An ad for a supplement called "Zuccarin" in our local paper included a variety of claims:

"The slimming effect of stable blood sugar levels:

"A recent italian study of Zuccarin showned the impressive weight loss results of blocking carbohydrates. The diet group on Zuccarin lost substantially more weight than the placebo group and their waist shrunk more as well."

"Zuccarin...mullberry leaf supplementation...the tablets naturally block carbohydrates from being digested into simple sugar. This helps your waistline and your blood sugar levels."

"Test yourself: Sugar problem:

  • Lack of energy
  • Difficulty losing weight
  • Sugar cravings
  • Feeling tired and irritated

These are some clues that your blood sugar may be unstable or too high. Try Zuccarin..."

Impressively, they cite:

Da Villa, G., et al. "White mulberry supplementation as adjuvant treatment of obesity." Journal of biological regulators and homeostatic agents 28.1 (2014): 141-145.

I couldn't access the full text, but I found this snippet, which sounds pretty impressive - I'm not qualified to know how good their methodology was. There appear to be several studies on similar subjects.

Are the claims posed accurate - is blood sugar a mechanism for the symptoms described, and can "White Mullberry" produce the effects claimed?

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