The "Delphi School 2026" (April 20-21, 2026, Delphi) was co-organized by the Center for Public Health Research and Education of the Athens Academy and the Harvard T.H. Chan School of Public Health, in association with the Delphi Economic Forum and "Kathimerini" newspaper. In the two-day program, titled "From Science to Policy: Healthy Ageing", distinguished scientists and decision-makers participated, aiming to translate scientific knowledge into actionable public health policies.

The proceedings were structured into four thematic sessions:

1. Nuclear Power Energy — Prospects, Challenges, and Health Effects

Coordinated by Professor Petros Koutrakis, who was also one of the speakers, the session focused on the so-called "Nuclear Renaissance," contrasting modern energy demands with the environmental and health risks of nuclear power plants.

2. Climate change and environmental factors related to health and ageing

Under the moderation of Professor Klea Katsouyanni, the session outlined the direct consequences of the climate crisis on ageing, identifying the gap between available scientific knowledge and the lack of institutional readiness and political will.

3. Fish Farming & Aquaculture: Prospects, Impacts, and Controversies

In the third session, Professor Petros Koutrakis coordinated the dialogue surrounding the complexities of the fish farming and aquaculture sectors, weighing the environmental costs in contrast to their undeniable socioeconomic value.

4. Healthy Ageing – Diet and physical activity

The central message of the fourth session, coordinated by Professor Walter Willett, substantiated that daily habits, primarily diet, determine the quality of ageing, much more than genetic predisposition in significance.

The Delphi School highlighted the imperative need for systematic collaboration of the research community with the State. It made it clear that evidence-based interventions constitute the only path for implementing meaningful reforms with a positive social and economic impact on the challenges of ageing.

The speakers' joint positions on the above topics were presented the next day by the coordinators at Delphi Forum XI.