[Collective intoxication with "mad honey" on Reunion Island]

Area of Science:

• Toxicology
• Botany
• Food Safety

Context:

• Collective intoxication event involving "mad honey" on Reunion Island in 2008.
• Patients exhibited symptoms consistent with grayanotoxin poisoning, including faintness, bradycardia, hypotension, and dizziness.
• The honey was sourced from hives near abundant Agauria salicifolia, an endemic plant known to contain grayanotoxins.

Purpose:

• To investigate the cause of a collective intoxication incident.
• To identify the source of grayanotoxins in the consumed honey.
• To establish a link between the honey, the plant, and the observed symptoms.

Summary:

• A group of individuals experienced intoxication after consuming "mad honey" on Reunion Island.
• Clinical presentation included bradycardia, hypotension, and dizziness, indicative of grayanotoxin ingestion.
• A survey identified Agauria salicifolia, a grayanotoxin-rich plant, near the honey collection sites, strongly suggesting it as the source.
• All patients recovered fully with symptomatic treatment.

Impact:

• Confirms the toxic potential of "mad honey" due to grayanotoxin contamination.
• Highlights the ecological link between endemic flora and honey-borne toxins.
• Recommends implementing a monitoring system for honey production to prevent future intoxications.
• Provides valuable data for public health advisories regarding honey consumption in affected regions.