Start off with the fact that most people are borderline dehydrated about half the time, and then encourage them not to take in any extra calories, or engage in “treats” or social eating and drinking, and you have a fairly good chance of getting your electrolytes out of whack. If you give up sodas, coffee, and such, and you reduce your food consumption, you are going to greatly reduce your bodies water intake. So, drink more water.
How much more water is really not anywhere near as well researched as it is well recommended. You do need some extra water if you switch over to a catabolic metabolism. But you really don’t need buckets of water. Hard numbers are really difficult to pin down. It seems to me to be more a matter of the dietitian or doctor’s opinion than any controlled study results.
However, it would take literally several gallons of water daily, to be detrimental to most healthy people. So, on the whole the “drink more water” camp is on safe ground, and no increase in water at all is much more likely to give you trouble. A glass of water every time you would have been eating or taking something more caloric is ritualistically useful, and unlikely to do you harm. Don’t replace it with sodas, or tea, or coffee, though. That will give you problems. If you decrease your total diet, you should decrease your tea/coffee/soda consumption by a similar proportion.
Moderation. Moderation. Moderation. Plan a change in eating habits that can become a lifetime habit. Not a starvation diet, or a single food type diet. Add exercise in an increasing, but non-stressful schedule. The combined regime should cover at least as long a time to moderate your weight as it took to reach your current level of overweight. If that was decades, then your diet/exercise plan needs to be decades long too. Not encouraging words, but really true ones.
Love who you are. You can still change details of that, but you really need to care about yourself, and for yourself to make the best of who you are.
Tris (who is still fat, but doesn’t care nearly as much, anymore)