FRONTIERS IN ENVIRONMENTAL SCIENCE, cilt.14, sa.1816431, ss.1-11, 2026 (SCI-Expanded, Scopus)
Life expectancy is an important global indicator of the overall health and longevity
of a society. Therefore, the present study investigates the effects of environmental
policy stringency and the use of renewable, alternative, and nuclear energy
sources on life expectancy at birth (LEB) in the E7 countries over the period of
1992–2020 through robust cointegration and causality tests. The outcomes of
the causality test demonstrate a one-way causal nexus from the use of renewable,
alternative, and nuclear energy sources to LEB as well as a unidirectional causal
nexus from LEB to environmental policy stringency. The outcomes of the
cointegration coefficient estimation demonstrate that the effects of
environmental policy stringency and the use of renewable, alternative, and
nuclear energy sources on LEB vary significantly among the E7 countries.
However, countries implementing relatively stricter environmental policies and
more clean energy sources have achieved better life expectancy. Therefore,
policies that support improved environmental quality and encourage the
development and use of energy sources with low CO2 emissions play
significant roles in achieving progress in terms of overall life expectancy