A new study has come to the alarming conclusion that vitamin D supplements could have very bad side effect for teenagers who are struggling with weight.

Prescribing vitamin D to teens could lead to health complications such as an increase in cholesterol and triglycerides, according to a Medical News Today report.

The study finds that obese teens don’t get much benefit from vitamin D in terms of diabetes risk or heart health, and this finding indicates that taking it may even be counterproductive to their health or, at worst, endangering them long term.

The study was published in the journal Pediatric Obesity by researchers at the Mayo Clinic, which is examining obesity in childhood. Obesity has doubled among children and quadrupled among adolescents in the last three decades, according to the Centers for Disease Control and Prevention.

Past studies have suggested that perhaps a vitamin D deficiency has been associated with obesity and the medical complications that come with it, including cardiovascular disease and a resistance to insulin, resulting in many physicians recommending a high dosage of vitamin D to compensate for it — sometimes as much as 10 times the recommended rate.

But Dr. Seema Kumar, the researcher behind the study, couldn’t find any benefit from the supplements, but was able to find plenty of harms after four clinical trials and six studies in the last 10 years.

He said while it doesn’t prove that there is no link between vitamin D deficiency and chronic diseases in children, but there hasn’t been any evidence for it yet produced.

Vitamin D is most commonly received naturally in the form of sunlight and fish oil.

A recent study found that despite three months of boosting the vitamin D levels in teens, there wasn’t any change in body weight, body mass index, waistline, or even blood pressure.