That is the one million dollar question.
I have absolutely no clue, why SARM - especially Ostarine - should cause estrogen related side effects. To be honest, the only place I'm reading about such sides is only here
(no offense or something like that). Even the evo or elite board I didn't find such reportings (on quick search). Normally, on these boards everything causes estrogen related side effects...
We only can assume that:
- everyone is different
- used dosage is different
- the start body values are suboptimal (high bodyfat for example)
- not the "real" Ostarine is used
Regarding to the last point: when GTx Inc. lauched their Enobosarm program and presented the first results, the chinese manufacturer (the whole commodities came/are from China) produced the first batches of Ostarine. But who knew he original formula? GTx made a patent of three VERY slightly different substances. No one knewed for sure, which one it was but they didn't care about it and sold their products to different companies.
Actually, the "real" substance is known and also it's production-procedures (because of the patent). Nevertheless, there is still no 100% safety. We are talking about "underground-products" and not about officiall, regulated and controlled pharmaceutical quality, officially made by GTx.
Therefore: for such adverse events you always should have an AI and a SERM on hands. Every. Singe. Time.
We also can't evaluate the truth behind every single single reported side effect (which should not happen). I don't want to blame anyone - we are all thankful for every told personal experiences - but we are here on the internet
There are too many interest represented...
Long story short: we can't be sure what we are consuming and even it's legit, unexpected things can happen (like two users with bad dreams, I don't think the majority had bad dreams on Ostarine..?). But generally, estrogen related side effect should not happen.
AI and SERM are the plan B.
Regarding to the second part of your post: hmm, competing for the same receptor is not bro-science. If you have two of the same substances with the same targed (AR) they will compete in any way IF there is only a limited number of AR (in this case). As you said right, you are able to run Ostarine and LGD together, even S-4 added if you want (not a recommendation). With the building of more muscle mass you will generate more cells which are responsible:
AR is expressed in several cell types in human skeletal muscle, including satellite cells, fibroblasts, CD34+ precursor cells, vascular endothelial, smooth muscle cells, and mast cells. Satellite cells are the predominant site of AR expression.
Therefore: SARM abuse (especially in stacks) have not the same effect in beginners as in advanced trained persons.
Thank you, you are welcome. I appreciate that.