>>4231477Yeah, my friend had a vitamin D deficiency, which if I remember correctly is what allows calcium to bind to your bones etc.
There's all sorts of different reasons for shit like that happening, do you get much exercise?
>>4231506t. brainlet
>>4231509Heh, possibly. It's more likely that it's something else though, like a lack of something in your diet or an inability to absorb certain nutrients or some other such thing. Shit like that can lead to lots of different side effects depending on what's lacking