Ch.1 Flashcards
(25 cards)
Hunger
the primarily physiological drive to find and eat food, mostly regulated by internal cues to eating
Appetite
the primarily psychological influences that encourage us to find and eat food, often in the absence of obvious hunger
Satiety
state in which there is no longer a desire to eat; a feeling of satisfaction
Nutrition
science that links foods to health and disease
Cardiovascular (heart) disease
general term that refers to any disease of the heart and circulatory system; generally characterized by deposition of fatty material in the blood vessels (hardening of the arteries), which can lead to organ damage and death
Cholesterol
waxy lipid found in all body cells; it has a structure containing multiple chemical rings; is found only in foods of animal origin
Chronic
when referring to disease, this term indicates that the disease process, once developed, is slow and lasting
Diabetes
a group of diseases characterized by high blood glucose
Type 1 – insufficient or no release of insulin; requires daily insulin therapy
Type 2 – insufficient release of insulin or general inability of insulin to act on certain body cells; may or may not require insulin therapy
Hypertension
condition in which blood pressure remains persistently elevated; obesity, inactivity, alcohol intake, excess salt intake, and genetics may each contribute
Osteoporosis
decreased bone mass related to the effects of aging, genetic background, and poor diet
Risk factor
term used when discussing the factors contributing to the development of a disease (e.g., heredity, lifestyle choices such as smoking, or nutritional habits)
Six Classes of Nutrients
Carbohydrates Lipids Proteins Vitamins Minerals Water
Macronutrients
needed in large quantities (i.e., 1 gram or more)
Carbohydrates
Lipids
Proteins
Water
Micronutrients
needed in milligram or microgram quantities
Vitamins
Minerals
Phytochemicals
chemicals found in plants; may contribute to reduced risk of cancer or cardiovascular disease in people who consume them regularly
Calories
Carb: 4/g
Protein: 4/g
Fat: 9/g
Alcohol: 7/g
5 g of sugar or salt
1 teaspoon (tsp)
1 kilogram (kg)
1000 g = 2.2 lb
1 g
1000 milligrams (mg) =1,000,000 micrograms (mcg)
1 liter (L)
1000 milliliters (ml)
1 cup
240 ml
1 quart
4 cups ~ 1 L (= 0.946 L, to be exact)
The Scientific Method
Step 1: observations made and questions asked
Step 2: hypothesis generated
Step 3: research experiments conducted to test hypothesis
Step 4: results evaluated by other scientists and reported in a publication
Step 5: follow-up experiments conducted to confirm or extend findings
Step 6: hypothesis accepted or rejected
5 simple tips to avert weight gain
Eat breakfast
Plan ahead to have balanced meals and snacks
Limit liquid calories
Stock the fridge with low-calorie, nutrient-dense foods
Exercise regularly