Magnesium stearate and soybean oil are in a lot of the supplements. Do we need to avoid them?

No soybean oil, please. Mag stearate depends upon how they use it, what the quality source is, and how high they heat it up. The only supps I trust with mag stearate in them are the brands in this program, because I know their process keeps it at a safe level. Systemic Formulas doesn’t use it and instead uses leucine to lubricate their machinery.