[Chlorinated hydrocarbons in the daily diet]

Area of Science:

• Environmental Chemistry
• Food Safety
• Toxicology

Background:

• Chlorinated hydrocarbons, including DDT, have been widely used as insecticides.
• Concerns exist regarding their persistence in the environment and potential health effects.

Purpose of the Study:

• To quantify the intake of specific chlorinated hydrocarbons (DDT, DDE, DDD, lindane) in the daily diets of men and young children.
• To compare estimated intake levels with Acceptable Daily Intake (ADI) values.

Main Methods:

• Gas chromatographic analysis of daily food and beverage samples.
• Dietary intake assessment based on food consumption and body weight.

Main Results:

• Adults (men) showed residues of DDT, DDE, DDD, and lindane, with total DDT intake below ADI.
• Young children (1-3 years) in a nursery had higher total DDT intake (5.3 mug/kg body weight) exceeding the adult ADI.
• Residue levels in children's diets were found to be 42 mug of DDT, 12 mug of DDE, 8 mug of DDD, and 7 mug of lindane per day.

Conclusions:

• Dietary intake of total DDT by young children exceeded the recommended ADI, highlighting a potential health risk.
• The findings support the need for zero tolerance for DDT in foodstuffs, especially ready-to-use baby foods.
• Replacing DDT with alternative insecticides is crucial for public health and preventative medicine.