Nurses and patients were found to perceive the importance of barriers differently: nurses reported higher scores on patient-related communication barriers, whereas patients reported higher scores on the nurse-related barriers.
The U.S. Department of Agriculture reports that cheese contains one of the highest natural concentrations of tyrosine. Grated Parmesan cheese has the most, with 1 cup containing 2.3 grams of the amino acid. Swiss cheese has 2.2 grams per cup, provolone contains 2 grams and mozzarella has 1.6 grams in each cup. A single serving of cheese is equivalent to 1 1/2 ounces of hard cheese or 1/3 cup of shredded cheese. To limit your fat, saturated fat and cholesterol intake, eat cheese in moderation and choose reduced-fat brands. Dry-roasted, unsalted peanuts contain 1.4 grams of tyrosine in each cup.
The body makes tyrosine from another amino acid called phenylalanine. Tyrosine can also be found in dairy products, meats, fish, eggs, nuts, beans, oats, and wheat. Tyrosine is used in protein supplements to treat an inherited disorder called phenylketonuria (PKU).