Interactions between individual vitamins, minerals & trace elements can have a significant effect on their absorption and bioavailability and in some cases they may lead to dangerous deficiencies and health problems. For instance, regular intake of supplemental vitamin D will gradually lead to magnesium deficiency with its consequences that initially manifest themselves in the form of sleep problems. For this reason all vitamin D users should be encouraged to take also supplemental magnesium (200mg twice daily) to prevent its deficiency and ensure proper conversion of vitamin D into its active form in kidneys. Below there are many similar examples of various interactions that can be easily solved.
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