What is a likely reason for the allowance of certain tolerance limitations on food additives?

The allowance of certain tolerance limitations on food additives is primarily rooted in the need to safeguard public health. Establishing these limits recognizes that, without defined boundaries, producers could inadvertently or deliberately exceed safe levels of additives. These tolerance levels are scientifically determined to ensure that any additives used do not pose a risk to consumers, balancing the benefits of such substances while protecting health. By having clear thresholds, regulations help maintain food safety standards and minimize the risk of adverse effects that might arise from excessive consumption of these additives.