4 ms·
It’s not free or simple if the sun doesn’t shine where you live.
by oe 8y ago
It’s not free or simple if the sun doesn’t shine where you live.
- glun 8y agoAnd even when it does shine the critical UVB spectrum may not pierce the athmosphere at a strong enough intensity for the body to produce vitamin D.
- sametmax 8y agoThat's not the majority of the world, population wise. You can offer alternative for the exceptional case, but you should label it as such.