Losing your sense of smell? It could be an early sign of Alzheimer’s or Parkinson’s disease

By Jannette Rodríguez Pallares, Profesora Titular de Anatomía y Embriología Humana, Universidade de Santiago de Compostela

In a magical scene towards the end of 2007 film Ratatouille, notoriously harsh food critic Anton Ego is instantly transported back in time, his childhood memories revived by a spoonful of the film’s eponymous dish. No pictures were needed – just the taste and scent of the food.

Smell is the quietest of our senses, but also one of the most powerful. Indeed, it can even open…

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