Some foods that are bad to eat when a person has gout are organ meats, such as beef liver and kidney, and certain fish, such as tuna, herring, mackerel and anchovies, according to Mayo Clinic. These foods are high in purines, which are broken down into uric acid.
Other foods that are bad for people with gout are saturated fats, which make it difficult for the body to remove uric acid from the system, states Mayo Clinic. Saturated fats put people at risk for obesity, which also increases the risk for gout. Alcohol, especially beer, also reduces the body's ability to eliminate uric acid. People who are suffering a gout attack should abstain from alcohol.
High fructose corn syrup can also cause the body to hold on to uric acid. It is the only carbohydrate known to do so, according to the Mayo Clinic. People who suffer from gout should, therefore, try to eliminate sodas, juices and other beverages with high fructose corn syrup.
Uric acid can form crystals which then accumulate in the joints, causing the pain of gout, states Mayo Clinic. These uric acid crystals often accumulate in the big toe, notes WebMD. There, they cause swelling, tenderness and pain.