缺鈣的人肌肉和神經興奮度會降不下來，從而導致難以入睡。

Calcium: One of the Main Sleep Nutrients in ‘Failure to Fall Asleep’

Calcium is a sedative mineral and its deficiency is associated with the inability to fall asleep and the classic ‘the brain just doesn’t shut off’ symptom.  Calcium deficiency sleep disturbance in kids and adults is quite common.   

 

https://nmrc.ca/insomnia-part-1-sleep-nutrients-falling-asleep/