When iOS 7 was released, there were actually news reports of people getting disoriented and sick due the motion of the parallax effect, along with the speedy animations when opening and closing apps and folders.
Reducing motion in your Accessibility settings can help calm the parallax effect a bit, and it also changes those nauseating speedy animations to a calm fade in and fade out. However, I don't like the fade effect either. Luckily, there's another option, but you'll need to jailbreak first.
This jailbreak tweak will actually remove animations completely, helping those few dizzy... more