People in India who go gray too early are more likely to have low levels of vitamin B12, and some of them also have a sign in their blood that might mean their body is having trouble absorbing this vitamin.

28

Pro

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Against

Evidence from Studies

Supporting (1)

28

Community contributions welcome

28

Demographic Characteristics and Association of Serum Vitamin B12, Ferritin and Thyroid Function with Premature Canities in Indian Patients from an Urban Skin Clinic of North India: A Retrospective Analysis of 71 Cases

Case-Control Study

Human

2017 May-Jun

This study found that Indian kids and teens with early gray hair often had low Vitamin B12, which matches the claim that low B12 is linked to early gray hair.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Demographic Characteristics and Association of Serum Vitamin B12, Ferritin and Thyroid Function with Premature Canities in Indian Patients from an Urban Skin Clinic of North India: A Retrospective Analysis of 71 Cases

Score: 28

DOI: 10.4103/ijd.IJD_221_17

Similar Assertions

When people don’t have enough vitamin B12, their blood tends to have less hemoglobin — which means their blood can’t carry oxygen as well. The less B12 they have, the worse their anemia seems to be.

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If someone has low vitamin B12 and anemia, their red blood cells are unusually large and their blood doesn't carry enough oxygen. Giving them a weekly B12 shot for six weeks can fix this, making their blood cells normal size again and boosting their oxygen levels.

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72%