[aldur]

This study [1] might relate to it: Intermittent Fasting in Cardiovascular Disorders—An Overview.

In section 7 the authors expose pros and cons of intermittent fasting, specifying that for elderly individuals it might be associated with an increased risk of cardiovascular disease, while for the rest of the population it is generally associated with a decreased risk.

[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6471315/