Fertility and Green Tea - Conflicting Information

I've written before about whether or not green tea can enhance fertility. Here is an interesting article that gives reasons why green tea may both help or hurt fertility. I'll admit, it's confusing. In my case, I did drink some green tea while trying to conceive, however I probably didn't drink it in the amount that would make a difference either way. Read more:

Green Tea and Making Babies (www.greenteaphd.com)

From the article:

How can drinking green tea increase fertility?

A study done by the Kaiser Permanente Medical Care Program in
Oakland, California revealed that the chances of conceiving
doubled for woman who daily drank more than one- half cup of
green tea containing caffeine (American Journal of Public
Health, 1998). Because this wasn't the case for the other tested
caffeinated beverages, caffeine wasn't deemed the causing agent.
Some credit was given to the possibility that the polyphenols
and hypoxanthine, compounds found in tea, resulted in a greater
number of viable embryos, and increased maturation and
fertilizability of oocytes.

Another conclusion of this study was that the healthy lifestyle
of many green tea drinkers, such as regular exercise and
decreased smoking and fat intake, might also play a role in the
enhanced fertility levels of the test subjects.

How can drinking green tea decrease fertility?

Tannic acids, an element found in green tea, have been shown to
cause fertility problems and greater chances at miscarrying.

While not an "initial" fertility situation, rumor has it that
EGCG, the main disease-fighting antioxidant known as catechins
in green tea that have been found to impede the growth of
tumors, might also effect the blood vessel growth of a
developing embryo.

Another post-fertility issue related to an excessive intake of
green tea involves the increased rate of birth defects.

Past studies have concluded that coffee consumption increases
the risk of miscarriages and that caffeine intake enhances the
negative effects of alcohol intake on fertility. While not
directly related to green tea, caffeine is the potential cause
of such problems.