A Sustainable Approach

As a doctor working in sexual health, I can't really help someone without looking at the rest of their health at the same time. Hormones, energy, mood, blood sugar, gut function - they all feed into desire, arousal, and how you feel in your own body. So eating habits often come up.

This post is the dietary advice I actually give my patients. I've written it out here because I refer people to it so often, and I'd rather they have it properly than jotted on the back of a script.

Here's the pattern I see: almost everyone who comes to me has already tried something. A fad diet. An exclusion diet. Cutting out a whole food group for a few weeks. It works for a while, then energy dips, the cravings come back, and the plan falls away.

What I advise instead is a lifestyle you can sustain, and you can get there gradually or all at once, whichever suits you. The point isn't a perfect diet for six weeks. It's small, consistent changes that hold up over years. That consistency is what actually shifts your weight, your energy, your gut, and yes, your hormones and your sex life.

Why food, hormones and your sex life are connected

This isn't just a nutrition article. What you eat directly shapes the hormones that regulate libido, energy, mood and sexual function, oestrogen, testosterone, insulin and cortisol all respond to what's on your plate. Poor blood sugar control and chronic inflammation are linked to lower libido, erectile difficulty, and hormonal imbalance in both men and women. You don't need a perfect diet to notice a difference, you need a consistent one.

The basics: build your plate around this, not a strict diet

Most meals should be built around:

• Non-starchy vegetables

• Lean protein

• Healthy fats

• High-fibre plant foods

And limit, rather than eliminate:

• Sugary drinks

• Sweets and desserts

• White bread, pastries and refined cereals

• Chips, crackers and highly processed snacks

• Large portions of rice, pasta and potatoes

When you do want carbohydrates, choose them with intention: vegetables, fruit, beans, lentils, chickpeas, whole grains in moderation, nuts and seeds.

Key insight: this is not a low-carb diet in the keto sense. It's a Mediterranean-style pattern with the refined, low-fibre carbs turned down.

Protein: the nutrient most people under-eat

Aim for roughly 20–30g of protein per meal. Protein preserves muscle mass, supports healthy ageing, improves fullness after eating, and helps with sustainable weight management.

Animal sources: fish and seafood, chicken and turkey, eggs, plain Greek yoghurt, cottage cheese

Plant sources: lentils, chickpeas, beans, edamame, tofu and tempeh, nuts and seeds

Try to bring plant protein into your week regularly rather than defaulting to red meat, and limit processed meats like sandwich ham, salami and bacon.

Healthy fats: not optional

Fat is often the first thing people cut when they want to lose weight, but healthy fats support heart health, brain function, hormone production and the absorption of key vitamins.

Build these in daily:

• Extra virgin olive oil

• Olives and avocado

• Nuts (almonds, walnuts, pecans, macadamias, pistachios)

• Seeds (chia, flax, pumpkin, sunflower, sesame)

• Oily fish, sardines, pilchards, salmon, trout, tuna, mackerel, at least twice a week

Fibre: aim for at least 30g a day

Most adults eat far less fibre than they need. Fibre feeds your gut bacteria, improves bowel function, lowers cholesterol, supports blood sugar control, and keeps you full for longer.

Good sources: vegetables, fruit, lentils, chickpeas, beans, oats, ground flaxseed, chia seeds, nuts and seeds.

A simple daily fibre boost:

• Breakfast: Greek yoghurt, berries, 1 tablespoon chia or flaxseed

• Lunch: a large salad with chickpeas, lentils or beans

• Dinner: at least half the plate as vegetables

• Snack: a piece of fruit and a handful of nuts

Feed your gut microbiome

Your gut is home to trillions of bacteria that influence digestion, immunity, metabolism and overall health, including hormonal balance.

Include one fermented food daily: plain or Greek yoghurt with live cultures, kefir, sauerkraut, kimchi, miso, tempeh.

Aim for 30 different plant foods a week. Research suggests a wider variety of plant foods supports a more diverse, resilient gut microbiome, different plants feed different bacteria. A single Mediterranean-style meal with lentils, onion, garlic, baby marrow, carrots, tomato and herbs can easily contribute six or more different plants.

The patients I see who make the most sustainable change aren't the ones who eliminate the most foods, they're the ones who add the most variety.

A simple plate guide

• ½ plate: non-starchy vegetables

• ¼ plate: protein

• ¼ plate: high-fibre carbohydrates (beans, lentils, whole grains)

• Add a source of healthy fat: olive oil, avocado, nuts, seeds or olives

Alcohol: what the research actually says

For years, moderate drinking, especially red wine, was framed as heart-healthy. That framing is outdated. The World Health Organization stated in 2023 that no level of alcohol consumption can be considered safe, pointing to cancer risk that begins at even light-to-moderate intake, with no identified threshold below which the risk switches off. A large 2024 UK cohort study following more than 135,000 adults over 60 for 12 years found that even modest drinkers had a higher risk of dying from any cause, including cancer and cardiovascular disease, than occasional drinkers. A 2025 global analysis of alcohol's health effects reached a similar conclusion on cancer and liver disease specifically.

Key insight: even one drink a day is now linked to increased risk of cancer, heart disease, liver disease and early death. If you drink, less is better than more, and none is safer than some.

Supplements: what to consider, and what needs a doctor first

Supplements aren't a substitute for the basics above, but a few have reasonable evidence behind them:

• Creatine: evidence supports around 5g daily for muscle, with some research on higher intakes for brain health, provided kidney function is healthy. Check with your doctor first if you have any kidney concerns.

• Whey or plant protein: a practical way to hit your protein target if you're training for muscle.

• Omega-3: reasonable evidence, particularly if oily fish isn't a regular part of your diet.

• A quality multivitamin: a "nice to have" for supporting cellular function and antioxidant defence, resources permitting.

• Collagen: helpful for certain joint conditions; the evidence for broader anti-ageing benefit is promising but not conclusive.

• Vitamin D: one of the most cost-effective interventions available if your levels are low, with meaningful potential benefit for bone, brain, hormonal and immune health. If your levels are low, speak to your doctor, they may recommend a higher-dose or compounded option tailored to your results, rather than a standard over-the-counter dose.

It's not just about food

Diet doesn't work in isolation. The following all influence how well any eating pattern actually performs for you:

• Well-controlled medical conditions and balanced hormones

• Avoiding toxins — alcohol, smoking, ultra-processed food

• Good sleep

• At least 2 litres of water a day, and cutting sugary drinks

• Movement — resistance training, aerobic exercise, and mobility work, as a lifestyle rather than a short-term fix

• Stress management

• Deep social connection

• A spiritual or reflective practice, if that's meaningful to you

Common Questions

Is this the same as keto? No. This is a Mediterranean-style approach with refined carbs reduced, not eliminated. You still eat fruit, whole grains and legumes, the focus is on quality and fibre, not near-zero carbohydrate intake.

How much protein do I actually need? A practical target is 20–30g per meal, adjusted for your body size, activity level and goals. If you're training to build muscle, you'll likely need more.

Is red wine actually good for my heart? Current research doesn't support that. Any perceived cardiovascular benefit from light drinking doesn't outweigh the cancer risk identified at the same intake levels, there's no safe amount from a cancer-risk standpoint.

Do I need to take a multivitamin? Not necessarily. It's a reasonable addition if you have the resources for it, but it doesn't replace a fibre- and protein-rich diet, think of it as a top-up, not a foundation.

How is my diet actually connected to my libido or hormones? Blood sugar swings, inflammation and nutrient gaps all affect the hormones involved in desire, arousal and energy. Diet alone won't fix a hormonal or sexual health concern, but it's often part of the picture, and one of the more controllable parts.

How do I know if this diet is actually working for me? Track what you eat for three days, get a second opinion from a professional, or ask your doctor to recheck markers like glucose, insulin, cholesterol and inflammation after a few months. For deeper personalisation, genetic testing is also an option.

The Bottom Line

You don't need a perfect diet, you need a consistent one. Feed your muscles with protein, your gut with fibre, and your microbiome with variety, and the rest, energy, weight, hormonal balance, and often libido, tends to follow. Small, repeated choices outperform short-term overhauls every time.

Taking the Next Steps

A quick note on where I fit in: I'm a doctor, not a dietitian. What you've just read is general. It's the approach I recommend to most people, most of the time. It won't be the perfect fit for everyone, and it isn't meant to replace advice built around you. If your situation is more specific than a blog can cover, or this feels too general for what you're dealing with, a registered dietitian is the right person to see. Certain medical conditions and medications also change what's advisable, so please treat this as a starting point rather than a prescription.

If you decide to eat this way and you want to know whether it's working for your body, I can run the relevant bloods: glucose, insulin, lipids, inflammatory markers and hormones, and use those results to tailor the advice to you. Diet is never one-size-fits-all, and your blood results show us how your particular body is actually responding to what you're eating. If you'd like to do that, you can book a consultation with me here.