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13 Cards in this Set

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True or False: Adverse nutrient-nutrient interactions pose a significant danger, even during consumption of healthful diets.
False. The consumption of healthful diets consistent with dietary guidelines poses little danger of adverse nutrient-nutrient diets.
In what type of diets are adverse nutrient-nutrient interactions most likely to occur?
In unusual diets that contain excessive amounts of single nutrients.
What type of an effect arises between two or more agents, entities, factors or substances that produces an effect greater than the sum of their individual effects?
A synergistic effect.
Synergistic effect: What do vitamin C, citric acid, tricarboxylic acid, amino acids & sugars promote?
The absorption of non-heme iron.
What type of nutrients act synergistically to reduce the toxicity of ROS (reactive oxygen species)?
Antioxidant nutrients, such as vitamins C & E, selenium & beta carotene.
Syngergistic effect: What two vitamins can interact with dietary nitrites to prevent their conversion to mutagenic nitrosamines?
Vitamins C & E
What type of effect is produced by the contrasting actions of two (or more) chemical groups?
An antagonistic effect. Example: the effect between the opposing actions of insulin and glucagon to blood sugar level. While insulin lowers blood sugar, glucagon raises it. Thus, regulating the major physiological function of these two chemicals is crucial in order to keep up a healthy level of glucose in blood.
Antagonistic effect: what might impair the absorption of several mineral elements?
Dietary fiber
Antagonistic effect: What do carbonates, oxalates, phosphates, fiber components & tannins impair the absorption of?
Non-heme iron
Antagonistic effect: What will a very high intake of either copper, iron or zinc interfere with the absorption & utilization of?
The other two. Example: A very high intake of copper will interfere with the absorption & utilization of iron and zinc.
Antagonistic effect: An increase in requirements for what vitamin is associated with increases in polyunsaturated fatty acid?
Vitamin E
Antagonistic effect: Excess of what amino acid may antagonize the functions of vitamin B6 & impair the conversion of tryptophan to nicotinic acid?
Leucine
Antagonistic effect: Toxic levels of what metal interfere with the absorption of iron?
Cadmium