As Sea Levels Rise, Global Health Declines
A new analysis highlights the growing health effects of sea-level rise, which is weakening coastal communities and deepening inequalities in the face of climate change.
We picture submerged seawalls and disappearing land. But sea-level rise first strikes elsewhere: in groundwater, farmland and human bodies. A recent analysis describes it as an emerging global health crisis, affecting coastal regions and small island states first.
Salt water, a silent threat
Seawater intrusion causes a cascade of health effects that are often overlooked.
Drinking water
Seawater entering aquifers compromises access to drinking water and increases the risk of waterborne disease in areas where sanitation systems are already under strain.
Food and health
Soil salinisation reduces crop yields, worsening food insecurity and malnutrition. Excess salt in drinking water is also associated with direct health problems such as high blood pressure.
The most vulnerable are on the front line
Women, children and older people experience these consequences disproportionately. In some settings, the search for drinking water exposes women to greater risks of violence. Forced displacement causes overcrowding, disease transmission and trauma linked to the loss of land and cultural reference points.
The regions most affected are often those that contributed least to emissions. Sea-level rise directly raises the issue of climate justice.
An international commission bringing together climate and health experts is expected to publish its findings by 2027. Climate change is not merely a set of temperature curves.
It is a global human crisis in which climate action also protects the health, dignity and fundamental rights of the most exposed communities.
- Sea-level rise is first and foremost a health crisis affecting drinking water, food and disease.
- Women, children and older people experience its effects disproportionately.
- The regions least responsible for emissions are often the most affected.