Dr Steven Lin - We are creatures dependent on the sun, as humans are programmed to be outdoors while the sun is shining and home in bed at night. The brain uses
![Frontiers | Effect of Melatonin for Regulating Mesenchymal Stromal Cells and Derived Extracellular Vesicles Frontiers | Effect of Melatonin for Regulating Mesenchymal Stromal Cells and Derived Extracellular Vesicles](https://www.frontiersin.org/files/Articles/717913/fcell-09-717913-HTML/image_m/fcell-09-717913-g001.jpg)
Frontiers | Effect of Melatonin for Regulating Mesenchymal Stromal Cells and Derived Extracellular Vesicles
![The circadian rhythm and sleep-wake cycle: how exposure to sunlight regulates melatonin secretion in the human brain and body processes Stock Vector Image & Art - Alamy The circadian rhythm and sleep-wake cycle: how exposure to sunlight regulates melatonin secretion in the human brain and body processes Stock Vector Image & Art - Alamy](https://c8.alamy.com/comp/2BTNXM3/the-circadian-rhythm-and-sleep-wake-cycle-how-exposure-to-sunlight-regulates-melatonin-secretion-in-the-human-brain-and-body-processes-2BTNXM3.jpg)
The circadian rhythm and sleep-wake cycle: how exposure to sunlight regulates melatonin secretion in the human brain and body processes Stock Vector Image & Art - Alamy
![Therapeutic potential of melatonin and its analogs in Parkinson's disease: focus on sleep and neuroprotection - Venkatramanujam Srinivasan, Daniel P. Cardinali, Uddanapalli S. Srinivasan, Charanjit Kaur, Gregory M. Brown, D. Warren Spence, Therapeutic potential of melatonin and its analogs in Parkinson's disease: focus on sleep and neuroprotection - Venkatramanujam Srinivasan, Daniel P. Cardinali, Uddanapalli S. Srinivasan, Charanjit Kaur, Gregory M. Brown, D. Warren Spence,](https://journals.sagepub.com/cms/10.1177/1756285611406166/asset/images/large/10.1177_1756285611406166-fig1.jpeg)