The only risks from HRT are that your medical risk profile undergoes a sex change. In other words, your risks for various diseases flips from the male-level risks to the female-level risks, or vice versa. However, in some circles, this simple risk profile flipping gets slandered as some horrible side effects that must be avoided at all cost.

No doctor has ever told an otherwise healthy cis man to go on testosterone blockers simply to lower their long-term heart attack risk. But trans men get fear mongered about the heart attack risk of testosterone, when all it does is raise their risk closer to the male range than the female range.

It's utter horse shit. Obviously if you take like, 10x the recommended dose, then you start getting into real risks. But HRT is an incredibly user-friendly set of medications to DIY. They're very forgiving medications. Hell, trans women can take 10x the regular doses for months and have no negative effects.