The nutritionist behind
Effective Nutrition

Irma Rendón

Nutritionist and hormone specialist for women who are done with diets

At 25, I gained 12 kilos in less than a year, and no one could tell me why.

I was already deep in the corporate world. Busy, stressed, eating what I thought was "fine." My doctors had no clear answers. My nutritionist at the time gave me a meal plan that didn't stick. And in the back of my mind was a fear I'd carried for years: my mother, my grandmothers, my aunts, all of them had struggled with their weight their whole lives. I genuinely believed it might just be my destiny.

But I couldn't accept that. So I did what felt most natural: I started studying. Physiology textbooks, nutrition research, every theory I could find. I wanted to understand what my body was actually doing, and why.

A year later, I had lost all the weight. Not through restriction or willpower, but because I finally understood how to eat in a way that worked for my hormones and my body. That knowledge never left me.

I went on to have two healthy pregnancies, at 32 and 35. I gained exactly 9 kilos each time and lost it within four weeks. Through it all, I maintained the same weight, energy, and vitality I had built in my twenties.

For 20 years I stayed in the corporate world, watching colleagues go through exactly what I had. Struggling with weight, fatigue, hormonal imbalance, and a healthcare system that rarely gave them real answers. I kept thinking: I know what's missing here.

So I went back to school. I earned my certification as a Nutritional Therapist, then completed a postgraduate degree in Advanced Nutrition at London South Bank University (LSBU). Not because I needed a career change, but because I had something worth teaching.

Today I work with women who are where I once was: confused, frustrated, and told that what they're experiencing is "normal." My approach is built on three things:

I specialise in sustainable weight loss, hormonal balance, and perimenopause nutrition — working with clients in Stockholm, across Sweden, and online worldwide. I don't give you a plan to follow. I teach you how to eat, so you understand your body well enough to never need to start over again.

Because this knowledge changed my life. And it can change yours.