You may notice changes to your senses before, during or after treatment. We taste, smell and touch food when signals are sent from the mouth or nose to the brain. The senses of taste, smell and touch (the way food feels in your mouth) all work together to enable you to experience flavour. This may lead to malnutrition, which can result in increased side effects from treatment and loss of muscle strength. This can affect what foods you are able to eat and enjoy eating, and may contribute to a loss of appetite and weight loss. Changes to the taste, smell or feeling of food are a common side effect for people before, during and after cancer treatment.