What Happens to Your Body When You Cook with Foil?

2. Chemical Reaction with Acidic Foods
One of the most critical factors in using foil is the type of food it comes into contact with. Acidic foods such as tomatoes, citrus fruits, or dishes prepared with vinegar and lemon juice create a strong chemical reaction with aluminum. This process dissolves the surface layers of the foil, allowing the metal to enter the food directly. Health Hazard: Consuming acidic foods cooked in foil can lead to digestive disorders and an increase in heavy metal levels in the bloodstream.