Be wary if immediate, effortless or guaranteed results are
promised.
Look for telltale words and phrases such as "breakthrough,"
"miracle," "secret remedy," "exclusive," and "clinical studies prove
that..."
Beware of promotions for a single product claimed to be effective
for a wide variety of ailments.
Don't forget that, unlike scientists and health professionals,
quacks do not subject their products to the scrutiny of scientific
research. The quack simply thrusts a product onto the market in
order to get your money.
Be cautious of money-back guarantees, for a guarantee is only as
good as the company that backs it.