TYLER, Texas (KLTV) - Helium may be best known for making balloons float, but it also plays a critical role in modern medicine.

Now, as global supply tightens and prices rise, Tyler businesses that rely on helium say they are feeling the impact first, while hospitals keep a close eye on costs.

At Balloonaire Club in Tyler, owner Desiree Martinez uses helium every day to fill balloons for customer celebrations.