What is typically the greatest risk associated with ascending too quickly?

Ascending too quickly during a dive significantly increases the risk of decompression sickness, commonly referred to as "the bends." This condition occurs when a diver ascends too rapidly, leading to a decrease in pressure around them. Under high pressure while underwater, the body absorbs more nitrogen than it would at surface pressure. If a diver ascends too quickly, nitrogen comes out of solution in the form of bubbles, which can cause various symptoms from joint pain to neurological issues.

Decompression sickness results from the formation of these nitrogen bubbles in the bloodstream and tissues, which can cause blockages and lead to serious health complications. Recognizing this risk is fundamental for safe diving practices and emphasizes the importance of controlled, gradual ascents paired with safety stops to allow excess nitrogen to be safely eliminated from the body. This knowledge is crucial for ensuring the safety and well-being of divers during and after their underwater adventures.