Why is helium added to oxygen which is used by deep-sea divers?

Why is helium added to oxygen which is used by deep-sea divers? Correct Answer It is less soluble in blood

Air contains a large amount of nitrogen. According to Henry’s law, the solubility of gases increases with increase in pressure. Due to the increased pressure, a large amount of nitrogen dissolves in the blood of a deep-sea diver. To prevent this, helium is added to the oxygen cylinders as it is sparingly less soluble in blood.
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