Why Fat Is Your Hormones' Best Friend (Not The Enemy)

‍Let's park the idea that fat is bad. It isn't, and if you're a woman navigating perimenopause, menopause, or just trying to keep your cycle balanced, you might not be eating enough of it. Fat isn't just fuel. It's the raw material your body uses to make oestrogen, progesterone and testosterone. Get your fat intake wrong, and your hormones have nothing to work with.

Saturated fat

This is the fat with the worst reputation, found in animal fats and coconut oil. Here's the controversial bit, because it goes against decades of public health messaging: dietary saturated fat doesn't raise cholesterol the way we've been told. And crucially for hormone health, cholesterol is the starting molecule your body converts into every single sex hormone you make. Cut it too hard and you can blunt your own hormone production.

The fats that genuinely cause harm are trans fats, which stiffen cell membranes (including the receptors your hormones need to bind to) and worsen your cholesterol ratio. These show up naturally in small amounts in dairy, but mostly in processed foods like margarine and hydrogenated oils.

Monounsaturated fats

Think olive oil and the Mediterranean diet. Women in Greece and Italy, who eat plenty of this fat, have some of the lowest rates of heart disease in the world, and cardiologists increasingly recommend this pattern of eating. For women in perimenopause especially, protecting cardiovascular health becomes more important as oestrogen's protective effect on the heart declines.

Polyunsaturated fats

These are your omega-3s and omega-6s, the essential fatty acids your body cannot make itself. You have to get them from food or a supplement. They're directly involved in building cell membranes, regulating insulin, calming inflammation, supporting mood and memory, and yes, producing hormones.

As a rule, omega-6 isn't inherently "bad," but the ratio between omega-6 and omega-3 matters enormously. Historically we ate somewhere between 1:1 and 4:1. Thanks to processed food, vegetable oils and conventionally raised meat, the modern ratio is often 20:1. An imbalance like this drives inflammation, which is a major (and often overlooked) contributor to worsening perimenopausal symptoms, irregular cycles, and increased risk of the conditions below:

• Inflammatory and autoimmune conditions

• Weight gain, particularly around the middle

• Heart disease

• Insulin resistance and diabetes

• High cholesterol

• Increased cancer risk

Why fat matters so much for your hormones

• It's your most efficient energy source, gram for gram twice as effective as carbohydrate.

• Every cell membrane in your body is built from fat, and your brain is 60% fat.

• Your sex hormones, oestrogen, progesterone and testosterone, are steroid hormones made from cholesterol and fat. No fat, no raw material.

• Fat regulates inflammation, mood and nerve function, all of which fluctuate through the menstrual cycle and shift again in perimenopause.

• Fat helps you absorb the fat-soluble vitamins A, D, E and K, all of which support hormone metabolism and bone health as oestrogen declines.

• Adequate fat intake is linked to more stable blood sugar, which matters enormously for women whose insulin sensitivity changes around perimenopause.

My favourite hormone supporting fats

AVOCADOS/AVOCADO OIL Rich in vitamin E and monounsaturated fat, and genuinely versatile. Slice it, mash it, love it.

NUTS Packed with magnesium (a mineral most women are short on, and one that supports progesterone production) and vitamin E. A small piece of fruit with a handful of nuts or a spoon of nut butter, makes a perfect blood-sugar-friendly snack.

OILY FISH The richest source of omega-3, which is a building block for your sex hormones.

SEEDS If fish isn't part of your diet, seeds are your best plant-based route to omega-3. Ground flaxseed and chia are rich in ALA, the plant form of omega-3, while hemp seeds add magnesium and zinc, both useful for progesterone production. The catch is conversion: your body has to turn ALA into the more usable EPA and DHA that fish provide ready-made, and this process is often inefficient. An algae-based omega-3 supplement is a good backup if seeds are your main source.

OLIVE OIL Use a good cold-pressed organic oil for dressings rather than cooking. High heat oxidises it, turning a hormone-friendly fat into an inflammatory one.

Feeling like your hormones could use some support?

If your cycle, energy, or symptoms just don't add up, let's talk. Book a complimentary 45-minute Hormone Health Review and I'll help you figure out where to start. Book your call here