Coffee increases energy which spends minerals and nutrients quickly. Folks outside of #peatstr are often dehydrated and nutrient deficient. Can't have your cake and eat it too.
Long term, nutrient deficiency, especially when paired with seed oils, can degrade the nervous system, creating dysmotility and chronic constipation by way of dysregulating vagal tone and underproducing acetylcholine.
Most just need a bit of extra fluid with electrolytes and a good B vitamin. Folks with nervous system issues will need extra thiamine and extra choline, at least.