in our body.  POTENTIAL DANGERS OF BINAURAL BEATS NIHL as per Pathways Editor, Frank Musiek Ph.D, one of the dangers of consuming binaural beats for a prolonged time is that they can, ‘put listeners at risk for noise-induced hearing loss” which is an auditory phenomenon which can be caused by significantly loud bursts of sound that can either rupture the eardrum or damage bones in the middle part of the ear. NIHL can occur to anyone at any age, and can be both permanent and temporary. Noise Induced hearing loss can be caused by loud sounds over a long period of time. ["Pathways: The Dangers of eDosing with Binaural Beats" by Frank Musiek, Samuel R. Atcherson et al.](https://nsuworks.nova.edu/hpd_aud_facarticles/95/) Kids (0-12) and Binaural Beats To ensure best safety, experts suggest following proper guidelines to maximize the advantages. Between the ages of 0 and 12, as discussed in the Binaural Beats research paper It is recommended that besides listening to delta and theta waves during rest and sleep, listening to sessions of binaural beats for a few hours at most. In many cases, the effects of binaural beats tend to taper off after a few hours. the International Telecommunication Union in collaboration with WHO, which has deemed 80 decibels — the measurement of sound intensity — over 40 hours per week as the maximum safe exposure.  [Safe Listening - Devices and Systems - A WHO-ITU standard](https://www.itu.int/en/ITU-D/Digital-Inclusion/Documents/Safe_listening_standard.pdf) [[Vibration health risks¶]] [[ [[Hyperpigmentation risk¶]] [[Antivibratory tools¶]] [[]]