Effects of an Omega-3 Fatty Acid-based Supplement on Healthy Ageing

The goal of this randomised, double-blind placebo controlled trial is to explore tolerability and the effects of a new omega-3 fatty acid-based supplement on biological and clinical aspects relevant for healthy ageing. Participants will be asked to take a supplement or a placebo for 6 months, and to attend the clinic a total of 3 times and to perform or submit the following: * Physical examination * Muscle function tests * Cognitive testing * Questionnaire completion * Biological samples, including blood, saliva and faeces. Researchers will compare the results from the group taking the supplement to the results of the group taking a placebo to see if the supplement has an effect on biological and clinical aspects associated with healthy ageing.