“Dioxin is a fat-soluble compound, so if it gets into a cow, it can then get into milk or your hamburger and so on,” Lester says.

Source: https://www.theage.com.au/world/north-america/like-the-gates-of-hell-had-opened-fears-grow-over-ohio-toxic-train-wreck-site-20230225-p5cniy.html?ref=rss&utm_medium=rss&utm_source=rss_world

Vitamin D is a fat-soluble vitamin, which means it’s better absorbed when taken with a source of fat.

Source: https://news.worldsnap.com/health/how-to-make-sure-your-vitamins-absorb-the-best-212986.html