Spinach & leafy greens

Why it matters

Leafy greens — spinach, chard, rocket and their relatives — are foundational hormone foods, and magnesium is the reason. Most people fall short of magnesium, and the shortfall matters: magnesium helps keep testosterone "free" and biologically active rather than bound to the protein SHBG, where it can't do its job. A 2011 study even found that magnesium supplementation raised both free and total testosterone, more so when combined with exercise. Greens deliver that magnesium alongside nitrates for blood flow, iron, folate and a wall of antioxidants — a lot of hormone support for almost no calories.

What's inside

Magnesium (~79 mg per 100 g raw, much higher cooked) is the headline, supporting free testosterone, sleep and stress. Dietary nitrates convert to nitric oxide, widening blood vessels and improving circulation. Iron and folate address common deficiencies, vitamin K supports bone health, and a dense mix of antioxidants (lutein, beta-carotene) protects cells — including hormone-producing ones — from oxidative stress.

For men

The magnesium link is the standout: by helping keep testosterone unbound and active, adequate magnesium supports usable testosterone levels, and the effect is amplified by exercise. The nitrates improve blood flow (relevant to circulation and performance), and the antioxidants protect the cells that make hormones. Greens are a near-free, daily way to cover one of testosterone's key minerals.

For women

For women, leafy greens are a powerhouse: iron and folate target the deficiencies most common in women, magnesium eases premenstrual symptoms, sleep and stress, and vitamin K plus antioxidants support bones and skin. The fibre supports the gut-estrogen connection. Across the cycle and into menopause, a daily serving of greens is one of the simplest, highest-value habits.

How to eat it

Aim for a generous serving most days — raw in salads and smoothies, or lightly cooked, which actually concentrates the minerals (a big pan of spinach wilts to a few spoonfuls). Pair with a vitamin-C source to boost iron absorption and a little healthy fat to absorb the fat-soluble antioxidants. Vary your greens (spinach, kale, chard, rocket) for a broader nutrient spread.

Worth knowing

Spinach is high in oxalates, which can contribute to kidney stones in susceptible people and slightly limit calcium and iron absorption — varying your greens and cooking them helps. If you're on blood thinners, the high vitamin K is worth discussing with your doctor for consistency. For most people, greens are about as close to a free win as food gets.

Bottom line

Leafy greens are a foundational hormone food — their magnesium helps keep testosterone free and active, with iron, nitrates and antioxidants on top — making a daily serving one of the easiest, cheapest wins on the list.