A study by the Disaster Feeding Alliance suggests that seaweed, particularly the nutrient-rich red seaweed Gracilaria tikvahiae, could serve as a significant food source in the aftermath of a nuclear war. The research indicates that seaweed could meet 45% of global food demand within nine months of increased production, although it could only make up 15% of the human diet due to its high iodine content. The team also noted that any toxic substances absorbed by seaweed could be reduced to safe levels through specific post-harvest and pre-consumption treatments.