What is a common consequence of milk contamination with antibiotics?

When milk is contaminated with antibiotics, one of the most significant consequences is the potential for human allergic reactions. Many people have sensitivities or allergies to specific antibiotics, and if these substances are present in milk that is consumed, it can trigger adverse immune responses in susceptible individuals. This highlights the importance of testing milk for antibiotic residues before it is processed and consumed, as it ensures safety for consumers who may be allergic.

While flavor alterations and increased lactose levels can also occur in milk due to various factors, they are not typically directly associated with antibiotic contamination. Higher production costs could arise from issues related to antibiotic use, such as reduced sales due to regulatory penalties or waste if milk is deemed unfit for sale. However, the immediate and health-related risk posed by potential human allergic reactions makes this issue particularly critical.