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Cacao tegen diabetes.*
Uit een Japanse studie blijkt dat cacao ook goed is tegen het ontstaan van en bij diabetes type 2.
Cacao of pure chocolade met veel cacao is volgens verschillende studies goed voor hart- en bloedvaten. Uit deze studie, weliswaar met muizen, blijkt dat voeding verrijkt met cacao, rijk aan bioactieve stoffen, de bloedsuikerwaarden duidelijk doet verminderen. Hoe meer cacao in de voeding hoe beter de bloedsuikerwaarden. Vergelijkbaar voor een mens zou een optimale waarde betekenen het eten van bijv. 100 gram pure chocolade (min. 70-80% cacao) met geen of zo min mogelijk suikers omdat anders alle voordelen weer teniet gedaan worden.

Dietary supplementation with cacao liquor proanthocyanidins prevents elevation of blood glucose levels in diabetic obese mice
Makoto Tomaru, D.D.S., Hirohisa Takano, M.D., Ph.D., Naomi Osakabe, Ph.D., Akiko Yasuda, M.S., Ken-ichiro Inoue, M.D., Ph.D., Rie Yanagisawa, Ph.D., Tsuneto Ohwatari, D.D.S., Ph.D., Hiroshi Uematsu, D.D.S., Ph.D. 
Abstract
Objective 
Effective approaches should be established to prevent the onset of type 2 diabetes mellitus, which has been increasing in developed countries. The present study examined whether dietary supplementation with cacao liquor proanthocyanidins (CLPr) could prevent elevation of blood glucose levels in mice with diabetes mellitus and obesity.
Methods 
C57BL/KsJ-db/db (db/db) diabetic obese mice and C57BL/KsJ-db/+m (db/+m) control mice were fed a diet containing 0% w/w CLPr (0% CLPr), 0.5% w/w CLPr (0.5% CLPr), or 1.0% w/w CLPr (1.0% CLPr) from age 3 wk to age 6 wk. Levels of blood glucose were measured at 4 and 5 wk of age. The animals were sacrificed and the levels of blood glucose and fructosamine were measured at 6 wk of age.
Results 
The levels of blood glucose and fructosamine were higher in the db/db mice than in the db/+m mice fed a diet containing 0%, 0.5%, or 1.0% CLPr. In the db/+m mice, the levels of blood glucose or fructosamine were not significantly different across animals fed 0% CLPr, 0.5% CLPr, and 1.0% CLPr. In the db/db mice, however, a diet containing 0.5% or 1.0% CLPr decreased the levels of blood glucose and fructosamine compared with that containing 0% CLPr without significant effects on body weights or food consumption.
Conclusion 
Dietary supplementation with CLPr can dose-dependently prevent the development of hyperglycemia in diabetic obese mice. The dietary intake of food or drinks produced from cacao beans might be beneficial in preventing the onset of type 2 diabetes mellitus.  (Augustus 2007)

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