Armed with three years of grocery shopping data, researchers found that total sugar sales are down by almost 20 percent, driven largely by falling soda purchases. This isn't the right definition of success. The first minimal requirement for this to be a successful initiative is that the community lost weight overall. Or even gained weight, but more slowly than other communities. If they could prove that it would be a…
To be honest your post sounds like it's coming straight out of the sugar industry PR book. 1. Increase burden of scientific evidence/cast scientific evidence in doubt by saying it's not conclusive enough 2. Assert that reducing sugar is not working because people will just get their calorie input otherwise. 3. Blame fat/daemonize fat, that's what the sugar industry has done very successfully over the last decades.
Even though zero calorie soda does not directly contain any energy, it may mess up our feelings of hunger and make us more hungry. [0] So far, scientific studies indicate that people who switch from sugary soda to zero calorie drinks do not lose weight [1].
Feelings of hunger and satiety are complicated, driven by hormones and only somewhat correlated with total energy intake.
[0] https://www.medicalnewstoday.com/articles/medical-myths-all-...
[1] https://www.health.harvard.edu/blog/zero-weight-loss-from-ze...
Edit: downvoted for what? Linking to Harvard health blog? If zero calorie soda had a slimming effect, we would have seen it a long ago, it is not exactly a new invention.