You are a bunch of idiots. Didn't bother to read the article,
apparently.

Spend time in sunlight. Vitamin D is often referred to as “the
sunshine vitamin” because the sun is one of the best sources of
this nutrient. ... feel free to get skin cancer
Consume fatty fish and seafood. ...
Eat more mushrooms. ...
Include egg yolks in your diet. ...
Eat fortified foods. ...
Try a UV lamp. ... not in your anus

Vitamin D2 (ergocalciferol) – which is synthesized by plants and is
not produced by the human body.
Vitamin D3 (cholecalciferol) – which is made in large quantities in
the skin when sunlight strikes bare skin. It can also be ingested
from animal sources.