Final answer:
The body primarily loses zinc through fecal matter, with smaller amounts lost through urine, sweating, and skin cell shedding.
Step-by-step explanation:
The human body can lose zinc through several routes; however, the primary way the body loses zinc is through fecal matter. This is because most zinc that is not used by the body is excreted by the intestines into the feces. While some zinc can also be lost through urine, sweat, and even through skin cell shedding, the quantities are significantly lower compared to fecal excretion. It is important for the body to regulate zinc levels because it is essential for numerous biochemical processes. Excess sweating can lead to loss of some minerals and ions like sodium and chloride, but not specifically zinc.