Odd side affect?

When getting my IUD put in my doctor warned me about something most women experience with this type. Most reported an increase in appetite/weight gain and said they were linked(well duh I guess right?). She said if I expect the appetite increase I shouldn't gain weight and be alright BUT this has been a blessing in disguise. Lately I have been feeling very depressed and haven't been eating regularly due to not feeling hungry at all. But now I have a sort of notification when I need to to eat and thanks to my birth control I HAVE to take care of myself more or I will feel sick which leads to me having more energy to burn which leads to me getting out more. My depression seems to be getting better! Go science/empowering women in their life choices!