The prevalence of obesity in adults in the United States was 41.9% in 2017-2020, and has increased 11.4% from 1999-2000, according to the Centers for Disease Control and Prevention. In kids and teens, the prevalence of obesity is 19.7% in 2017-2020.

Obesity prevalence can be higher depending on the location, with the Midwest and South having the highest rates of obesity, according to CDC data.

People who are overweight or obese are at an increased risk for many serious health conditions, including cancer, heart disease, stroke, high blood pressure, gall bladder disease, osteoarthritis, mental illness and other health problems.

For people whose diet is currently high in sugar substitutes, Ashton said she recommends minimizing their use, while acknowledging it can take time to do so.

"Right now we need more research to conclusively know what the impact it has on our health is, but the results of this study suggest that there is an impact on our metabolic health, and our overall health, and our gut -- all important," she said. "So, I think my recommendation would be minimize their use, don't rely on them as a harmless, completely free-for-all when it comes to what we are putting in our foods, and take some time to re-train your taste buds."

She continued, "That does take time but it is possible, and you can wean yourself away from that sweet tooth."