I've tried some hershey's all natural cocoa powder in hot water (plain, or add grass fed butter), and each time, it's given me some nasty watery bowel movements.

Is this due to a magnesium effect or dosage effect, and if it is, does utilizing cocoa powder in other ways mitigate this effect?

I do love some chocolate/hot chocolate every once in a while, sans gross bowels.

UPDATE:

Great answers. Lots of answers. I stopped using cocoa powder for a while now, and no digestive distress has occurred. However, life has gotten slightly boring...I may start again. Re-updates to come.

I've tried some hershey's all natural cocoa powder in hot water (plain, or add grass fed butter), and each time, it's given me some nasty watery bowel movements.

Is this due to a magnesium effect or dosage effect, and if it is, does utilizing cocoa powder in other ways mitigate this effect?

I do love some chocolate/hot chocolate every once in a while, sans gross bowels.