Lastly, drinks rich in apple and blackcurrant polyphenols had a diabetes-preventing effect, by lowering postprandial plasma glucose levels, C-peptide, GIP, and insulin in 25 healthy men and women, 30 min after the daily dose of 1200 mg apple polyphenols or 600 mg apple polyphenols + 600 mg blackcurrant anthocyanins drinks. The gene discussed is INS; the disease is diabetes mellitus.