HUMAN NUTRITION

Detailed explanation-1: -Physical contaminant examples include glass chips, metal shavings, hair, or other foreign matter. Correct sanitation measures can help correct problems caused by direct contamination and prevent problems caused by cross-contamination.

Detailed explanation-2: -Types of physical contaminants that can be found in food include jewellery, hair, plastic, bones, stones, pest bodies, and cloth. Additionally, if there are problems with the food premises or equipment, such as flaking paint or loose screws in a piece of equipment, then these may also enter food.

Detailed explanation-3: -Four metals, namely lead, arsenic, cadmium and mercury, are of particular concern in food because of their toxicity, especially for long term (chronic) intake since they may accumulate in the body and cause organ damage particularly to susceptible groups such as foetuses and young children.