Health & Lifestyle

Can Toxic Relationships Affect Your Health? (The Best Diet In The World Starts Here)

The real reason you can’t lose weight has nothing to do with food. And science can prove it.

Right. I want you to think about the last time you really stuck to eating well. Drinking more water, less wine. Saying no to the biscuits. Actually cooking instead of ordering in at 9pm.

Now think about what was going on in your life at the time. Were you relaxed? Feeling good? Surrounded by people who lifted you up?

Now think about the times you completely fell apart. The times you ate an entire multipack of crisps and called it dinner. The wine that became a bottle. The takeaway that turned into a habit.

Were you stressed? Anxious? Dealing with someone who was absolutely doing your head in?

I thought so.

Here’s the thing nobody in the diet industry wants to tell you, because it doesn’t sell meal plans or protein shakes:

Your waistline might not be a food problem. It might be a people problem.

And there’s science to back that up. Proper, peer-reviewed, this-went-on-for-fifteen-years science.

A study following over 3,000 adults for 15 years found that people in negative relationships — where friends or family made unfair demands, criticised them, let them down, or simply got on their nerves — accumulated significantly more belly fat than those who didn’t. Not a little more. Significantly more. Over fifteen years. From people.

Not from chips. Not from a lack of willpower. From the wrong people being in their lives.

What Toxic People Actually Do To Your Body

When you’re stuck in a stressful relationship — whether that’s a controlling partner, a critical parent, a toxic friend, a nightmare colleague — your body goes into a state of chronic alert.

Your brain can’t tell the difference between “there’s a lion” and “she’s doing that passive-aggressive thing again.” It just sees: threat. And it responds accordingly.

Your adrenal glands pump out cortisol. Your heart rate goes up. Your muscles tense. Your digestion slows. Your body floods itself with glucose for fast energy, in case you need to run.

The problem is, you don’t run. You sit there, in the car, in the kitchen, on the sofa — simmering. And your body keeps pumping out cortisol, day after day, because the threat never actually goes away.

That’s chronic stress. And this is what it quietly does to you:

The Science Bit

Elevated cortisol encourages your body to store fat specifically around your abdomen — wrapping your internal organs. This visceral fat isn’t just an aesthetic issue. It’s the most medically dangerous type of fat, strongly linked to cardiovascular disease, type 2 diabetes, and certain cancers.

But it gets weirder. And this is the bit that completely blew my mind when I read it.

The Really Wild Bit

Clinically depressed patients who were barely eating — actually losing total body weight — were still accumulating visceral fat on their internal scans. They were in a calorie deficit. Wasting away visibly. And yet the dangerous fat around their organs was growing. Because the driver wasn’t food. It was cortisol.

Let that sink in. You can be eating very little and still gaining the most dangerous kind of weight, if your stress hormones are running the show.

And that’s before we get to what chronic stress does to the rest of you.

The Full Picture

Chronic stress affects wound healing, your immune response to illness and vaccines, your ability to fight off viruses, your sleep, your gut health, and raises your long-term risk of cardiovascular disease, type 2 diabetes, certain cancers and autoimmune conditions. And it contributes to depression and anxiety. This isn’t wellness blog fluff. This is published research.

Why Your Willpower Was Never The Problem

Every diet you’ve ever tried has basically assumed the same thing: that you are the problem. That you just need more discipline. More motivation. More willpower.

What an enormous, exhausting load of nonsense.

When cortisol is chronically elevated, it spikes your blood sugar, creates insulin resistance, and slows your metabolism — your body is literally conserving energy and storing fat as a survival response. At the same time, it drives cravings for high-calorie, high-sugar, high-fat food. Not because you’re weak. Because your brain is looking for the fastest source of soothing it can find.

The cigarette. The wine. The biscuits. The scroll through the takeaway app at 10pm. These aren’t moral failings. They’re a dysregulated nervous system doing exactly what it was designed to do — reach for relief.

You were never broken. You were just eating your feelings because someone kept giving you things to feel.

And no calorie counter in the world addresses that.

The Best Diet In The World (And It Starts With People, Not Food)

So here it is. The diet nobody sells you, because there’s no subscription model for it.

1. 1 Identify the chronic stressors in your life Not the work deadline or the car insurance renewal. Those are acute stresses — they pass. I’m talking about the people and situations that keep your nervous system in a permanent low hum of dread. The ones you tense up about before you’ve even picked up the phone.
2. 2 Start reducing their access to you This doesn’t always mean a dramatic exit. Sometimes it’s less contact. Shorter calls. Not attending every family event. Not responding to every message within thirty seconds. Grey rocking. Boundaries. Whatever it looks like for your situation — start shrinking the exposure.
3. 3 Give your nervous system something to actually recover with Sleep is not a luxury. It’s the primary way your cortisol resets. Protect it aggressively. Movement helps — even walking. Time in nature. Anything that signals to your body: the threat has passed. You are safe.
4. 4 Actively invest in relationships that feel easy The same study that linked negative relationships to belly fat also found that people with genuinely supportive relationships gained significantly less of it. Good people aren’t just nice to have. They are, quite literally, protective of your health.
5. 5 Then sort the food Once your cortisol starts coming down — and it will, when the source of stress reduces — this part becomes dramatically easier. Because the cravings lessen. The willpower comes back. Your body actually wants to cooperate.

What To Actually Eat (Simple, Not Smug)

No macros. No meal plans. No cutting out entire food groups and pretending you feel amazing about it. Just an anti-inflammatory, cortisol-supporting way of eating that works with your body instead of against it.

More of this

• Oily fish (salmon, mackerel, sardines)
• Leafy greens (spinach, kale, rocket)
• Blueberries, cherries, dark berries
• Nuts — especially walnuts
• Dark chocolate (70%+, not the whole bar)
• Whole grains — oats, brown rice
• Avocado
• Olive oil
• Magnesium-rich foods (bananas, dark choc, seeds)
• Water. Actual water.

Less of this

• Ultra-processed food
• Sugar (the hidden kind especially)
• Alcohol — it spikes cortisol the next day
• Caffeine after 2pm
• Seed oils in large amounts
• White refined carbs on an empty stomach
• Skipping meals (also spikes cortisol)

That’s it. No app required.

The Thing Nobody Tells You

We’ve been sold the idea that our bodies are problems to be managed. That weight is a maths equation. That if you just try harder, count better, want it more — you’ll crack it.

But your body is not a calculator. It’s a living system that responds to everything around it — including the people in your world, the relationships you’re in, the conversations that leave you feeling smaller than when they started.

The most radical act of self-care isn’t a green smoothie or a gym membership. It’s deciding that chronic stress is not a price you’re willing to pay. That certain people do not get a permanent seat at the table of your nervous system. That you deserve an environment in which your body can actually relax.

The best diet in the world has nothing to do with food. It starts with who you let into your life.

You were never broken. You were just trying to stay calm in a situation that wasn’t calm. That’s not weakness. That’s biology. And it’s completely fixable — starting today.

Vikki • howtofeelfuckingamazing.com

Your Questions Answered

Yes — and the research is clear. A 15-year study of over 3,000 adults found people in negative relationships accumulated significantly more belly fat than those in supportive ones. Chronic stress from toxic relationships elevates cortisol, damages the immune system, disrupts sleep, and raises the long-term risk of heart disease, type 2 diabetes and certain cancers.

Chronic stress keeps cortisol elevated, which tells your body to store fat around your abdomen, causes insulin resistance, slows your metabolism, and drives cravings for sugar and comfort food. It is not a willpower problem. It is a chemistry problem triggered by your environment.

The best diet in the world starts with reducing chronic stress — including removing or limiting toxic people from your life. Once your cortisol starts to normalise, supporting your body with anti-inflammatory foods (oily fish, leafy greens, berries, nuts, whole grains, olive oil) and cutting back on ultra-processed food, alcohol and sugar becomes dramatically easier.

Because chronic stress dysregulates the hormones that control hunger and willpower. Cortisol spikes cravings for high-calorie food. A stressed nervous system reaches for relief — food, alcohol, cigarettes — as a completely natural biological response. It is not a character flaw.

Yes. Research shows people with genuinely supportive relationships gain significantly less belly fat than those with negative ones. Removing chronic stress sources allows cortisol to normalise, sleep to improve, cravings to reduce, and your body to begin repairing itself.

I’m not a doctor, nutritionist or qualified health professional — just someone who has spent a lot of time researching this stuff and wants to share it with you in plain English. This post is for information and general interest only. Please speak to your GP or a qualified professional before making significant changes to your diet or if you have any health concerns.