Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| DHEA (Dehydroepiandrosterone) | DIM (Diindolylmethane) | |
|---|---|---|
| Category | Supplements | Supplements |
| Standard Dose | 25-50mg daily (men); 10-25mg daily (women) | 100-200mg DIM daily |
| Timing | Morning (mimics natural circadian peak). With food. | With meals (fat enhances absorption). Consistent daily dosing for estrogen metabolism modulation. |
| Cycle Duration | Ongoing under supervision with regular blood monitoring (DHEA-S, testosterone, estradiol, PSA in men) | ongoing or cycle 8-12 weeks on, 4 weeks off |
| Evidence Level | moderate_human | moderate_human |
DHEA is the most abundant circulating steroid hormone, produced primarily by the adrenal zona reticularis. It serves as a precursor for both androgens (testosterone, DHT via 3beta-HSD and 17beta-HSD) and estrogens (estradiol, estrone via aromatase). DHEA-S (sulfated form) acts as a neurosteroid, positively modulating NMDA receptors and antagonizing GABA-A receptors (cognitive enhancement/alertness). It also modulates immune function (enhances Th1 immunity, IL-2 production), supports bone mineral density via estrogenic metabolites, enhances insulin sensitivity via PPAR-alpha activation, and opposes cortisol's catabolic effects (DHEA:cortisol ratio is a stress/aging biomarker).
25-50mg daily (men); 10-25mg daily (women)
Morning (mimics natural circadian peak). With food.
Ongoing under supervision with regular blood monitoring (DHEA-S, testosterone, estradiol, PSA in men)
DIM is formed from indole-3-carbinol (I3C, from cruciferous vegetables) via acid condensation in the stomach. It modulates estrogen metabolism by promoting the 2-hydroxylation pathway (producing 2-hydroxyestrone, considered 'protective' estrogen) over the 16alpha-hydroxylation pathway (producing 16alpha-hydroxyestrone, considered proliferative) and the 4-hydroxylation pathway (producing 4-hydroxyestrone, genotoxic). DIM binds the aryl hydrocarbon receptor (AhR), inducing Phase I (CYP1A1, CYP1A2) and Phase II enzymes that facilitate estrogen detoxification. It also inhibits aromatase and has anti-androgen receptor effects (competitive binding).
100-200mg DIM daily
With meals (fat enhances absorption). Consistent daily dosing for estrogen metabolism modulation.
ongoing or cycle 8-12 weeks on, 4 weeks off
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