The Board denied service connection for a heart disorder, including myocardial infarction, and an increase in the rating for hypertension. The veteran's claim was not well-grounded as he did not submit competent evidence to show a plausible claim for service connection.

The Veteran's service connection claim for coronary artery disease with myocardial infarction is granted on a presumptive basis due to exposure to herbicide agents during his active duty in Korea.

The Board has remanded the Veteran's claims for service connection due to errors in obtaining relevant medical records and authorization for private treatment providers. The issues include heart disorder, OSA, sinusitis, lumbar spine disorder, and right knee disorder all related to Agent Orange exposure.

The Board has decided to remand the Veteran's claims for an increased rating for coronary artery disease and entitlement to a total disability rating based on individual unemployability due to service-connected disabilities. The decision is pending further action as private treatment records are needed.

The Veteran's tinnitus and hearing loss claims are denied as there is no current diagnosis of these conditions.,The Veteran's high cholesterol, dementia, stroke, prostate cancer, cataracts, diabetes, hypertension, CHF, and myocardial infarction claims are denied due to lack of service connection evidence or insufficient evidence to establish a nexus between the disabilities and active duty service.,The Veteran was exposed to toxins during his military service but there is no evidence linking these exposures to any of the claimed conditions.