Do hazelnut get rancid

Yes, hazelnuts can go rancid due to their high fat content. When exposed to air, light, or heat, the oils in hazelnuts can oxidize, leading to off-flavors and odors. To extend their shelf life, it's best to store them in a cool, dark place or refrigerate them in an airtight container. Consuming rancid hazelnuts can be unpleasant and may cause digestive issues.