150 Deadlifts, Plus A Question For The Educated Crowd

In slightly under 30 minutes I did:

sumo deads, 50x95 lbs
air squats, 50xbw
RDL. 50x75
Bulgarian split squats, 50xbw
snatch grip deads, 50x65
1-leg squats, 50xBW

Then I taught spinning.

Now I am eating the post-workout meal of the righteous.

Which brings me to my question: Is it true that sugar substitutes such as aspartame and Splenda can cause weight gain by triggering negative hormonal responses in your body? I recently read somewhere online that these artificial sweeteners increase production of fat storing hormones and cause cravings for sweets and refined carbs. Is that correct? Can anyone elaborate?