[JPKab]

I take cold showers pretty regularly. Living in Colorado, my tap water is very cold, since it mainly comes from reservoirs filled with snow-melt runoff.

The question though is can this impact abdominal fat or not.

[drjasonharrison]

Look into Ray Cronise's blog. There is a duration x temperature effect that is easier to increase a higher temperatures for longer periods of time.

[coldtea]

Or look into actual scientific studies on the issue, as opposed to the latest X fad person of the day?

Even if they used to be "ex scientists" themselves (lots of people that oversell some cure without verification usually are -- Heck, Linus Pauling had 2 Nobels).