The FDA has set maximum levels for lead in baby food. A new California law requires baby food makers selling products in the state to disclose levels of four heavy metals.

But consumer advocates say the Food and Drug Administration's new guidance on lead limit in baby food doesn't go far enough.

The agency issued final guidance that it estimated could reduce lead exposure from processed baby foods by about 20% to 30%. The limits are voluntary, not mandatory, for food manufacturers, but they allow the FDA to take enforcement action if foods exceed the levels.

The U.S. Food and Drug Association (FDA) released the first-ever guidelines for levels of lead in processed baby foods this week. However, many health and safety advocates say they are not satisfied with the guidance.

The FDA's new standards for toxic lead target processed baby foods such as jarred fruits, vegetables, yogurts and dry cereals.