Coffee question

Can someone straighten me out on this? Decaf coffee can be counted as water but caffinated coffee can't because it makes you retain water. Do I have that right? Cheryl

Caffene makes you lose water and salts - as it is a diuretic - so you have it incorrect. I have my 2 cups of regular coffee every morning. According to my surgeon and dietician as long as my urine is light yellow and odorless I am taking in as much fluids as I need - so I don't bother to count ounces. Hope this helps. Louise