I'm sorry but do you have a better source than that guy? He's a quack doctor and has been warned multiple times over making false claims.
He was that top result in google. Now that I know you don't like him I'll make sure to post some of his articles here lol Just joking I don't frequent that site or have an interest in the subject. I eat very unhealthy.
Most of the results are from natural medicine/organic living websites because most other news outlets are funded by the ones that poison us or their readers are not healthy and don't care about the subject of corporate poisoning.
Naturopathic doctors / Homeopathic doctors get a lot of bad press from the government, but it is probably their own fault for making outlandish claims........
Time ok? They once had Hitler as person of the year....... haha http://time.com/4993877/weed-killer-roundup-levels-humans/
I'm not sure about a lethal dose but it doesn't take much to shut down a vital organ in your body like your liver. Not to mention how it will harm you days, months later lol
https://articles.mercola.com/sites/articles/archive/2017/01/24/what-does-roundup-do-to-liver.aspx
Excuse me while I eat some cereal with trace amounts...... YUM corporate greed