I have been doing some research on Soy lately as I have been contemplating trying it to see if I see any changes.
Up until now I have avoided soy as I had heard it may impact fertility, but interestingly I'm now finding a lot of conflicting reports and some that say that soy is actually HELPING women fall pregnant.
I found this interesting article (reprinted from TwoWeekWait) which had this to say about Soy Isoflavones.
"TTC Trend Watch ~ Oh Joy! Another Soy BFP!
If you've been surfing TTC boards online recently, you've probably run across several posts from women proclaiming the mighty power of "Soy Isoflavones." If not, you are probably thinking "Soy Isowhat?" Yes, my TTC friends, the underpriviledged step sister to the infamous Clomid pill has made her big stage debut... and she's garnering some impressive reviews. But before you stop reading the rest of this article and burn rubber to the nearest vitamin store, let me encourage you to research it for yourself before trying any new supplement regimen. (And as always, you should consult your doctor trying anything new.) But I digress...
"Soy Isoflavones" is a natural plant derived phytoestrogen (phyto means plant), which is an anti-estrogen, just like Clomid. Both are known as SERMs (Selective Estrogen Receptor Modulators). It works by fooling your brain into thinking its estrogen levels are low. This causes your body to reslease more FSH & LH which helps stimulate follicle production (same as Clomid). You take Soy Isoflavones, like Clomid, on CD 1-5 or 2-6, or 3-7 or 5-9. It is not thought to cause infertility if it is only taken for 5 days a month. There is not much published information available on it regarding TTC, because it is "natural", not patented by the pharmaceutical companies, and not FDA approved. Most doctors will also not recommend it for this reason.
Recently, many women on FertilityFriend.com have been taking 150-160mg a day for 5 days at the beginning of the menstrual cycle (on days previously mentioned). Side effects reported are similar to Clomid. These vary from increased number of headaches to hot flashes. It has been suggested that taking the dosage before bedtime lessens the side effects.
I was doing some research on FertilityFriend.com to uncover just how many girls have recently conceived while on Soy Isoflavones and what days they took the supplement. I found a girl who took it on CD 1-5, 200mg Soy Isoflavones, and she got a strong BFP at 15dpo that cycle. Her chart can be viewed here. Her HCG levels at 15dpo were 443 and at 18dpo HCG 1,347. Impressive. I found a survey on FF that was interesting as well:
What was interesting is that 75% of the women who tried Soy Isoflavones got a BFP in their FIRST cycle trying. I checked the survey more recently and the number has jumped to 77% since I took the screenshot.
While Soy Isoflavones can help bring on an earlier or stronger Ovulation for these women, I must note that in some women it did not help at all. Just like Clomid doesn't always work for everyone. Right now there are a lot more women trying Soy Isoflavones so I will continue to monitor their progress and report back any news I find.
written by Elle (Founder of TwoWeekWAIT.com)"
Interesting huh! I might try it next cycle to see what happens!