Is dark chocolate really the healthier choice? New study reveals concerns

Aug 16, 2023

1 min

Melissa Melough

For those who love chocolate, dark chocolate is often seen as the "better" or "healthier" option. But is it really?


This past December, Consumer Reports analyzed 28 dark chocolate bars from a variety of brands and found that 23 of them contained concerning levels of lead, cadmium or both.



Melissa Melough, an assistant professor of behavioral health and nutrition at the University of Delaware, recently told The New York Times: “If you’re a regular consumer of these dark chocolates, I would be concerned."


This concern is especially heightened if one is pregnant, breastfeeding or have a child who enjoys dark chocolate. 


For more on why dark chocolate may be concerning, reach out to Melough by clicking on her profile. 


Connect with:
Melissa Melough

Melissa Melough

Assistant Professor, Department of Health Behavior and Nutrition Sciences

Prof. Melough studies the interrelationships of nutritional and environmental factors influencing human health.

NutritionEpidemiologyPublic HealthMolecular EpidemiologyCancer Epidemiology

You might also like...

Check out some other posts from University of Delaware

2 min

Empowering independence: Blue Envelope program facilitates safer communication between drivers with disabilities and police

University of Delaware, in close collaboration with Delaware State Police, the Delaware Association of Chiefs of Police, the Office of Highway Safety, and the Delaware DMV, has co-developed the Blue Envelope Program – now launched statewide as of Aug. 26, 2025. The program offers no-questions-asked, no-ID-required, free envelopes that drivers with disabilities (including communication differences, sensory needs, mobility limitations, or other differences) can keep in their vehicle. The envelope includes space for emergency contact or medical notes, instructions for law enforcement and tips to ensure safe, respectful, clear exchanges during traffic stops. The University of Delaware Center for Disabilities Studies helped review and approve the content and design to ensure inclusivity and accessibility. UD experts – including Sarah Mallory (Associate Director of the Center for Disabilities Studies) and Alisha Fletcher (Director, Delaware Network for Excellence in Autism) – are available to speak about how the program supports an underserved and underrepresented group and improves outcomes in law enforcement encounters. Why This Matters: Traffic stops can be stressful for drivers with disabilities and can lead to misinterpretations or heightened risk. The Blue Envelope helps reduce misunderstandings while preserving dignity and safety. Delaware joins around 10 other states (including Maine, Massachusetts, New Jersey, New York, Rhode Island, and Vermont) in adopting a traffic-stop communication aid for drivers with disabilities This is a practical, no-barrier solution that promotes equity, accessibility, and respectful law enforcement practices. To speak with either Mallory or Fletcher to learn more about the program's development, impact and what’s next, email mediarelations@udel.edu.

2 min

Spitting image: What the blunder by Philadelphia Eagles' Carter can teach us about teams

Social media caught fire when Philadelphia Eagles' defensive tackle Jalen Carter got tossed for spitting on Dallas Cowboys' quarterback Dak Prescott before the first snap of this year's NFL season opener. While the impact on the game was obvious, what unfolded on the field of play has lessons for the workplace and the boardroom. The University of Delaware's Kyle Emich can talk about the parallels between the two worlds when individuals let their teams down. Emich, a professor of management in UD's Lerner College of Business and Economics, said emotional events occur all the time in the workplace, especially in board rooms, where the atmosphere is often competitive. "Emotion regulation is a key part of harnessing motivation appropriately in a competitive context," Emich said. • Early on, the Cowboys were able to regulate their emotions to tap into the incident when they roared out to several seamless offensive drives. • Emich says the Eagles' young, inexperienced and not-yet-gelled defensive unit was unable to regulate their emotions and preserve their confidence (collective efficacy) after the incident. They were unable to stop Dallas in the first half. • Carter's act could also have served as an emotion regulation cue for both teams. The Eagles defense was unable to regulate and maintain stability, leading to a number of costly penalties. But the Cowboys seemed to have had the same issue when they retaliated with personal fouls of their own. •  In the end, the Eagles were able to come together under the leadership of their coach, Nick Sirianni, and quarterback, Jalen Hurts, to secure a 24-20 victory. To connect with Emich for an interview, visit his profile page and click on the "contact" button.

1 min

Colorado wildfires will have severe mental health impact on residents and firefighters

The historic wildfire season in Colorado includes some of the largest in its history, leading to firefighter burnout and resource shortages. University of Delaware epidemiologist Jennifer Horney says that first responders, as well as Colorado residents, will be at risk for both physical and mental health impacts of the fires. "The fires, and the expected flash floods and mud slides to follow, will also be a test of a reduced focus on, and investment in, federal disaster response and hazard mitigation," said Horney, professor and director of UD's epidemiology program. In addition to research on the impacts of natural disasters on public health, Horney also studies linkages between disaster planning and the actions communities and individuals take to prepare, respond and recover. To set up an interview, visit her ExpertFile profile and click on the "contact" button. Reporters can also email MediaRelations@udel.edu.

View all posts