Ephedra
Ephedra, a herbal supplement once popular for weight loss and boosting metabolism, can be surprisingly dangerous.
Casavant says this supplement can "raise blood pressure to dangerous levels and cause irregular heart rhythms. Consuming ephedra strains the cardiovascular system and damages the body's ability to properly metabolize nutrients and oxygen."
Hydroxycut
Hydroxycut contains high levels of caffeine and other stimulants, which can lead to increased heart rate and blood pressure.
Casavant explains how this can affect the entire body, including your metabolism's ability to process food: "Hydroxycut, which contains compounds like yohimbine that act as stimulants, raising heart rate and blood pressure. This stresses the body and inhibits the body's ability to burn fat and process foods efficiently."
Creatine supplements in high doses
Creatine supplements are popular among athletes and bodybuilders for enhancing muscle performance and strength. However, taking creatine in high doses can potentially hurt your metabolism and overall health for several reasons.
"Creatine supplements in high doses, which can damage the kidneys by causing dehydration and impaired kidney function. Damaging the kidneys inhibits their ability to filter waste and break down proteins, fats, and carbohydrates in the diet," he notes.
To minimize these risks, it is important to follow recommended dosage guidelines and consult with a healthcare professional before starting creatine supplementation, especially if you have any pre-existing health conditions or concerns.