About Lucy Mailing

Lucy Mailing is an MD/PhD student at the University of Illinois. She recently completed her PhD in Nutritional Sciences but continues to perform research on how diet and exercise impact the gut microbiome in states of health and disease. She has authored several peer-reviewed journal articles related to the microbiome and health and was named an Emerging Leader in Nutritional Sciences by the American Society for Nutrition in 2017. Lucy has also served as staff research associate for the Kresser Institute for Functional and Evolutionary Medicine since 2015. Lucy is the founder and sole author of NextGen Medicine, writing evidence-based articles about gut and skin health, nutrition, the microbiome, and exercise science. She is regularly invited to speak on gut health around the country and has been recognized as one of the most trusted experts in the integrative health space. Lucy plans to continue her training and begin her MD at the University of Illinois in 2020 after a year dedicated to her blog, one-on-one consultations with clients, and the launch of a gut-related startup.

Support our AIP study for eczema and psoriasis!

By |2019-07-02T00:49:53+00:00June 12th, 2019|

Support our AIP study for eczema and psoriasis! BY LUCY MAILING, MD/PHD STUDENT I am so excited to announce that I’ve teamed up with Rob Abbott and Angie Alt to perform a small pilot study of the autoimmune protocol (AIP) diet in eczema and psoriasis! This has truly [...]

The Best of DDW 2019

By |2019-07-02T02:04:45+00:00June 12th, 2019|

The Best of DDW 2019 BY LUCY MAILING, MD/PHD STUDENT A few weeks ago, I had the opportunity to attend Digestive Disease Week in San Diego, California! DDW is the largest international meeting on digestive health and gastroenterology, and it was great to take a break from writing [...]

Small intestinal dysbiosis underlies functional GI symptoms

By |2019-08-21T21:18:48+00:00June 5th, 2019|

Small intestinal dysbiosis underlies functional GI symptoms In an article published on my blog a few months ago, I argued that quantitative culture, the “gold standard” for diagnosing small intestinal bacterial overgrowth (SIBO), is outdated, that breath testing does not accurately diagnose SIBO, and that small intestinal dysbiosis is likely the [...]

Microbial network alterations identified in Crohn’s disease

By |2019-08-21T21:20:00+00:00May 11th, 2019|

Microbial network alterations identified in Crohn's disease A new study identifies specific alterations of the gut microbial network in Crohn’s disease! The microbiome has long been thought to be implicated in Crohn's disease (CD) and ulcerative colitis (UC), the two forms of IBD. After all, IBD patients tend to have altered [...]

Highlights from Experimental Biology 2019

By |2019-07-02T01:27:50+00:00April 22nd, 2019|

Highlights from Experimental Biology 2019 BY LUCY MAILING, MD/PHD STUDENT Two weeks ago, I attended Experimental Biology (EB) in Orlando, Florida, and enjoyed lots of great talks on the gut microbiota, prebiotics, gut barrier function, aging, and more! I finally had a chance to put together some of [...]

What the latest research reveals about SIBO

By |2019-07-02T02:04:06+00:00March 26th, 2019|Tags: , , , , , , , , |

What the latest research reveals about SIBO    BY LUCY MAILING, MD/PHD STUDENT Is small intestinal bacterial overgrowth really as prevalent as we think it is? Does breath testing accurately diagnose SIBO? Read on as I discuss several recent studies that challenge our assumptions about SIBO. “Science is not [...]

The benefits of comprehensive stool testing

By |2019-07-02T01:31:42+00:00January 31st, 2019|

The benefits of comprehensive stool testing BY LUCY MAILING, MD/PHD STUDENT This article was originally published in June 2018 and was updated in January 2019 to include the latest research and a more thorough analysis of available stool tests. I used to recommend Doctor’s Data CSAP, but now [...]

Gluten intolerance or gut dysbiosis? The role of the gut microbiome in celiac disease and non-celiac gluten sensitivity

By |2019-07-02T01:35:55+00:00December 29th, 2018|Tags: , , , , , , , , , , , |

Gluten intolerance or gut dysbiosis?  The role of the gut microbiome in celiac disease and non-celiac gluten sensitivity BY LUCY MAILING, MD/PHD STUDENT Disclosure: I went gluten-free in 2015 and found that it significantly improved my eczema and mental clarity. I have not yet formally attempted to reintroduce gluten, [...]

Probiotics: helpful or harmful for leaky gut?

By |2019-07-02T01:38:30+00:00November 10th, 2018|

Probiotics: helpful or harmful for leaky gut? BY LUCY MAILING, MD/PHD STUDENT Intestinal permeability, or “leaky gut”, is associated with a wide range of chronic conditions, including allergies, obesity, diabetes, inflammatory bowel disease, skin conditions, and more. People often turn to probiotic supplements to help heal a leaky gut. [...]

Is a high-fat or ketogenic diet bad for your gut?

By |2019-07-02T02:03:26+00:00October 16th, 2018|

Is a high-fat or ketogenic diet bad for your gut? BY LUCY MAILING, MD/PHD STUDENT Ketogenic diets are becoming increasingly popular for everything from weight loss to cancer therapy. Many people have expressed concern about the impact that this has on the health of the gut and the gut [...]

The complete guide to soil-based probiotics

By |2019-10-06T06:36:29+00:00September 21st, 2018|

The complete guide to soil-based probiotics  BY LUCY MAILING, MD/PHD STUDENT Soil-based probiotics have been touted for their ability to improve digestion, stimulate the immune system, and help maintain a healthy gut microbiota. On the other hand, some people believe that SBOs should be avoided at all costs, due [...]

Individualizing Medicine: Takeaways from CIMCON18

By |2019-07-02T02:08:02+00:00September 15th, 2018|

Individualizing Medicine: Takeaways from CIMCON18 BY LUCY MAILING, MD/PHD STUDENT This past week, I headed to Mayo Clinic in Rochester, Minnesota for the annual Individualizing Medicine Conference! It was my third year attending, and it’s been fascinating to see how the conference has evolved over the years. (You can [...]