Tag: Olfactory senses

The human sense of smell is incredibly powerful, with studies showing it can detect over a trillion different odors. This innate ability is often the first line of defense against spoiled food, signaling potential dangers before consumption. However, relying solely on your nose to determine if you can use smell for food safety isn't always reliable, as some harmful bacteria produce no noticeable odor.

Research consistently demonstrates that the olfactory system is intrinsically linked to our appetite and eating behaviors. The scent of food can trigger a host of physiological responses, including salivation and the release of appetite-regulating hormones, priming the body to eat. But exactly what scent stimulates appetite, and how can this be leveraged effectively?

A 2023 meta-analysis showed that fasting can significantly increase olfactory sensitivity in humans, indicating a heightened sense of smell. This, along with complex hormonal and neural shifts, is the primary reason why fasting can change your taste buds and lead to a profound sensory recalibration.