Can a daily pill slow cellular ageing? small study investigates

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Participant has provided written informed consent before participating in the study after being given a full description of the study and prior to any study-specific procedures being performed. 2. Participant has no significant medical diagnosis (health individuals) 3. Participant takes no regular prescription medication 4. Participant is not undertaking any restrictive diet (e.g. Carnivore, Low FODMAP) 5. Participant agrees to adhere to guidance on fortified food intake for the duration of the study 6. Participant is a male or non-pregnant female and is ≥35 years of age 7. If WOCBP participant is willing to adhere to one of the following methods of contraception i) Hormonal contraception e.g. the 'pill' or an implant ii) Intrauterine device (IUD) iii) Intrauterine hormone-releasing system (IUS) iv) Hysterectomy v) Vasectomised partner vi) Sexual abstinence (if it is in line with your preferred and usual lifestyle). 8. Participant can communicate well with the Investigator and to comply with the requirements for the entire study. 9. Participant has a body mass index (BMI) of 18.5 - 39.9kg/m2 (bounds included). Exclusion Criteria: 1. Participant has consumed nutritional supplement, that in the opinion of the investigator may affect any of the study primary or secondary endpoints, in the past 3 months 2. Diagnosis of any current medical condition that requires regular prescription medication or at the discretion of the investigator may affect study endpoints 3. Participated in a trial of an investigational medical product or medical device in the last 28 days. 4. Females who report to be pregnant or lactating 5. Unwilling to maintain a stable diet for the duration of the trial. 6. Unwilling to consume \<5 portions per week fortified food per week 7. History of drug or alcohol abuse 8. Alcohol use \>2 standard servings/day 9. Being in the opinion of the investigator unsuitable, in the circumstance where patient safety of scientific value of the study may be affected i.e. unable to swallow capsules, phobia to needles, significant travel that would affect adhereance study participation etc 10. Hypersensitivity to any component of the supplement 11. Previously identified niacin deficiency 12. Participant is involved in this study as an Investigator, sub-Investigator, study coordinator or other delegated study team members.