UC Davis Health Clinical Studies

A Study of the Effect of Orange Juice or Sugar-Sweetened Beverages on Risk Factors for Type 2 Diabetes and Cardiovascular Disease

In this study, the study team will provide meals and either sugar-sweetened beverages or orange juice.

In this study, we hope to learn more about the effects of drinking sugar-sweetened beverages or orange juice. The beverages will be given with meals that we provide. Therefore, we will know exactly what the meals consists of. The study team will provide meals and either sugar-sweetened beverages or orange juice. We will compare the effects that the beverages have on blood triglyceride and cholesterol levels. We will look at your body’s reaction to insulin (hormone which lowers blood sugar).

Other study
Any, age 18 to 50 years old

A Study of Experimental Treatment With B. Infantis (healthy gut bacteria) in Infants

The purpose of this study is to determine if giving a probiotic for 28 consecutive days increases levels of that probiotic in infants’ stool

The purpose of this study is to determine if giving a probiotic for 28 consecutive days increases levels of that probiotic in infants’ stool. We will study healthy, full-term, exclusively breastfed infants. Probiotics are beneficial bacteria found in supplements or in store-bought yogurts (such as Activia). They are consumed orally. In this study, the bacteria in the probiotic is called Bifidobacterium infantis (B. infantis). It has been found in high amounts in the gut of breastfed infants. Breast milk contains complex sugars that specifically feed B. infantis found infants’ guts. Infants from developed countries such as the U.S. have less B. infantis than babies born in developing countries. This may be due to many factors such as overuse of antibiotics and better hygiene in developed countries. Also, infants taking infant formula have different types of bacteria than infants who only consume breast milk. In a previous study called IMPRINT, we've found that giving a high dose of B. infantis in breastfed newborns for 21 consecutive days starting on day 7 of age was well-tolerated. It resulted in increased levels of B. infantis and reduced levels of bad bacteria in their gut. These data are consistent with other reports giving infants other strains of B. infantis. In the REMEDI Study, we will give different doses of B. infantis to older infants (age 2 to 4 months of age). We hope this results in similar findings to the IMPRINT Study.

Other study
Any, age 2 - 4 months of age

Effects and optimal dose of gelatin and vitamin C on explosive performance of young active men

Can pre-workout supplementation with gelatin and vitamin C improve force transfer and performance in highly trained athletes?

We have recently discovered that a nutritional supplementation with gelatin and vitamin C might help improve force transfer and performance in highly trained athletes. We hope to further study this by measuring explosive performance with this nutritional intervention. To test this idea, study participants will follow a nutritional supplementation and exercise schedule for about 3 weeks. We expect that this project will determine the effects of this a simple and safe nutritional intervention on explosive performance

Other study
Male, age 18-25 years old
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