How many studies support Morning Light?

Evidence in this dataset relates mainly to the broader role of light exposure and circadian rhythms in health, including reviews on circadian regulation of metabolism and cardiovascular function, plus more specific research on evening light exposure (e-readers) impairing sleep and light therapy improving insomnia. That's backed by 6 published studies in Vitaebase's database, including 1 meta-analysis, the most recent from 2026 -- a modest but real research base.