Editing Human Premature Mortality Count (section)

== Boundary Conditions ==
Boundary inclusions encompass deaths occurring prior to the standard life expectancy age benchmark, where causality is linked to environmental or health-related stressors. This includes mortality attributable to air pollution, toxic chemical exposure, and other environmental hazards. Boundary exclusions are deaths unrelated to environmental causes, such as those from genetic conditions, accidents, or natural aging processes beyond the premature threshold. The signal excludes deaths with insufficient data to establish environmental causation or those outside the defined temporal aggregation period.