The worst endothelial cell killers come from the environment. Fossil fuel burning creates particles which fill the air, enter our bodies and kill cells. Pesticides and heavy metals like mercury cause endothelial cells to die and clump together, blocking blood flow. All of these pollutants need rules and regulation--because they make us sick. We are only as healthy as our planet. Fight for clean water and clean air. For our children. #BeInconvenient