Broccoli sprout synergies

I was asked for examples of broccoli sprout synergies with supplements mentioned in Week 19 of Changing to a youthful phenotype with broccoli sprouts. I take supplements and broccoli sprouts together an hour or two before meals to keep meal contents from lowering sulforaphane bioavailability. Sulforaphane peaks in plasma between 1 and 2 hours after ingestion.

sulforaphane peak plasma

I started splitting broccoli sprout doses after reading the first study of A pair of broccoli sprout studies. The second study was Untargeted metabolomic screen reveals changes in human plasma metabolite profiles following consumption of fresh broccoli sprouts.

Those subjects ate only “a single dose of fresh broccoli sprouts (providing 200 μmol SFN equivalents) at 8 AM on study day 1.” A 200 μmol amount of sulforaphane is a 35 mg weight.

For comparison, my daily consumption is a worst-case 52 mg sulforaphane from microwaving 131 g of 3-day-old broccoli sprouts per Estimating daily consumption of broccoli sprout compounds. Every day for 22 weeks now. 🙂

The second study’s measurements through 48 hours produced this informative graphic and text:

“Of the features we identified using metabolite databases and classified as endogenous, eleven were significantly altered.

  • Glutathione (GSH) – a major intracellular antioxidant that conjugates with SFN during metabolism – was significantly decreased in plasma at 6, 12 and 24 hours following sprout intake.
  • GSH precursors glutamine (3 and 24 hours) and cysteine (12 and 24 hours) also decreased.
  • We observed significant decreases in dehydroepiandrosterone (DHEA) at 3, 6 and 12 hours.
  • Decreases in fatty acids reported here suggest that even a single dose of broccoli sprouts may alter plasma lipids in healthy adult populations.

While this study focuses largely on potential effects of SFN, broccoli sprouts contain many other bioactive components (e.g., indoles) that could be responsible for our observations as well as additional health benefits.”

Supplements I take twice daily with broccoli sprouts:

  • 1 gram L-glutamine for replenishment and other purposes;
  • 25 mg DHEA to replenish and other effects;
  • 15 mg then 50 mg zinc, which has a role in GSH metabolism;
  • 500 mg glucosamine (anti-inflammatory, crosstalk with Nrf2 signaling pathway);
  • 500 mg acetyl-L-carnitine (induces Nrf2-dependent mitochondrial biogenesis); and
  • 1400 IU then 2000 IU Vitamin D. A major portion of its effects is Nrf2 activation, like sulforaphane. A virtuous circle develops when taken with broccoli sprouts in that the Vitamin D receptor is a Nrf2 target gene inducible by sulforaphane, which then upregulates Nrf2 expression levels.

One of the things eating Boring Chicken Vegetable Soup twice a day does is replenish cysteine. I eat that and steel-cut oats (another cysteine source) separately from broccoli sprouts.

I take 1 gram flax oil with breakfast and dinner instead of with broccoli sprouts. Haven’t found relevant research on whether broccoli sprout compounds decrease omega-3 polyunsaturated alpha linolenic acid C18:3 as they do these six endogenous fatty acids.


Both studies investigated effects of fresh broccoli sprouts. Timing of their measured decreases and increases are different for me because I microwave broccoli sprouts up to but not exceeding 60°C (140°F).

A section of Microwave broccoli seeds to create sulforaphane highlighted metabolic differences among fresh broccoli sprouts, microwaved broccoli sprouts, and broccoli sprout supplements.

“A metabolic profile resulting from my current practices is probably between the Sprout and BSE (broccoli sprout extract) divided-dose statistics:

  1. Sulforaphane intake is greater than eating raw broccoli sprouts because microwaving 3-day-old broccoli sprouts creates sulforaphane in them before eating.
  2. Sulforaphane uptake from microwaved broccoli sprouts is quicker than eating raw broccoli sprouts. It may not be as immediate as taking sulforaphane supplements, which are usually powders.
  3. Sulforaphane dose from microwaved broccoli sprouts is less dependent on an individual’s metabolism than eating raw broccoli sprouts.
  4. Sulforaphane release from microwaved broccoli sprouts continues on to the gut as does eating raw broccoli sprouts. Sulforaphane release from supplements typically ends in the stomach.”

One thing I didn’t mention in that blog post was that glucoraphanin also increased by microwaving per Microwave broccoli to increase sulforaphane levels. A coauthor clarified a chart’s 60°C (140°F) glucoraphanin amount increased by 27% (2.78 / 2.18 μmol).

Metabolism of broccoli sprout glucoraphanin and other glucosinolates that aren’t preferentially hydrolyzed by microwaving and thorough chewing is assisted in the gut twice a day by:

  • 6 billion IU acidophilus; and
  • 750 mg fructo-oligosaccharides.

See Treating psychopathological symptoms will somehow resolve causes? for updates.


2 thoughts on “Broccoli sprout synergies

  1. Hi again, the decrease in GST is confusing to me. I was under the impression that DIM in the sprouts could induce expression of GST? Bit perhaps the observed effect of decrease in GST and DHEA is due to less need of these compounds? I am thinking that with lower inflammation the repairing and protective role of DHEA is in less demand as it is a counterbalancing hormone to cortisol.

    Liked by 1 person

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