shellig,
i had the same experience after my first week on induction last year and it definitely WAS caused by the change in my diet. doreen is right though that it depends if the dizziness gets worse or slightly better when you lie down. it's not clear from your post which is happening. in my case, i would feel a bit better when lying down. when standing it seemed like the whole world was spinning around me. i think this happened because i wasn't eating enough and i was sweating more than usual - that week i worked out every day, which was unusual for me and we also had a heat wave (the temperatures increasd from about 65 degrees the week before to 90 degrees!). i had an electrolye imbalance. when i started eating more, increased my salt intake and started taking potassium and magneium supplements, the problem went away.
anniemc