A bee's natural food is its own honey, which contains compounds like p-coumaric acid that appear to help detoxify and strengthen a bee's immunity to disease...
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The widespread apicultural use of honey substitutes, including high-fructose corn syrup, may thus compromise the ability of honey bees to cope with pesticides and pathogens and contribute to colony losses.
We tried to mimic commercial beekeepers’ practices. I believe one reason that commercial beekeepers are experiencing the most severe colony collapse disorder is because of the link between high-fructose corn syrup and neonicotinoids.