After carefully reviewing the briefs and record on appeal, we affirm substantially for the reasons stated by the district court.

The appellant argues that the administrative law judge ignored material evidence and substituted his judgment for *728 expert medical opinion. However, substantial evidence supported the determination that the claimant would not have been disabled if he had not been drinking. 20 C.F.R. § 404.1535(b). The record contains ample evidence linking the claimant’s symptoms to ongoing alcohol abuse, in addition to liver disease. Ortiz v. Secretary of Health and Human Services, 955 F.2d 765, 769 (1st Cir. 1991).

Affirmed. Loe. R. 27(c).