Featured Post from University of Delaware

The Importance of Vitamin K for a Healthy Diet

Jul 27, 2023

2 min

Vitamin K is a fat-soluble vitamin that plays important roles in blood clotting and in bone metabolism. Sharon Collison, a registered dietitian and instructor of Clinical Nutrition at the University of Delaware, has over 30 years of experience looking at nutrition, diets and diet culture. She has studied the affects of vitamin K and the impact it can have on one's overall health.

She notes that vitamin K decreases bone turnover, protecting against fractures. Vitamin K is unique in that bacteria in the GI tract can synthesize vitamin K that can contribute to the body’s needs. People generally get about ½ their vitamin K from synthesis in the GI tract and ½ from food sources.

Here are some foods that Collison said are not only good sources of vitamin K, but are nutritional powerhouse foods that are nutrient dense.

Broccoli Raab: 241 mcg/100 grams of vitamin K. Also high in dietary fiber, potassium and vitamin C.

Artichokes: 14.8 mcg/100 grams vitamin K. Also an excellent source of dietary fiber and potassium.

Broccoli: 102 mcg/100 grams vitamin K. Also high in vitamin C, beta carotene, dietary fiber, potassium, iron and phytonutrients — which has great cancer fighting properties.

Spinach: Chopped frozen boiled spinach has 543 mcg/100 grams of vitamin K, making it one of the best sources. Also high in vitamin C, folate, potassium, vitamin A and magnesium.

Green leaf lettuce: 126 mcg/100 grams vitamin K. Also a good source of vitamin A and potassium, folate and very low in calories.

Canola oil: 10 mcg/1 Tbsp vitamin K. Also a good source of heart-healthy monounsaturated fats and vitamin E.

Canned tuna in oil: 37 mcg/3 ounces vitamin K. Also rich in protein and heart healthy omega-3 fatty acids.

Eggs: Vitamin K content varies between 67-192 mcg per egg yolk depending on the hen’s diet. Also an excellent source of protein.

Arugula: 21 mcg/1 cup vitamin K. Also good source of potassium, vitamin C, folate, vitamin A and calcium.

Collison is affiliated with the National Alliance on Eating Disorder Awareness and Prevention. She has been a board-certified sports dietitian since 2008, providing sports nutrition guidance to middle-school, high-school, collegiate, elite and amateur athletes.

Connect with:

Sharon Collison

Clinical Instructor, Health Behavior and Nutrition Science

Sharon Collison provides medical nutrition therapy (MNT) in University of Delaware's Nutrition Clinic.

Weight/Health at Every SizeWeight ManagementSports NutritionHealthy AgingEating Disorders

Find Experts

Aug 26, 2026

1 min

How Trade Wars Are Reshaping Fashion and Apparel

Trade disputes and tariffs have become an increasingly common part of the global economic landscape, with the fashion and apparel industry often caught in the crossfire. University of Delaware professor Sheng Lu can explain how these disruptions reshape sourcing decisions, supply chains, prices and the products ultimately available to consumers. Lu can discuss: • How new tariffs, including those on Canadian jackets and wool products, could affect consumers, fashion companies and apparel supply chains. • How tariffs can affect apparel prices and product availability for U.S. consumers. • Why fashion and apparel supply chains are particularly vulnerable to trade policy changes. • The impact of trade disputes on fashion companies and retailers in the U.S. and abroad. • What previous trade disputes can tell us about the potential consequences of tariffs. To arrange an interview, visit Lu's profile and click on the “contact” button. Interested reporters can also email MediaRelations@udel.edu.

Aug 25, 2026

1 min

Epidemiologist Available to Discuss Measles, Vaccination and Infectious Disease Outbreaks

As measles cases continue to rise in the United States, University of Delaware epidemiologist Jennifer Horney is available to discuss measles outbreaks, vaccination, vaccine hesitancy and the challenges of preventing the spread of highly contagious infectious diseases. The deaths of two unvaccinated Pennsylvania residents from measles — the first measles deaths in the state in 35 years — underscore the continuing public health risks posed by the disease. Horney, a former member of the Centers for Disease Control and Prevention’s Board of Scientific Counselors, is an experienced epidemiologist who studies infectious disease outbreaks and public health preparedness. Horney can discuss: • Measles outbreaks and transmission: Why measles is among the most contagious infectious diseases and how outbreaks spread. • Vaccination: The effectiveness of the MMR vaccine and the importance of maintaining high vaccination rates. • Vaccine hesitancy and misinformation: What influences vaccination decisions and how public health messaging affects perceptions of vaccine and infectious disease risks. • Measles prevention and treatment: Why outbreaks can reemerge when vaccination coverage falls, and the role and limitations of vitamin A and other treatments. • Outbreak response and preparedness: How public health officials investigate and respond to measles and other infectious disease outbreaks, and what can be learned from previous outbreaks. To reach Horney directly and arrange an interview, visit her profile and click on the “contact” button. Interested reporters can also email MediaRelations@udel.edu.

Aug 10, 2026

1 min

Experts on earthquake response, community recovery and building safety

The shaking from a major earthquake may be over in minutes, but its consequences will last for years. University of Delaware experts can address emergency response, distributing aid, assessing damaged buildings, helping vulnerable communities and planning for long-term recovery. Their expertise is particularly relevant as communities across Latin America respond to major earthquakes, including the deadly magnitude 7.4 earthquake in Colombia. Tricia Wachtendorf, co-director of UD’s Disaster Research Center, offers expertise on how governments, nonprofits, emergency responders and community groups coordinate following a major disaster. Her research examines the role of spontaneous or “emergent” groups, humanitarian aid and donations, and how communities and organizations respond in the aftermath of disasters. Jennifer Trivedi, associate professor of anthropology and Disaster Research Center faculty member, specializes in disaster vulnerability and why some communities are more severely affected than others. She also addresses the long-term recovery needs and planning that emerge after the immediate crisis. Michael Chajes, professor of civil and environmental engineering, provides expertise on the structural damage caused by earthquakes, why some buildings collapse while others withstand the shaking and how engineers assess damaged structures and improve earthquake resilience. To arrange an interview with one of these experts, visit their profiles and click on the contact button. Interested reporters can also email MediaRelations@udel.edu.