[zxter]

Please consult a doctor before taking lamp form. You could easily reach toxic levels.

[idlewords]

Make sure to double-check on Twitter before following medical advice from a Hacker News thread

[CoolGuySteve]

Yes, I'd just like to add that moms on Facebook may seem invaluable but they are often a misguided version of the information you can read on the subreddit.

Don't be gullible, check your facts!

[YokoZar]

Should they also consult a doctor before going outside?

There are a lot of risks to being in UVB light too much, but excess endogenous Vitamin D production isn't one of them.

[paulcarroty]

There's a risk to get a skin cancer, so its very serious.

Better to eat oranges and go outside as much you can: balcony/roof/near private home etc.

[rapsey]

So is spending time in the sun without sunscreen.