Any sources to studies done on the effects of light at different Kelvins? I'm really surprised as I would have expected LED light with more blue and looking na

Any sources to studies done on the effects of light at different Kelvins? I'm really surprised as I would have expected LED light with more blue and looking natural to be preferable to orange Sodium Vapor lights. The sun which is our main light source puts out a wide spectrum. I'm surprised the lower wattage LED street lamps could cause actual health problems. I'm usually in bed during sleeping hours and not really exposed to the new blue LED street lights installed recently in my neighborhood though. As someone who has always been interested in Astronomy I do worry about light pollution. Having worked at Observatories I do know that only red light is used due to it's low impact on light pollution.