Studies

The following research data is but a minute fraction of the research associated with the potential benefit of light for health. The wide range and variety of conditions makes one recognize that the miracle of light is essential to health.

ALCOHOL ADDICTION

• Darkness Induced Drinking Phenomenon

• Colder Weather and Fewer Sunlight Hours Increase Alcohol Consumption and Alcoholic Cirrhosis Worldwide

ALZHEIMER’S

• Light Therapy and Alzheimer’s Disease and Related Dementia: Past, Present, and Future

• Tailored light intervention improves measures of sleep, depression, and agitation in persons with Alzheimer’s and related dementia.

BACK PAIN

• Short-term effects of bright light therapy in adults with chronic nonspecific back pain.

BENEFITS OF SUNLIGHT

• Environmental Health Perspective: A Bright Spot for Human Health.

CANCER SURVIVORS SLEEP QUALITY

• The Effect of Systematic Light Exposure on Sleep in a Mixed Group of Fatigued Cancer Survivors.

COGNITIVE FUNCTION

• Effect of sunlight exposure on cognitive function among depressed and non-depressed participants.

 DEPRESSION (NONSEASONAL) / SAD / BIPOLAR DEPRESSION / Pregnancy

• Bright Light Treatment in Elderly Patients With Nonseasonal Major Depressive Disorder

• Efficacy of Bright Light (Treatment Combination) in Patients With Nonseasonal Major Depressive Disorder

• The efficacy of light therapy in the treatment of seasonal affective disorder: A meta-analysis of randomized controlled trials

• Adjunctive Bright Light Therapy for Bipolar Depression: A Randomized Double-Blind Placebo-Controlled Trial

• Rapid treatment response of suicidal symptoms to lithium, sleep deprivation, and light therapy (chronotherapeutics) in drug-resistant bipolar depression.

• Effects of bright light therapy for depression during pregnancy: A randomized, double-blind controlled trial.

• Effect of sunlight exposure on cognitive function among depressed and non-depressed participants in a cross-sectional study

IMMUNITY

•  Sunlight Offers Surprise Benefit – It Energizes Infection Fighting T Cells.

LENGTH OF HOSPITAL STAY

• Impact of Light on Outcomes in Healthcare Settings

• The Effects of Natural Daylight on Length of Hospital Stay

• Patients on Sunny Side Do Better After Surgery

• Sunlight Exposure Increased Covid-19 Recovery Rates

LIBIDO

• Light therapy as a treatment for sexual dysfunction; focus on testosterone levels.

LUNG INJURY

• Intense light protects against lung damage. Study says it stimulates proteins that can protect against acute lung injury.

MACULAR DEGENERATION

• Retinal damage induced by commercial light-emitting diodes (LEDs).

• Age-related retinal inflammation is reduced by 670 nm light via increased mitochondrial membrane potential..

MITOCHONDRIA AND ATP (Adenosine triphosphate)

• Recharging mitochondrial batteries in old eyes. Near infra-red increases ATP.

• Near-infrared light increases ATP, extends lifespan and improves mobility in agedDrosophila melanogaster.

PARKINSON’S SLEEP WAKE CYCLE SYMPTOMS

• Timed Light Therapy for Sleep and Daytime Sleepiness Associated With Parkinson Disease.

SCHOLASTIC PERFORMANCE

• Poor or inappropriate lighting in schools can adversely affect children’s health and their ability to learn..

STRESS / BURNOUT

• Burnout and light treatment..

ULTRAVIOLET LIGHT

• Sunlight and Vitamin D: Necessary for Public Health.

UNHEALTHY TEEN SLEEP CYCLES

• Lack of short-wavelength light during the school day delays dim light melatonin onset (DLMO) in middle school students.

VITALITY

• Daytime light exposure and feelings of vitality: Results of a field study during regular weekdays

• Bright light improves vitality and alleviates distress in healthy people..

WEIGHT LOSS

• Timing and Intensity of Light Correlate with Body Weight in Adults.