Seaweed-Derived Mineral-Rich Nutraceuticals in Cognition

Inclusion Criteria: To be considered eligible for enrolment into the study, subjects must; 1. Be able to give written informed consent. 2. Be between 65 and 85 years of age (elderly cohort). 3. If female, must be non-pregnant. 4. Be in generally good health as determined by the investigator. Exclusion Criteria: Subjects will be excluded from the study if they meet any of the below criteria; 1. Are less than 65 and greater than 85 years of age (elderly cohort). 2. Are pregnant females. 3. Are currently taking calcium/magnesium supplements, or have taken them in the past 14 days. 4. Have a significant acute or chronic co-existing illness (cardiovascular, gastrointestinal, endocrinological, immunological, metabolic or any condition which contraindicates, in the investigators judgement, entry to the study). 5. Have a score of \<22 in the Montreal Cognitive Assessment (MoCA) (elderly cohort) and have no subjective memory impairment. 6. Have a history of renal failure or renal disease, or eGFR creatinine levels below 30ml/min. 7. Have diagnosis of significant low or high calcium or magnesium levels. 8. Have a condition or are taking a medication that the investigator believes would interfere with the objectives of the study, pose a safety risk or confound the interpretation of the study results; to include misoprostrol, polystyrene sulfonate, Riociguat and vitamin/mineral supplements, probiotics or herbal remedies. 9. Are individuals who, in the opinion of the investigator, are considered to be poor attendees or unlikely for any reason to be able to comply with the trial. 10. Are receiving treatment involving experimental drugs. 11. Have been in a recent experimental trial, these must have been completed not less than 30 days prior to this study. 12. Have a malignant disease or any concomitant end-stage organ disease. 13. Have a psychiatric illness which contraindicates entry to the study.