PART TWO: GETTING WELL AGAIN
An Index Of Carcinogenicity Among Metal Carcinogens
By C. Peter Flessel et al. From Carcinogenicity and Metal
Ions, volume 10 of a series called Metal Ions in Biological Systems,
edited by Helmut Sigel.
Human studies
Animal Studies
Short-term bioassays
Metal Posi-
tive
results
Points Posi-
tive
results
Poin
ts
Posi-
tive
results
Negative
results
Net
point
s
Total
points
(a)
Arsenic >3 12 0 0 4 0 3 15
Beryllium ~1 6 3 6 4 1 3 15
cadmium 1 6 3 6 5 0 3 15
cobalt 0 0 2 5 3 1 2 7
chromate >3 12 >3 6 5 0 3 21
Iron (Fe) ~1 6 ~1 (b) 3 4 2 2 11
Nickel >3 12 >3 6 4 1 3 21
Lead (Pb) ~1 6 ~2 5 4 1 3 14
Titanium 0 0 ~1 3 0 0 0 3
Zinc 0 0 2 5 3 1 2 7
(a) See pp. 41-43 [not shown] for scoring rules.
(b) A number of studies have confirmed that only iron-carbohydrate complexes, among
a variety of iron compounds tested, are carcinogenic in animals.
Fig. 49 Metal carcinogenicity
Again, I want to emphasize that the amount and the form of
the metal is very important. For instance, zinc metal is carcino-
genic (cancer producing). However an appropriate dose of zinc
sulfate is anti-carcinogenic.^46 Get your essential minerals
from foods, not cookware.
Never, never drink or cook with the water from your hot
water faucet. If you have an electric hot water heater the heat-
ing element releases metal. Even if you have a gas hot water
heater, the heated water leaches metals from your pipes. If your
kitchen tap is the single lever type, make sure it is fully on cold.
Teach children this rule.
(^46) Inhibition of Carcinogenesis by Dietary Zinc, Nature, Vol. 231,
No. 5303, pp. 447-448, June 18, 1971.