Fez — Morocco has secured the top spot in the “World Immunity Index 2026,” an international ranking that evaluates how lifestyle and environmental conditions may contribute to factors associated with stronger immune defenses.
Published by the British company “Nature’s Best,” the study compares 30 of the world’s most visited tourist destinations using a range of indicators tied to public health, climate conditions, and everyday habits. Morocco achieved the highest overall score in the index, with 63.4 out of a possible 80 points.
The ranking does not measure the biological immunity of populations directly. Instead, it analyzes environmental and lifestyle factors that scientific literature often associates with the body’s ability to defend itself against infections.
To build the index, researchers combined data from multiple sources, including public health statistics, meteorological records, and internet search trends.
Eight indicators shaping the ranking
The study evaluated eight key variables to assess the environments that may support immune health.
Among the factors considered were the median age of the population, the prevalence of obesity, smoking rates, and hospitalizations linked to alcohol consumption. Environmental indicators were also included, such as air pollution levels, average annual temperature, and precipitation.
The analysis also examined the frequency of internet searches related to dampness and mold in homes. Researchers interpreted these search patterns as a potential indirect signal of housing conditions that could affect respiratory health.
Each indicator contributed to a composite score calculated on a scale of 80 points, allowing the researchers to compare countries across multiple dimensions related to living conditions and health behavior.
Climate and lifestyle among key factors
With its score of 63.4, Morocco ranked ahead of India and South Africa in the global comparison.
According to the study’s authors, several factors may explain the country’s leading position. One of them is Morocco’s relatively dry climate. Lower levels of rainfall may reduce humidity in housing environments, limiting conditions that encourage mold growth, which is often linked to respiratory issues.
The analysis also pointed to comparatively lower smoking rates than those observed in several Western countries included in the ranking. Since tobacco use is widely recognized as a factor that can weaken immune defenses, this variable contributed positively to Morocco’s overall score.
Additionally, the study highlighted relatively low search interest related to household humidity or mold problems, which researchers interpret as a possible indicator of healthier indoor environments.
Interpreting the results with caution
Despite Morocco’s first-place ranking, the authors stress that the index should be interpreted carefully.
The ranking does not provide a direct measurement of the population’s immune system strength or overall health status. Instead, it functions as a comparative tool that identifies environmental and behavioral conditions that may influence immune resilience.
Immune health, experts note, is shaped by a complex combination of factors. Diet, physical activity, access to healthcare, socioeconomic conditions, and regional inequalities all play significant roles.
Public health data also indicate that issues such as overweight and obesity remain challenges in many countries, including Morocco, highlighting the multifaceted nature of health determinants.
The environment–health connection
Beyond the ranking itself, the study underscores a broader public health perspective that has gained traction in recent years: immune health is not determined solely by genetics or medical care.
Daily living conditions, including air quality, climate, housing environments, and lifestyle habits, can influence how the body responds to disease and infection.
