The present invention provides lipase inhibitors containing dimers having an epigallocatechin gallate (EGCG) unit derived from teas as well as foods and beverages and medicines containing said inhibitors. More specifically, the present invention provides lipase inhibitors containing at least one of proanthocyanidins represented by the formula: wherein R.sub.1 and R.sub.2 independently represent H or OH, and R.sub.3 and R.sub.4 independently represent H or a galloyl group; as well as foods and beverages and pharmaceutical compositions containing said lipase inhibitors.