Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
_fq4v
on Dec 7, 2017
|
parent
|
context
|
favorite
| on:
The Big Vitamin D Mistake
This does not work if you have dark skin and do not live in the tropics.
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search:
