Why is it crucial for divers to be educated about nitrogen loading before making multiple dives?

Understanding nitrogen loading is crucial for divers because it directly relates to the risk of decompression sickness, commonly known as "the bends." When divers descend, they are exposed to increased pressure, which causes their bodies to absorb more nitrogen from the breathing gas (usually air, which is made up of approximately 78% nitrogen). As divers proceed with multiple dives, nitrogen accumulates in their body tissues.

If a diver ascends too quickly or does not allow enough time for their body to eliminate the excess nitrogen, it can form bubbles in the bloodstream and tissues as pressure decreases. This is what leads to decompression sickness, which can have serious, potentially life-threatening consequences.

Educating divers about nitrogen loading helps them understand how to plan their dives, including necessary surface intervals and ascent rates, to safely manage this nitrogen absorption and reduce the risk of illness. By doing so, divers can enjoy multiple dives while minimizing the dangers associated with residual nitrogen in their bodies.