I mentioned it to my mom and she said she had noticed it too but thought it was from something else. So, I decided to do a little research and found some plausible explanations. Several posts suggested that a low-carb diet can cause dry mouth. On one post, it was mentioned what foods help and exacerbate these problems. Interestingly, paleo foods help dry mouth (walnuts, broccoli, kale), and non-paleo foods (grains, pizza, etc.) did not help. Here are simple, reasonable explanations that I found:
- Ketosis has a diuretic (increasing urine excretion) effect which, in turn, causes dry mouth.
- Water washes away saliva.
- Constantly drinking water makes your mouth rely on the constant inflow. When the inflow is interrupted, i.e. a meeting, presentation, empty water bottle, then it becomes dry.