During the follow-up period, more than 17 per cent of patients experienced recurrence of their cancer, and 42 patients died from it. Another 70 participants died from other causes, according to the study published in the International Journal of Cancer.
Associations among carbohydrate intake and patient outcomes differed by cancer type and stage, Arthur said.
Higher mortality rates were found among people with oral cavity cancer who consumed the greatest amounts of total carbohydrates, total sugars and simple carbohydrates, but the researchers found no such associations among people who had oropharyngeal cancers.
Likewise, high carbohydrate consumption and glycemic load were significantly associated with increased risk of mortality from any cause among people with cancers in stages 1 to 3, but not in patients with stage 4 cancers.