Is it harmful to eat food wrapped in aluminum foil?

Eating food wrapped in aluminum foil is generally safe, but it's best to avoid direct contact with high heat sources. Aluminum foil is non-toxic and doesn't leach into food under normal cooking conditions. However, at very high temperatures, aluminum can potentially react with acidic or alkaline foods, leading to trace amounts of aluminum being released. To be safe, use heavy-duty aluminum foil and avoid wrapping food in foil for extended periods or at extremely high temperatures.