What effect does diving with Nitrox have on the risk of decompression sickness?

Diving with Nitrox generally reduces the risk of decompression sickness due to the lower levels of nitrogen compared to air. Nitrox is a breathing gas that contains a higher percentage of oxygen and a correspondingly lower percentage of nitrogen. Because nitrogen is the gas that contributes to the formation of bubbles in the bloodstream, which can lead to decompression sickness, reducing the nitrogen exposure during a dive decreases the potential for nitrogen absorption in tissues.

When divers use Nitrox, they can typically extend their no-decompression limits and ascend more safely, as there is less nitrogen which can lead to saturation and subsequent decompression issues if not managed properly. However, it's important to note that while Nitrox can help mitigate the risk, it does not eliminate it entirely. Safe diving practices, adhering to dive tables or using dive computers properly and planning dives carefully are still essential components to minimize the risk of decompression sickness. This is why the statement that Nitrox reduces the risk is accurate, emphasizing the importance of understanding the dynamics of nitrogen narcosis and decompression methodologies.