nutrition Flashcards
modifiable risk factors in cardiovascular disease
High blood glucose Hypertension
High dietary salt intake Low fruit/vegetable intake
Trans fat intake
Oxidized LDL
Excess weight/obesity
Low dietary EPA/DHA intake
Alcohol use
Smoking
sodium importance
water balance/distribution, maintaining acid-base balance, cellular transport mechanisms, muscle and nerve function
____ is not sodium
salt
1 gram of salt (sodium chloride) = xx mg of sodium
1 gram of salt (sodium chloride) = 387 mg of sodium
(approximately 40% sodium by weight)
need for sodium is related to
loss (sweating)
tolerable upper limit for sodium
2.5g
adequate intake for sodium
1500 mg for younger adults, and this decreases with advanced age (1300 for those aged 51 – 70, 1200 for those 70 and older)
potassium is ____ a plentiful as sodium
twice
where is potassium found in the body
Most is found intracellularly, however, the small amount that exists in the extracellular fluid is very important for muscle function and is tightly regulated by the body
importance of potassium
water balance, acid-base balance, and muscle/neuron activity, it is also important in carbohydrate metabolism (stored in glycogen) and protein synthesis
food sources of potassium
Avocado, potato, squash, mushrooms, banana, tomato Legumes, particularly white beans
Seafood (highest in salmon)
Leafy greens, particularly beet greens
Dairy
vitamin C and CVD
Plays a role in cholesterol metabolism
vitamin K and CVD
plays a role in vascular health and calcium homeostasis
vitamin E and CVD
Reduces lipid peroxidation and platelet aggregation
therapeutic considerations for CVD
Reduce calorie intake and maintain appropriate portion control
Increase intakes of monounsaturated and omega-3 fatty acids
Increase dietary fibre from fruits, whole grains, and vegetables
Increase micronutrients from food (vitamins A, E, B6, B12 and folate)
Consume plant proteins over animal proteins
Reduce use of highly processed foods and opt for whole foods as much as possible
Adopt a Mediterranean diet
Add physical activity
Stop smoking
___% of total cholesterol in the bloodstream comes from diet (remainder is synthesized in the body)
20%
Reducing intake only accounts for a small amount
Enhancing elimination may be a more efficient option
Isocaloric replacement of saturated fatty acids with monounsaturated and polyunsaturated fatty acids helps to reduce
LDL
saturated fat sources
Fats solid at room temperature (butter, lard, coconut oil, palm oil), fatty meats, cured meat, full-fat dairy
finer can help reduce
LDL choelsterol
total fiber intake vs soluble fibre intake goals
Total fibre intake of at least 17 g per day with a goal of 30 g per day
Soluble fibre intake of at least 7 g per day with a goal of 13 g per day
nutrition supplementation and CVD?
In many instances, the evidence base for nutrient supplementation does not show reductions in risk for cardiovascular disease
True for most antioxidants including beta-carotene, omega-3 fatty acids, vitamins C, E
sodium and potassium intake in hypertesntion
reduce sodium intake and increase potassium intake through diet
increased blood pressure/ hypertension, 20-50% of people are
salt sensitive
salt sensitivity is associated with with genes
genetic variations in ACE, angiotensinogen, and nitric oxide synthase
DASH diet
Dietary Approaches to Stop Hypertension
DASH diet limits sodium too? what is the lower sodium version too?
2300mg / day
A lower sodium version exists limiting to 1500 mg per day
macro breakdown in DASH diet
27% fat (no more than 6% saturated fat), 18% protein, 55% carbohydrates
DASH diet; potassium ,calcium, magnesium, fiber, cholesterol intake
Based on a 2100 calorie day: potassium intake of 4700 mg per day, calcium 1250 mg, magnesium 500 mg, fibre 30 g, cholesterol intake limit of 150 mg per day
daily servings of foods in a dash diet (based on 2100 cal diet)
Fats and oils: 2 - 3
Sweets/added sugars: 5 or less per week
Nuts, seeds, legumes: 4 – 5 per week
Grains: 6 – 8
Vegetables: 4 – 5
Fruits: 4 – 5
Fat-free or low-fat dairy: 2 – 3
Lean meat, poultry, fish: 6 or less
STUDY on DASH diet slide 22
what did they evaluate
Evaluated the relationship between the long-term consumption of 10 food groups and cardiovascular mortality
Whole grains, vegetables, fruits, nuts, legumes, eggs, poultry, dairy products, fish/seafood, red/processed meat
There were no studies to be included for fish/seafood and poultry
study found that each 10 gram increase in whole grain intake per day was associated with
4% reduction in the risk of cardiovascular mortality
study: lowest vs highest intake of whole grain people what CVD mortality risk
Compared with the lowest intake of whole grain intake, people with the highest whole grain intake had a 13% lower risk of cardiovascular mortality
each 10 gram increase in red/procesed meat is associated with
with a 1.8% increased risk of cardiovascular mortality, with individuals consuming the highest intakes having a 23% increased risk of cardiovascular mortality compared with those consuming the lowest amount
dairy products and CVD?
Neither our meta- nor dose-response analysis showed effects of dairy intake on the risk of cardiovascular mortality
nuts and CVD risk
a 27% lower risk of cardiovascular mortality in individuals with the highest nut intake compared with the lowest intake
legumes and CVD mortality?
No associations of legume intake with the risk of cardiovascular mortality from the meta-analysis data
dose response analysis found that a 10gram increase in legumes per week is associated with
with a negligible 0.5% reduction in the risk of cardiovascular mortality
higher fruit and vegetable intake is associated with lower cardiovascular mortality by
by 28%, where a larger (36%) risk reduction was found with only higher fruit intake
when do the benefits of fruits and vegetables plateau
at 5 servings per day
what can headaches be a symptoms of what deficiency
iron deficiency anemia
inverse relationship between what mineral and headaches
inverse relationship between serum ferritin levels and experiencing severe headaches or migraines in people who menstruate
in post menopausal Womens high levels of what are protective
ferritin
iron and headaches for males?
No relationship exists between iron and the experience of headaches and migraines in those assigned male at birth.
forms of iron
- hemoglobin and myoglobin
- storage iron (ferritin)
- transport iron (transferrin)
hemoglobin and myoglobin
- Most of the body iron found here
storage iron; stored as what? where? excess iron is held as?
Iron stored as ferritin in the liver, spleen, and bone marrow
- Excess iron is held as hemosiderin
transport iron found where? what transport protein?
Found in blood plasma bound to the transport protein transferrin
what is iron absrotpiton influenced by
by iron form (heme vs non-heme) and chemical state (Fe3+ - ferric vs Fe 2+ - ferrous)
larger portion of dietary iron is
non heme
non heme
Includes all plant sources of iron and 60% of animal sources