You’d be hard-pressed to find a professional nutritionist who doesn’t recommend eating more vegetables. (In fact, leafy greens and sprouts are among the few foods that all nutritionists agree are healthy.) But as the summer months approach and interest in getting in great shape increases, an eye-opening 2015 Harvard study of diet and weight loss is making the rounds again.
SheFinds resurfaced the study over the weekend, reporting that researchers at the Harvard T.H. Chan School of Public Health studied the daily diets of approximately 130,000 adults over 20 years. Every four years, the scientists solicited food diaries of what participants had eaten every day for a week, and every two years, participants reported their exact weight. With these findings, the study was able to identify a category of vegetables that actually contributes to weight gain, inspiring exasperated sighs around the country.
With the granular data, they were even able to pinpoint the one vegetable that leads to the most weight gain—i.e., arguably the unhealthiest vegetable of them all. Curious to find out what it was? Keep scrolling to learn the number one worst vegetable for weight loss.
And the worst vegetable is…
According to Harvard’s report, participants who ate larger quantities of starchy vegetables like corn, potatoes, and peas were more likely to gain weight. “Corn was the worst, with two pounds of weight gained for every additional serving over four years,” SheFinds said. The reason? These starchy foods have higher glycemic loads, producing frequent, intense blood sugar spikes after they are eaten, which can ultimately make a person want to consume even more.
By contrast, the study found that participants who ate plenty of high-fiber vegetables like kale and string beans were likely to lose weight over time. (Get many of the same benefits with Garden of Life’s Raw Organic Superfood Fiber Supplement, $25.)
Despite these findings, we’re probably still going to indulge in a cob or two this summer. You?
This post originally appeared on Byrdie.