Vitamin B12: what the biggest YouTube health voices say

3 of the biggest YouTube health voices have weighed in on Vitamin B12: 1 for, 2 it depends, 0 against.

Verdict from 3 voicesDebated

Often taken for: more energy. Updated 2026-10-29.

Voice by voice

Dr. Eric Berg 15.1M subscribers

For

Dr. Eric Berg’s take: Recommends hydroxocobalamin B12 for best absorption, supplying raw materials for repair and immune function in shingles nerve pain.

Mentioned at 5:12 in “Why Shingles Keeps Coming Back (& How to Stop the Burn)” · 2026-10-23

Huberman Lab 7.98M subscribers

It depends

Huberman Lab’s take: Suggests checking homocysteine as a marker of B vitamin status and supplementing B vitamins if elevated, ideally with adequate omega-3.

Mentioned at 73:09 in “Accelerate Learning & Increase Cognitive Capacity | Dr. Tommy Wood” · 2026-07-20

Dr. Alan Christianson 40K subscribers

It depends

Dr. Alan Christianson’s take: Suggests checking serum levels first, especially with unresolved fatigue and an autoimmune thyroid condition, and treating only if low while also finding the cause.

Mentioned at 0:15 in “B12, Fatigue, and Thyroid” · 2026-10-28

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