Neurobehavioral effects from Camp Lejeune refer to a range of cognitive, emotional, and neurological symptoms linked to contaminated drinking water at the Marine Corps base in North Carolina. From the early 1950s through 1987, service members and their families were exposed to water containing industrial solvents at concentrations hundreds of times above safe limits. A 2009 National Research Council report found limited but suggestive evidence connecting that exposure to neurobehavioral problems including memory loss, difficulty concentrating, fatigue, depression, and confusion.
What Was in the Water
Two water treatment plants at Camp Lejeune delivered contaminated drinking water for roughly three decades. The Hadnot Point system, which served the main base, had trichloroethylene (TCE) levels peaking at 1,400 micrograms per liter in May 1982. The Tarawa Terrace system, which served family housing, had tetrachloroethylene (PCE) levels reaching 215 micrograms per liter in treated water. The EPA’s current safety limit for both chemicals is 5 micrograms per liter. At their worst, the contamination levels were 280 times and 43 times above that limit, respectively.
TCE and PCE are chlorinated solvents widely used as degreasers and dry-cleaning chemicals. Both cross into the brain easily and interact directly with nerve cell receptors, suppressing excitatory signals and amplifying inhibitory ones. This disrupts normal brain signaling, which over time can damage the nervous system in ways that show up as changes in thinking, mood, coordination, and sensory function.
Symptoms Classified as Neurobehavioral Effects
The term “neurobehavioral effects” covers a broad category. In the context of Camp Lejeune, it includes both cognitive decline and neuropsychiatric symptoms. The NRC report specifically named these:
- Cognitive symptoms: memory loss, trouble concentrating, confusion, impaired decision-making
- Mood and psychiatric symptoms: depression, mood swings, tension, irritability
- Physical neurological symptoms: fatigue, headaches, lack of coordination, sensory disturbances (changes in vision, hearing, or sense of smell)
- Sleep disruption: insomnia and other sleep disturbances
Long-term occupational exposure to TCE in particular has been linked to memory loss, mood swings, impaired cognitive function, and damage to the nerves controlling smell. These aren’t vague associations. A large study of workers with high solvent exposure found they were 54% more likely to show deficits on tests of processing speed, 49% more likely to struggle with tasks requiring mental flexibility, and 33% more likely to have reduced verbal fluency compared to unexposed workers.
These Deficits Can Last Decades
One of the more concerning findings is that solvent-related cognitive damage doesn’t necessarily fade after exposure stops. Research published in the journal Neurology found that retirees who had high lifetime solvent exposure still showed elevated risk of cognitive impairment 12 to 30 years after their last exposure. Even those tested 31 to 50 years later showed somewhat elevated risk. People with high, recent exposure had impairment across nearly every cognitive domain tested.
The underlying damage appears to involve loss of the brain’s microscopic organizational columns, scarring of supportive brain cells, and breakdown of the insulation around nerve fibers. These structural changes help explain why the effects persist long after the chemicals have left the body.
Parkinson’s Disease Risk
Beyond the broader neurobehavioral category, Camp Lejeune exposure has been specifically tied to Parkinson’s disease. A study published in JAMA Neurology compared veterans who served at Camp Lejeune with veterans stationed at Camp Pendleton in California, which had clean water. Camp Lejeune veterans had a 70% higher risk of developing Parkinson’s disease. Earlier research on twin pairs had found that occupational TCE exposure was associated with a six-fold increase in Parkinson’s risk, though that study was smaller.
The JAMA study did not find excess risk for other forms of neurodegenerative parkinsonism, suggesting something specific about the relationship between TCE and the type of brain cell loss that drives Parkinson’s.
How Neurobehavioral Effects Are Evaluated
If you’re a veteran or family member experiencing these symptoms, evaluation typically involves a battery of cognitive and neurological tests. These assessments measure memory, attention, processing speed, coordination, and problem-solving ability. Some are simple paper-and-pencil tasks, while others are computerized. The tests compare your performance against norms for your age and education level, helping identify patterns consistent with solvent-related damage rather than normal aging or other conditions.
The pattern that clinicians look for in solvent exposure cases centers on deficits in visuomotor function (the ability to coordinate what you see with physical movements), motor control, memory, and concentration. This profile is distinct from other causes of cognitive decline and can help establish a connection to toxic exposure.
Legal Eligibility for Claims
The Camp Lejeune Justice Act of 2022 opened the door for financial relief related to health conditions caused by the contaminated water, including neurobehavioral effects. You qualify if you lived, worked, or were otherwise exposed at Camp Lejeune for at least 30 cumulative days between August 1, 1953, and December 31, 1987. Children whose mothers were exposed during pregnancy also qualify.
The process starts with filing an administrative claim with the U.S. Department of the Navy, which has six months to respond. If the Navy rejects the claim or doesn’t act within that window, you can file a lawsuit in the U.S. District Court for the Eastern District of North Carolina. Accepting a settlement from the Navy waives your right to file a lawsuit afterward.
Neurobehavioral effects are recognized as a health condition associated with Camp Lejeune exposure based on the NRC’s 2009 findings. The VA has used the NRC report’s conclusions to guide clinical care and disability evaluations for affected veterans, placing neurobehavioral effects alongside cancers and other conditions on the list of health problems linked to the contamination.