Which factor does NOT affect the incidence and severity of DCS?

The incidence and severity of Decompression Sickness (DCS) are influenced by several physiological and environmental factors. Among these, altitude, previous injury, and the rate of ascent are all critical.

Altitude is a significant factor because it determines the ambient pressure and the amount of dissolved nitrogen in the body. Higher altitudes increase the risk of DCS due to lower pressure during rapid ascent, which can lead to the formation of nitrogen bubbles in the body.

The rate of ascent is crucial as well; a rapid ascent can cause nitrogen to come out of solution too quickly, leading to an increased risk of DCS. Proper ascent rates allow for safer off-gassing of dissolved gases, thereby reducing the chance of forming bubbles.

Previous injuries, especially those related to decompression or involving pre-existing conditions, can also heighten the risk, as they may affect how well the body can handle changes in pressure.

Conversely, dietary habits generally do not have a direct impact on the physiological mechanisms that lead to DCS. While maintaining overall health and hydration is important for optimal body function, specific dietary habits are not recognized as a primary factor influencing DCS incidents or severity. Therefore, this aspect stands apart from the more directly related factors and is why it is identified