I assume you meant life expectancy at birth. That is very different from life expectancy at adult ages. The former can be skewed downwards much by many babies

I assume you meant life expectancy at birth. That is very different from life expectancy at adult ages. The former can be skewed downwards much by many babies not surviving their first few days. It would be much more productive to compare the average life expectancy of those who died from natural causes with Marie's, or at least those of adults.