Scientists have been studying the lifestyle of small-boat fishermen in Blue Zone communities like the Nicoya Peninsula in Costa Rica, Sardinia, and Ikaria. These communities exhibit distinctive molecular markers of slower biological aging, such as longer telomeres and "younger" DNA methylation patterns. The researchers have linked these markers to daily habits like exposure to predawn light, regular physical activity, a plant-based diet with small amounts of fish, midday rest, and strong social connections.

The fisherman's day routine, characterized by circadian regularity, balanced diet, siesta, and social ties, seem to contribute to resilience and slower aging. This lifestyle emphasizes the importance of consistent daylight exposure, purposeful movement, rest, and community support. While the longevity narratives of Blue Zones may not be universally applicable, focusing on well-supported behaviors like sleep regularity, plant-centric diet, modest fish consumption, physical activity, and social connections can promote overall health and well-being. Additionally, the guidance recommends choosing fish species that are common and sustainable to align personal health with environmental sustainability.