About me


Being inspired by the effect of nutrition, lifestyle and mindset on our health, I am dedicated to help people on their journey to wellbeing. I believe in the power of knowledge and education; and I want to promote long-term health benefits by helping individuals to make informed health choices.

I guide you in creating more balance; in how you feel, how you function and sometimes how you think. First, by looking for signs of certain imbalances (based on symptoms and laboratory test results); and second, through the implementation of nutritional and lifestyle interventions. Your engagement, motivation and mindset are important in the process; and sometimes the road is smooth and sometimes rockier. Everyone has different needs and challenges, so I take the time to listen. I understand the value of communication, so you and I approach health as a team.

As a practitioner and a scientist, key points of my interest include our biochemistry, gut health, gut microbiome, blood sugar imbalances, hormonal imbalances and sleep quality – in relation to our nutrition, life style, stress management, our mindset and epigenetics. Our body is an amazing network of connections – one affecting another, therefore looking at different aspects can create better results. 

I come from Poland and right after completing my Biology MSc, I came to the Netherlands to continue my academic journey. I carried out doctoral research in molecular microbiology at the University of Groningen, earning a doctorate (PhD) in 2009. Then, I went on to work for one of the top biotech companies, being involved in clinical research and later in medical information. In 2015, I started an exciting new chapter in my life, by starting my own business and at the same time pursuing my passion for sharing knowledge and helping. I have completed education in basic medical knowledge, in nutrition, in dietary supplementation, in the field of functional medicine, and the basics of traditional Chinese medicine. I am registered as a healthcare provider (AGB-registration) and a therapist (at BACT). I constantly invest in my personal and professional development. I upgrade my knowledge by taking various courses and by reading scientific literature. In addition to individual consultations, I also provide consulting services for companies in the field of human but microbiome, nutrition and dietary supplements. Moreover, I had a privilege to (co)author publications and to provide my expertise in appearance of other readings. 

I use my academic, industrial and consulting experience to bridge the gap between theory and practice, to provide well-researched information and to share lifestyle interventions in a professional way with your best interest at heart. 

Learn more about health-related topics through my blog posts, workshops or consultations.  

Warm regards,

Dr. Joanna

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Lipase A gene transcription in Pseudomonas alcaligenes is under control of RNA polymerase Eσ54 and response regulator, LipR

Krzeslak, E. Papaioannou, R. van Merkerk, K. A. Paal, R. P.H. Bischoff, R. Cool, and W. J. Quax. FEMS Microbiol Lett., Apr 2012; 329(2):146-53

The role of PvdQ in Pseudomonas aeruginosa virulence under iron limiting conditions

 Nadal Jimenez, G. Koch, M. Wahjudi, E. Papaioannou, J. Krzeslak, T. Coenye, R. H. Cool, and W. J. Quax. Microbiology, Jan 2010; 156(1):49-59

Heterologous production of Escherichia coli Penicillin G Acylase in Pseudomonas aeruginosa

Krzeslak, P. Braun, R. Voulhoux, R. H. Cool and W. J. Quax. J Biotechnol., Jul 2009; 142(3-4):250-8

Pseudomonas as a microbial enzyme factory: the source of industrially potent enzymes and the host for heterologous enzyme production

J. Krzeslak. Doctoral Thesis. University of Groningen, April 2009

Lipase expression in Pseudomonas alcaligenes is under the control of a two-component regulatory system

Krzeslak, G. Gerritse, R. van Merkerk, R. Cool, and W. J. Quax. Appl Environ Microbiol., Mar 2008; 74(5):1402-11

Quorum-Quenching acylases in Pseudomonas aeruginosa

J. Krzeslak, M. Wahjudi, and W. J. Quax. In: Pseudomonas Volume 5: A Model System in Biology. Springer Netherlands, 2007, p 429-449

Polish edition of the book „The Gut Balance Revolution” by G. E. Mullin

 Polish book translation „Zadbaj o równowagę mikroflory jelitowej. Popraw odporność i schudnij raz na zawsze” by E. Kleszcz. Expert Consultant: J. Krześlak-Hoogland. Galaktyka Publisher, April 2016

Polish edition of the book „Missing Microbes” by M. Blaser

Polish book translation „Utracone Mikroby” by M. Golachowska. Expert Consultant: J. Krześlak-Hoogland. Galaktyka Publisher, April 2016

Polish edition of the book „The Good Gut” by E. Sonnenburg & J. Sonnenburg

 Polish book translation „Zdrowie zaczyna się w brzuchu by M. Golachowska. Expert Consultant: J. Krześlak-Hoogland. Galaktyka Publisher, October 2015

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