The Board denied service connection for hypothyroidism, to include Hashimoto's disease, as the evidence did not support a finding that it was caused by in-service toxin and environmental hazard exposure.
The deciding factor: The September 2024 VA examiner opined that the Veteran's hypothyroidism was less likely than not incurred in or caused by his claimed in-service injury, event, or illness, and there was no clinical evidence to support the contention that it was caused by any injury, event, or illness during active service.
- Claimed conditions
- hypothyroidism, Hashimoto's disease
- How they argued it
- Direct service connection
- Exposure basis
- None
- Rating assigned
- None in this decision
- Decision date
- December 16, 2025
- Citation
- A25108175
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