What are the potential risks associated with diving without a decompression stop, also known as "no deco"?

Diving without a decompression stop, or "no deco," can lead to decompression sickness, also known as "the bends." This occurs when nitrogen bubbles form in the body tissues due to rapid ascent, causing symptoms like joint pain, fatigue, and even paralysis. Other risks include arterial gas embolism, which can be fatal, and oxygen toxicity. It is important to follow proper dive tables or dive computer guidelines to prevent these risks.