Tuesday, September 15, 2009

: Freshly Crushed Garlic More Cardioprotective Than Processed Garlic


Freshly Crushed Garlic More Cardioprotective Than Processed Garlic
Keywords: CARDIOVASCULAR HEALTH - Garlic, Fresh, Processed
Reference: “Freshly crushed garlic is a superior cardioprotective agent than processed garlic,” Mukherjee S, Lekli I, et al, J Agric Food Chem, 2009; 57(15): 7137-44. (Address: Cardiovascular Research Center, University of Connecticut School of Medicine, Farmington, Connecticut 06030-1110, USA).
Summary: In an animal study involving rats fed either crushed fresh garlic or processed garlic for a period of 30 days, after which they were sacrificed and their hearts isolated and subjected to 30 mins ischemia followed by 2 hours reperfusion, greater cardiac performance was found in the hearts of rats fed the crushed fresh garlic. The authors conclude, “The results thus show that although both freshly crushed garlic and processed garlic provide cardioprotection, the former has additional cardioprotective properties presumably due to the presence of H2S.”





Low Dietary Intakes of Vitamins A and C Linked to Asthma


Low Dietary Intakes of Vitamins A and C Linked to Asthma
Keywords: ASTHMA, WHEEZE - Vitamin A, Vitamin E, Vitamin C
Reference: “Association between antioxidant vitamins and asthma outcome measures: systematic review and meta-analysis,” Allen S, Britton JR, et al, Thorax, 2009; 64(7): 610-9. (Address: Division of Epidemiology and Public Health, University of Nottingham, Nottingham, UK).
Summary: In a systematic review and meta-analysis of studies examining the impact of dietary intakes of vitamins A, C, and E on occurrence of asthma, the authors conclude that significantly low levels of vitamins A and C are associated with an increased occurrence of asthma, while levels of vitamin E do not appear to have such an effect. Forty studies were included in the analysis. The data from the studies was pooled and results showed that people with asthma had significantly lower intakes of vitamin A as compared to people without asthma, and people with severe asthma had significantly lower levels than those with mild asthma. Lower dietary intake of vitamin C and lower serum vitamin C levels were also associated with an increased odds of asthma. Vitamin E levels were significantly lower in patients with severe asthma, as compared to mild asthma. The authors conclude, “Relatively low dietary intakes of vitamins A and C are associated with statistically significant increa sed odds of asthma and wheeze.”