The Link Between Gut Health and Obesity – and What You Can Do About It
Posted By Author on April 4, 2025
According to 2022 data provided by the World Health Organization (WHO), one in eight people worldwide are living with obesity. Since 1990, adult obesity rates have more than doubled, while adolescent obesity rates have quadrupled. The data speaks for itself– obesity is a bigger problem than ever.
Now considered a chronic disease, obesity has harmful impacts on the body and its ability to carry out essential functions. Most patients are aware of obesity’s effect on heart and lung health, but fewer know of its direct link to your gut. While an expanding waistline may be easy to see, obesity’s link to your gut’s health is not quite so obvious.
Our gastroenterology specialists have shared everything you need to know, so read on to discover more about obesity’s role in gut health – and what you can do about it.
Understanding Obesity
Many assume that being obese is the same as being overweight, but the subtle difference between the two can be found in the body mass index. BMI is the measure of body weight relative to one’s height, used by healthcare providers to estimate how much body fat you have.
The higher the BMI, the higher the body fat – and the higher the risk of developing conditions like heart disease and Type 2 diabetes. BMI is used alongside other tests to determine if a patient is overweight (BMI greater than or equal to 25) or obese (BMI greater than or equal to 30).
What is Obesity?
Obesity, a chronic condition characterized by excess fat, is detrimental to your overall health and quality of life. Obesity is known to boost your risk of developing these health conditions:
Cardiovascular diseases
Type 2 diabetes
Depression
GI disorders
Arthritis
Sleep apnea
Certain cancers
Mood disorders
Alzheimer’s disease and dementia
How Does Obesity Affect the Gut?
A healthy gut hosts a thriving microbiome made up of bacteria that influence digestion, immunity, and brain health. But a poor diet can cause harmful bacteria to outnumber healthy ones, not only boosting the odds of obesity but resulting in unpleasant gastrointestinal symptoms like these:
As the number on the scale ticks up toward obesity, your gut’s natural environment gets thrown out of balance. This encourages further weight gain by limiting the gut’s ability to regulate energy and fat storage.
Connecting the Dots: Obesity and Common GI Conditions
Once simply considered to be excess weight, obesity is now known as a long-term disease – and a risk factor for other digestive disorders. Our GI doctors in Charleston, SC are equipped to treat the following conditions linked to obesity:
GERD
Gastroesophageal reflux disease, or GERD, occurs when the stomach’s contents flow back up into the esophagus or mouth. Obesity puts additional pressure on the abdomen, which prevents food from traveling along the GI tract as it should. Common GERD symptoms include indigestion, heartburn, vomiting, coughing, and a metallic taste in the mouth.
Gallstones
Gallstones are small, hard crystals found in the gallbladder. The gallbladder is the organ responsible for the storage and release of bile, a digestion aid produced by the liver. While small gallstones are not cause for concern, larger ones can lead to serious pain and a blocked bile duct.
Intestinal Diseases
A wide array of digestive issues can arise due to obesity, ranging from irritable bowel syndrome to Crohn’s disease. These conditions often include symptoms like abdominal pain, loose stools, reduced appetite, and more.
Combat Obesity and Take Charge of Your Health with Charleston GI
For many, conquering obesity can feel like an insurmountable challenge—but that’s why we’re here to help.
At Charleston GI, our experienced gastroenterologists near you understand that compassionate, comprehensive care is needed to reach your goal. And we’re here to provide just that!
As the largest independent GI clinic in the Lowcountry, our Charleston gastroenterology specialists are determined to help you get your health back on track. With some of the best GI doctors near you on call, our team delivers a higher standard of care– at four convenient Charleston, SC, area locations to choose from! Come see us in West Ashley, Mount Pleasant, Summerville, or Carnes Crossroads.
