In a study Professor Dale Nyholt and QUT Ph.D. researcher Rafiqul Islam, describe using large-scale genome-wide associations studies (GWAS) summary statistics to analyze hundreds of thousands of human genomes from headache and migraine sufferers and non-sufferers. Professor Nyholt said the co-occurrence of migraine and glycemic (blood sugar levels) traits had been reported in observational epidemiological studies but it was unknown how they were genetically linked. "About 15% of the global population is affected by migraine, and as far back as 1935, migraine was described as a 'glycemic headache,'" Professor Nyholt said. "Glycemic traits such as insulin resistance, hyperinsulinemia (too much...