That's the justification for the claims, as backlash against formula companies in the past was huge because they did market themselves as better than breastmilk. It was so bad that WHO got involved.

The article is about formulas making claims about increased development and health in marketing, beyond what's normal or expected. It's not saying that they're unhealthy or bad, just that their marketing is misleading.

High mineral content. Unfortunately in this case it looks too high to support an eco system in the river.

His sister is very scary. She's very involved with propaganda and often speaks out against South Korea. The only thing keeping her from being successor is how patriarchal North Korea is.

It's more lack of quality land to farm than the number of farmers. Historically, South Korea was where the farming/food production was and the more mountainous North was more industrial. North Korea used Soviet and Chinese aid and over farmed the land that they could, but they have a pretty cold climate and unpredictable rain, so now that they can't get fertilizer and equipment such as water pumps as easily they barely feeding the population during a good year.

It's likely not an issue for people just passing through, but workers or regular patrons? Exposure over time is the big risk.