SELENIUM| What does Aristotle have to do with selenium and prostate cancer?
According to David Waters, a lot.
“As it turns out, more is not always better,” says Waters, paraphrasing Aristotle’s golden
mean, that moral sweet spot between the extremes of excess and deficiency. “With
selenium, it’s easy to over-supplement.”
Waters, a professor emeritus of veterinary clinical sciences and director of the Gerald
P. Murphy Cancer Foundation in the Purdue Research Park of West Lafayette, points
to one of his research team’s studies, whose results were reported in the peer-reviewed
scientific journal BioFactors.
In controlled laboratory experiments, selenium triggered the elimination of prostate
cells with the most genetic damage — a kind of “homeostatic housecleaning” process
that helps keep cancer at bay.
But that only happened at mid-range selenium levels, Waters says.
If you imagine the letter “U,” with one tip being very high selenium levels and the other
tip being very low, the ideal level seems to be the trough of the curve. “Measuring
selenium status and then titrating selenium levels to mid-range status would seem
to offer men a practical and informed approach, rather than blindly taking selenium
supplements and risking the downside of unnecessary over-supplementation,” he wrote
for the medical website Uro Today. | A.R. SULFUR | Spiraea alba, a shrub with
white flowers, and Spiraea tomentosa,
a shrub with pink flowers, are native to
much of the Midwest and Northeast
in the United States and have great
potential for landscape use. However,
the acidic soils of their wild habitats
are not the kind you’d find in urban
Midwestern landscapes, which typically
have neutral to alkaline soils. So Michael
Mickelbart, an associate professor of
horticulture, and colleagues evaluated
the growth of these shrubs in landscape
soils of different pH levels. Soil pH was
reduced by the addition of sulfur. While
the size of the shrubs was lower at
neutral pH, leaf color was not affected.
The research demonstrated that these
shrubs can be grown in typical Midwest
A Golden Mean for Prostate Cancer Prevention