This is the best way I can explain it.
When you take in a certain amount of testosterone a limited amount of the test is converted to estrogen by the aromatase enzyme. Every one's tolerance to active estrogen levels varies greatly. There are many guys like me that can run 500mg without an ai and just have bloat. There are some guys that are vary sensitive and even 250 can give them sore nips.
As you increase the dosages of test you increase the amount of estrogen being created. I think it's only like 2-3% of the test gets converted to estro, but estro is a very powerful hormone and doesn't require as high amounts to exert it's effects. So if like 3% of 250mg is being converted to estro then 500mg would be 3% which is double the 250's 3%. And so on.
so in a purely cutting cycle would you say it is a good idea to take a very very small dose of AI to combat that estrogen when taking testosterone ? i have a little adex left and I am debating if i should go with it next cycle