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C ertain fish contain fatty acids that have been shown to help lower the risk of coronary artery disease. Because walnuts contain the same kind of fatty acids, researchers at UC Davis are seeking participants for a study that will investigate whether a diet that includes walnuts can lower blood fats that cause hardening of the arteries. Participants must have high levels of serum cholesterol and triglycerides to take part in the six-month study. However, omega-6 fatty acids have been shown to lower LDL levels. High levels of LDL and triglycerides are known to increase a person's risk of coronary artery disease, the leading cause of death in the United States.