I believe whoever started this line of thinking is on to something. It’s easy to get, and is in line with the “Spiritual healing” they supposedly believe in. I say supposedly, because some are not necessarily sure they (CD & LVD) actually believe it themselves or are just using it as a convenience for getting what they want.
It does seem to me from what I’ve seen to be easy to detect in the system though. Although I don’t think they thought there would ever be autopsies.
Copper Sulfate General Fact Sheet
and
Copper Sulfate Technical Fact Sheet
Acute Toxicity:
Oral
The acute oral LD50 in rats is 450 to 790 mg/kg. The U.S. EPA considered copper sulfate pentahydrate to be moderately toxic by ingestion.3 See the text boxes on Toxicity Classification and LD50/LC50.
Humans may be exposed to copper in drinking water. Volunteers drank purified water with copper at concentrations ranging from 0-12 mg/L. They reported nausea starting at 4 mg/L and vomiting at 6 mg/L. Solutions containing copper and orange flavor raised the NOEL to 6 mg/L for nausea and 12 mg/L for vomiting. Hence, flavored beverages contaminated with copper may lead to higher exposures.15 See the text box on NOEL.
Scientists measured total copper ion in people's blood serum after they ingested copper sulfate. Mean blood copper levels of 287 µg/L Cu were correlated with mild toxicosis and levels of 798 µg/L Cu to severe toxicosis.16
The toxic dose of copper sulfate for cattle is 200-880 mg/kg. Sheep are ten times more sensitive with a toxic dose of 20-110 mg/kg of copper sulfate.17
Adult roosters were exposed by intubation to copper sulfate doses of 200, 600, 800, 1200 and 1600 mg/kg body weight. The acute LD50 was determined to be 693 mg/kg. Treated animals developed diarrhea and died within 24 to 28 hours. Necropsies revealed bleeding of the kidneys and liver, necrosis in liver tissue, and testicular atrophy.18
LD50/LC50: A common measure of acute toxicity is the lethal dose (LD50) or lethal concentration (LC50) that causes death (resulting from a single or limited exposure) in 50 percent of the treated animals. LD50 is generally expressed as the dose in milligrams (mg) of chemical per kilogram (kg) of body weight. LC50 is often expressed as mg of chemical per volume (e.g., liter (L)) of medium (i.e., air or water) the organism is exposed to. Chemicals are considered highly toxic when the LD50/LC50 is small and practically non-toxic when the value is large. However, the LD50/LC50 does not reflect any effects from long-term exposure (i.e., cancer, birth defects or reproductive toxicity) that may occur at levels below those that cause death.
Dermal
Copper sulfate is not a skin irritant. It was classified by the U.S. EPA as very low in toxicity for dermal irritation. The dermal LD50 was greater than 2000 mg/kg in rats.3
Copper sulfate caused severe eye irritation from day 1 in rabbits that were exposed up to 21 days, and it was ranked as highly toxic by the U.S. EPA for primary eye irritation.3
No data were found regarding the potential for copper sulfate to cause dermal sensitization in any species.3
How about the statement “drinking the Koolaid”. . . seems to fit!