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Brussels sprouts
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Brussels sprouts

A concentrated cruciferous vegetable delivering the same estrogen-metabolising compounds as broccoli, with extra fibre and vitamin K.

At a glance

Key nutrientsIndole-3-carbinol / DIM · Vitamin K (~177 µg/100g) · Vitamin C · Fibre · Folate
Feel-good effectThe light, regular digestion that comes from a fibre-rich cruciferous habit
Best formRoasted or lightly steamed; halve them to cook evenly without overcooking
Who it helps mostAnyone managing estrogen balance; those wanting more cruciferous variety
EvidenceModerate · same I3C/DIM mechanism as other cruciferous vegetables

Why it matters

Brussels sprouts are essentially broccoli's concentrated cousin — small, dense cruciferous buds carrying the same estrogen-metabolising compounds, often in good quantity. They bring indole-3-carbinol and DIM to support healthier estrogen processing, plus an unusually high dose of vitamin K for bones and a hefty serving of fibre. Long unfairly maligned (mostly thanks to decades of overboiling), properly cooked Brussels sprouts are one of the tastiest and most useful vegetables for hormone balance.

What's inside

Like other crucifers, Brussels sprouts supply indole-3-carbinol and DIM to support estrogen metabolism, plus sulforaphane for antioxidant and detoxification support. They're notably high in vitamin K (~177 µg per 100 g) for bone health, rich in vitamin C and folate, and dense in fibre that feeds the gut bacteria involved in clearing estrogen. A small serving punches well above its weight.

For men

For men, Brussels sprouts offer the same estrogen-balancing benefit as broccoli — supporting the clearance of excess estrogen to help maintain a healthier testosterone-to-estrogen ratio — with extra fibre and vitamin K. As a roasted side they're an easy, flavourful way to get more cruciferous vegetables into the week.

For women

For women, the estrogen-metabolism support is again the headline, useful wherever symptoms stem from estrogen excess, while the high vitamin K supports the bones that matter increasingly through menopause. The fibre supports gut and estrogen health together. Variety across cruciferous vegetables broadens the benefit, and sprouts are an easy addition.

How to eat it

Roasting is the game-changer: halve them, toss in olive oil and roast until caramelised and crisp-edged — utterly different from the boiled grey version. Light steaming or shredding them raw into slaws also works. As with all crucifers, avoid prolonged boiling, which destroys both the flavour and the active compounds. Halving them helps them cook quickly and evenly.

Worth knowing

The same cruciferous caveats apply: they can cause gas while your gut adjusts, and the high vitamin K is worth keeping consistent if you're on blood thinners. Extreme intakes can affect thyroid function in iodine-deficient people, but normal portions are fine. Cook them well (roasted, not boiled) and they're a genuine pleasure, not a punishment.

Bottom line

Brussels sprouts deliver broccoli's estrogen-balancing compounds in concentrated form, with bonus vitamin K and fibre — and roasted properly, they're one of the most enjoyable hormone-friendly vegetables you can eat.

In the book

Chapter 10 (men) · Chapter 17 (women)

Read the full chapter →

Educational information, not medical advice. Foods affect people differently — if you have a medical condition, are pregnant or breastfeeding, or take medication, talk to your doctor before making big dietary changes. Some links are affiliate links — if you buy through them we may earn a small commission, at no extra cost to you.