People in Lisbon commonly connect the dots after a doctor’s diagnosis—often when they look back at years of exposure during:
- Property maintenance (spraying weeds, treating fence lines, or maintaining outbuildings)
- Work near treated areas, including landscaping, groundskeeping, facility maintenance, and agricultural roles
- Secondhand exposure, such as herbicide residue carried on work clothes or equipment
- Seasonal patterns—spring and summer yard and vegetation control that may line up with when symptoms began
Because everyday exposure can happen in more than one setting, the strongest cases tend to be the ones that clearly map where exposure occurred, what product was used, and when—not just the fact that weed killer was involved.


