The Testosterone Blueprint
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Avocado
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Avocado

A rare food combining monounsaturated fat, magnesium and boron — the last being a trace mineral shown to raise free testosterone.

At a glance

Key nutrientsMonounsaturated fat · Boron (raises free testosterone) · Magnesium (~29 mg/100g) · Potassium (~485 mg) · Vitamin E
Feel-good effectSatisfying, creamy fullness and steady, slump-free energy
Best formFresh, ripe; half to a whole avocado
Who it helps mostAnyone on a low-fat diet; those wanting boron and healthy fats together
EvidenceModerate–strong · healthy fat supports hormone production; boron has human evidence for free testosterone

Why it matters

Avocado is unusually well-suited to hormone health because it brings together several things that matter in one creamy package. Most importantly, steroid hormones — including testosterone — are built from fat, and very low-fat diets are associated with lower testosterone, so the monounsaturated fat in avocado directly supports hormone production. On top of that, avocado is one of the better food sources of boron, a trace mineral that human studies have shown can increase free (usable) testosterone and reduce inflammation. Add magnesium and potassium, and the avocado is a genuinely well-rounded hormone food.

What's inside

Monounsaturated fat provides the raw material for steroid-hormone production and helps absorb fat-soluble vitamins. Boron is the standout trace mineral — small human studies show supplemental boron can raise free testosterone and lower SHBG and inflammation, and avocado is a useful dietary source. Magnesium (~29 mg per 100 g) supports free testosterone and sleep, potassium (~485 mg) supports blood pressure, and vitamin E protects hormones from oxidative breakdown.

For men

For men, avocado hits two hormone levers: the healthy fat supplies the building blocks for testosterone production, and the boron has human evidence for raising the free, usable fraction of testosterone while lowering inflammation. The magnesium adds further support for keeping testosterone available. It's one of the more directly hormone-relevant fats you can eat, and satisfying enough to make a habit.

For women

For women, avocado's healthy fat supports the production of all the steroid hormones (estrogen and progesterone included), and the magnesium eases premenstrual symptoms, sleep and stress. The fibre and fat together steady blood sugar and satiety — helpful for the insulin balance behind female hormonal stability — and vitamin E supports skin. A nourishing, balancing food across the cycle and into menopause.

How to eat it

Eat it fresh and ripe — half to a whole avocado is a typical serving. Mash it onto wholegrain toast, add it to salads and grain bowls, blend it into smoothies for creaminess, or make guacamole. Its fat also helps you absorb the fat-soluble nutrients in the vegetables it's eaten with, so it's a smart partner for a salad. No cooking needed, which preserves everything.

Worth knowing

Avocado is calorie-dense (because of the healthy fat), so portion it sensibly if you're watching calories — half to one is plenty. There's no real downside otherwise; it's a whole food whose fat is the beneficial kind. For the boron specifically, avocado is a useful contributor rather than a megadose, so think of it as part of a varied diet rather than a standalone testosterone treatment.

Bottom line

Avocado is a standout hormone fat — monounsaturated fat to build testosterone from, plus boron with human evidence for raising free testosterone and magnesium to keep it available — all in one satisfying, creamy food.

In the book

Chapter 10 · What Works

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.