View clinical trials related to Nutrition.
Filter by:Caffeine containing energy drinks (CCED) are beverages that typically contain mixtures of simple sugars, caffeine and may contain vitamin, mineral and/or herbal preparations. In Canada, the consumption of CCEDs among adolescents is a regular occurrence and a common part of the everyday diet. Contributing to the obesity epidemic in youth is the consumption of energy drinks; yet no data on the metabolic responses to CCEDs exists. This study will examine the metabolic implications of CCED consumption in adolescents, aged 13-19 years. The investigators hypothesize that CCEDs will impair glucose tolerance by ~30% in lean adolescents and the primary cause of the insulin resistance will be caffeine. Obese individuals will experience a similar level of glucose impairment, but a greater rise in blood glucose compared to their lean counterparts (i.e. higher starting glucose level). For many, this additional, caffeine-induced rise will expose them to hyperglycemia, putting some individuals in the glucose intolerant or transient diabetic range. It is hypothesized that continued metabolic insult resulting from CCEDs may predispose susceptible individuals to chronic metabolic diseases later in life. The investigators will also examine the genetic basis of caffeine-induced glucose intolerance. This gene-diet interaction could explain why caffeine may be much more metabolically harmful for some individuals compared to others. The study of 'metabolomics' will also be utilized to analyze caffeine and caffeine metabolites such as theobromine, theophylline, and xanthine. This will be accomplished using Nuclear Magnetic Resonance (NMR) spectroscopy. Results from this study will have the potential to alter current perceptions that CCED are 'harmless' and will have far reaching implications for both medical professionals and legislators alike.
Weight loss resulting from poor food intake is common in head and neck cancer patients. Currently, feeding tubes are placed before starting treatment to provide nutrition and prevent weight loss. However, studies have not always shown that feeding tubes prevent weight loss. Also, limiting food intake by mouth may lead to swallowing problems. The aim of this study is to compare the effect of diet and swallowing therapy with feeding tube placement. In this study, your weight, food intake, swallowing ability, and side-effects of treatment will be monitored before, during, and 3 and 6 months after treatment to see if there is any difference between the therapy groups. The investigators hope that with the addition of diet and swallowing therapy during treatment that we can improve food intake and swallowing ability while still maintaining weight.
The purpose of this study is to determine the correlation, if any, between the nutritional content of breast milk pumped by the mothers of very low birth weight (VLBW) infants in the neonatal intensive care unit (NICU) and the nutritional value they are actually receiving in a 24 hour period, since as a practical matter, these may not be the same.