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Matthew Cress is a dietitian nutritionist that specializes in complex health problems which include immune pathologies, nervous system dysregulation, muscle disorders, chronic infections, skin conditions, mental health problems, and digestive disorders.  

Matthew will help you understand the root cause of your illness, which systems in your body need support, and how ancestral nutrition and lifestyle have a strong positive impact on your healing. 

After your meeting you will be provided with a meal plan, a personalized supplement protocol, delicious recipes, and lifestyle recommendations. 

Matthew’s health specialties:
Immune System Pathologies


  • Chronic allergies, asthma, rhinitis, etc. 

  • Histamine intolerance, MCAS, etc.

  • Autoimmune diseases

  • Poor immunity resulting in chronic colds, flus, & other infections.

  • Chronic fatigue (including dysautonomia).

Skin Conditions

  • Acne - All kinds

  • Psoriasis 

  • Eczema

  • Dermatitis

  • Rosacea

  • Etc.

Viral, Bacterial, Parasitic,
& Fungal Infections


  • Viral: Acute Covid infections, long Covid complications, shingles, cold sores, etc. 

  • Bacterial:  SIBO, UTIs, Lyme, Travelers diarrhea, etc. 

  • Parasitic infections of all types. 

  • Fungal: Candida, yeasts, & other mold problems. 

Metabolic & Digestive Disorders

  • Thyroid diseases

  • Chronic Diarrhea or Constipation

  • SIBO & Bloating 

  • Oxalate dumping complications

  • IBS 

  • Crohn's disease


Matt's Specialties
Mental Health​

  • Anxiety

  • Depression

  • ADHD and procrastination troubles.

  • Brain fog 

  • Burnout and low motivation

Nerve & Muscle Disorders


  • Neuropathy 

  • Dysautonomia (including POTS) 

  • Fibromyalgia and chronic pain

  • Heart & blood pressure conditions. 

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About Me
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Meet Matt

Hello! My name is Matthew Cress and I am a licensed dietitian nutritionist originally from Michigan. 


My health was terrible for the first 27 years of my life. I was known as the sick kid growing up. I suffered from debilitating allergies, chronic colds, lots of mucus, multiple mood disorders that ran in the family such as ADHD, anxiety, endorphin deficiency syndrome, and dyslexia. I also suffered from 10 years of traumatic medication-resistant acne, IBS, and hypothyroidism. I put all of these conditions into remission through diet and lifestyle. Read my full healing story here.

As a former elite gymnast and national champion my experience also extends into the world of athletics. 


Now, I live in beautiful Lyon, France and my hobbies include going to the farmers market, making delicious stock or broth, and doing recreational gymnastics.


My goal with Cress Dietetics is to guide you on your healing journey.  

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