Nobody has an answer to this.  It could be hereditary or a product of a toxic environment.  Lesions on the brain and spine that block the messages the brain sends out to the body.  Many people never know that they had it.  Many elderly people who have died...after autopsy were discovered to have had MS.  It affects everyone who has it differently...

that's just to let you know that it's working and nothings wrong...If there's a problem it will blink red and or sound an alarm.

I think Facebook's server is overloaded...many things have been slowing on there as of late!

You can live without it..kinda like an appendix