Vitamin D supplementation

Correcting genuine deficiency is well-supported: vitamin D with calcium has long-standing human trial evidence for bone density and fracture risk in deficient and institutionalised older populations, and severe deficiency causes rickets and osteomalacia. That is the clinical floor, and it is real. What the evidence does NOT show is a healthspan or lifespan benefit in people who are already replete. Large randomised trials in generally sufficient populations (notably VITAL) found no reduction in cancer incidence or major cardiovascular events from supplementation; this is widely reported but I was unable to re-open the primary trial sources live in this session, so treat the specific VITAL result as directionally reliable rather than independently re-verified here. The telomere-maintenance framing used in Everlab's marketing rests on a secondary/ancillary analysis, which is hypothesis-generating, not proof of slowed ageing. Advantage Medical Group's own reported figure, that more than 50% of those it tests show levels below 30 ng/mL, is clinic-internal data with no published methodology, and the 30 ng/mL threshold is itself contested (some authorities use 20 ng/mL as sufficiency). Net position: clinical evidence for treating deficiency and for bone outcomes; commercial framing for anti-ageing, longevity or healthspan extension. High-dose intermittent regimens have signals of harm (increased falls/fractures in some trials), so "more is better" is not supported.

What it is

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Common questions

What is Vitamin D supplementation?

Correcting genuine deficiency is well-supported: vitamin D with calcium has long-standing human trial evidence for bone density and fracture risk in deficient and institutionalised older populations, and severe deficiency causes rickets and osteomalacia. That is the clinical floor, and it is real. What the evidence does NOT show is a healthspan or lifespan benefit in people who are already replete. Large randomised trials in generally sufficient populations (notably VITAL) found no reduction in cancer incidence or major cardiovascular events from supplementation; this is widely reported but I was unable to re-open the primary trial sources live in this session, so treat the specific VITAL result as directionally reliable rather than independently re-verified here. The telomere-maintenance framing used in Everlab's marketing rests on a secondary/ancillary analysis, which is hypothesis-generating, not proof of slowed ageing. Advantage Medical Group's own reported figure, that more than 50% of those it tests show levels below 30 ng/mL, is clinic-internal data with no published methodology, and the 30 ng/mL threshold is itself contested (some authorities use 20 ng/mL as sufficiency). Net position: clinical evidence for treating deficiency and for bone outcomes; commercial framing for anti-ageing, longevity or healthspan extension. High-dose intermittent regimens have signals of harm (increased falls/fractures in some trials), so "more is better" is not supported.

How strong is the evidence for Vitamin D supplementation?

Clinical. There is human trial evidence, which is the strongest grade variis applies to a protocol.

Is Vitamin D supplementation approved in Singapore?

Health Sciences Authority position on record: Regulated as a health supplement. HSA states health supplements "are not subject to approvals and licensing by HSA for their importation, manufacture and sales" — there is no pre-market approval or product registration. Responsibility for safety and quality sits with the dealer, who must comply with prohibited/restricted ingredient lists, heavy metal and microbial limits, labelling requirements and vitamin/mineral dosage limits, and must hold supporting documentation. Notification to HSA is voluntary. Critically, health supplements "must not be labelled, advertised or promoted for any specific medicinal purpose" — so disease treatment, prevention or longevity/anti-ageing claims on a vitamin D product are not permitted, only support of normal body function. Verified directly from hsa.gov.sg.. An evidence grade and a regulatory approval are different questions.

Is Vitamin D supplementation approved in Australia?

variis has no Therapeutic Goods Administration position on file for Vitamin D supplementation. Absence of a recorded position is not approval.

Which clinics offer Vitamin D supplementation?

1 clinic in the variis directory across Singapore and Australia has Vitamin D supplementation on record. Each is listed on this page with its own sourced profile.

What else is Vitamin D supplementation called?

Also known as Cholecalciferol, Vitamin D3, 25-OH vitamin D repletion, Calciferol.