Spirulina-Silicon pills tested for artery health in seniors

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

Inclusion Criteria: * The subject must have given their free and informed consent and signed the consent form * The subject must be a member or beneficiary of a health insurance plan * The subject is available for 6 months of follow-up * The subject must not have any pre-existing chronic illness nor any revealed during the pre-inclusion visit, either treated or requiring treatment according to current recommendations Exclusion Criteria: * The subject is participating in an interventional study, or is in a period of exclusion determined by a previous study * The subject refuses to sign the consent * It is impossible to give the subject informed information * The patient is under safeguard of justice or state guardianship * Presence of a chronic cardio-vascular and/or metabolic illness, known or revealed by the pre-inclusion exam and requiring treatment in accordance to official recommendations (HAS) * Any other chronic pathology requiring medical treatment * History of uric acid metabolism disorders (hyperuricemia, gout, urolithiasis). * Subject presenting a loss of limitation of autonomy * Treated with hormone replacement therapy in females * Active smoker or drug user * Presence of an abnormality revealed by the pre-inclusion biological assessment of dyslipidemia justifying a prescription medication, diabetes or intolerance to glucose (insulin resistance). * Presence of a stenosis (greater than 50% in diameter, NASCET method) or carotid occlusion revealed by the echo-Doppler screening test. * Presence of an aneurysm (dilation\> 30 mm) of the abdominal aorta revealed by the echo-Doppler screening test. * Arteriopathy of the lower limbs (toe systolic pressure (tsp) \<0.7) revealed by the screening test (SysToe™ device). * Subject already taking a food supplement based on spirulina or silicon. * History of cardio-vascular disease or heart attack * Subject develops a chronic illness requiring medical treatment for more than 7 days or a surgical intervention leading to incapacity for more than 7 days,or a pathological event during the 14-day period before each follow-up visit, or a serious adverse event