Melatonin

This is a pilot study to examine the effects of melatonin on the sleep patterns of critically ill patients. Patients will have their sleep patterns measured with a device attached to their head with a headband then be given a dose of melatonin. Their participation in the study will last two days.

This study aims to compare the efficacy of using Melatonin versus Pregabalin on postoperative pain and anxiety after spine surgeries.

This study aims to assess the cardioprotective effect of melatonin and vitamin D in breast cancer patients who receive doxorubicin.

The aim of this project is to evaluate the effect of a dynamic light in order to improve the circadian rhythm, provide a better sleep and well-being, and in the long run an improved recovery. The primary question is whether dynamic artificial light with circadian stimulus can affect the circadian rhythm. The secondary question is whether this also provides better sleep and well-being. The group that is particularly interesting to study is a geriatric population that is more sensitive to circadian rhythm disorders, sleep disorders and confusion in connection with hospitalization and that can be of particular benefit from this intervention.

The goal of this clinical trial is to learn if light can enhance the feeling of well-being and sleep quality in Radiographers. It will also find out if there is an optimal recipe for light. The main questions it aims to answer are: * Will alertness, energy levels, and sleep quality increase in radiographers when the lighting is differed? * What light recipe is the most beneficial for the personnel? Researchers will compare no enhanced light environment to different enhanced light environment to see if the enhanced light is beneficial for radiographers. Participants will: * Will work in an enhanced light environment or a non-enhanced light environment * Answer surveys * Take saliva sample

The goal of this clinical trial is to learn if oral melatonin can enhance visual acuity and central macular thickness in central serous chorioretinopathy (CSCR) in adults. The main questions it aims to answer are: 1. How does melatonin affect central macula thickness in CSCR? 2. How does melatonin affect visual acuity in CSCR? Researchers will compare placebo (a look-like substance that contains no drug) to see if melatonin works to treat CSCR. Participants will: 1. Take melatonin or placebo twice a day for one month 2. Visit the clinic after finishing a course of treatment, and 1 and 3 months after that for visual acuity assessment and tests 3. Keep a diary of their symptoms

The goal of this clinical trial is to explore and verify the preventive effects of melatonin on the progression of Alzheimer's disease. The study aims to analyze the changes in blood biomarkers (phosphorylated tau, glial fibrillary acidic protein, neurofilament chain), various sleep-related subjective report questionnaire scores, physical performance, cognitive function scores and cerebellar volume change after three months of melatonin administration in patients with Alzheimer's-type mild cognitive impairment (MCI) accompanied by insomnia. The main questions it aims to answer are: 1. Does melatonin administration alter the levels of blood biomarkers associated with Alzheimer's disease? 2. What changes occur in sleep-related subjective report questionnaire scores and cognitive function scores following melatonin administration? 3. Does melatonin administration effect on physical performance? 4. Is there any relations between cognitive decline, phsycal performance and cerebellar volume change? We will compare the data collected before and after melatonin administration to determine its preventive effects on Alzheimer's disease progression. Participants Will: 1. Take melatonin every day for 3 months and Complete sleep-related subjective report questionnaires, neuropsychological assessments and physical performance test 2. Visit the clinic at the initial visit and after 3 months for checkups and tests. 3. Complete sleep-related subjective report questionnaires and neuropsychological assessments and physical performance test 4. Provide blood samples for biomarker analysis.

This study aimed to investigate the prevalence and clinical significance of melatonin phase delay in children with new onset and progressive idiopathic scoliosis (IS).