Flashcards in Lecture 17 - Adults and Aging Deck (42)
What are some nutrients that affect immunity?
Fe, Selenium, Zn
Vit A, B6, C, E, Folate
What does the immune system respond to the most?
Most sensitivity to changes in nutritional status
What compromises nutritional health in terms of our immune system?
Our nutrient needs increase while our food intake often decreases trying to fight an infection
-leads to a downward spiral that must be broken for recovery to occur
How might you look out for aml nutrition in the older population?
Look for how long their sickness period is and how severe it gets
What is inflammation?
Response to infection or injury
What is acute inflammation ?
-Increased blood flow and increased white blood cell count to the site
-Phagocytes engulf microbes
-Oxidative products are released to kill microbes
-Fights infections to promote recovery
-helpful for us
What is chronic inflammation?
Everything about acute and
- Sustained inflammation can perpetuate chronic disease
-all that constantly being active and released over a long period of time
-end up damaging the tissues due to free radicals being released constantly
-very harmful and damaging
What happens during chronic inflammation?
-Damages cells lining the blood vessels
-Immune system sends macrophages
-LDL cholesterol becomes trapped and engulfed by macrophage
-Macrophages swell and eventually become cells of plaque
-plaque encourages blood clotting
What is a chronic disease that is due to malnutrition?
How is COPD linked to malnutrition?
It is a lung capacity problem
-people are usually overweight
What is metabolic syndrome?
Is usually a combination of 3 or more of:
-Abdominal obesity (waist male: 102 cm and females 89cm)
-Triglycerides: greater than 1.7mmol/L
-HDL: less than 1.03 males and females 1.3
-BP: greater than 130/85
-Fasting glucose: greater than 6.1mmol/L
What is the relation between a diet high in saturated fatty acids, in Na and chronic disease?
Saturated fattyacids: There is a claim that medium and shorter chain fatty acids aren't as bad for you ebcasye they re more readily absorbed
Na: higher Na leads to an increase in BP which can lead to hypertention
Genetics mostly determine this
What are the main diets to help with metabolic syndrome ?
Mediterranean: because of olive oil
DASH: reduce Na by consuming whole grains and proteins
Portfolio diet: taking pieces from all kinds of diets and putting them together
How is type 2 diabetes maintained ?
-Consistant monitoring of glucose
-eat at least 1/2 whole grains
-Sugar need not be avoided
-Limit saturated fat intake to <7%
-Protein intake as currently consumed
-alcohol in moderation
How does diet affect cancer indicators?
consuming these are linked to 1/3 of all cases
-high intake of alcohol
-Grilling over direct flame
-Diets high in processed meat consumption
In terms of cancer indicators, what about carcinogens are we more concerned about?
For most it is the process of the food prep that causes the carcinogens
-charing of grilled meat
-Frying byproduct is from the starches
What are some cancer promoters?
Animal fats and some vegetable fats
What are some cancer anti-promoters?
Fruits and veggies (antioxidants, polyphenols)
Why is inflammation a good thing?
Plays a crucial role in protecting our bodies from forge in invaders
-chronic inflammation can lead to chronic disease development
Why is the aging population of concern?
In 2036 there will be 10.4 million Canadians above the age of 65.
-we will be required to do more for them with the same budget
What is the main thing to help agin adults?
Nutritious diet, regular physical activity throughout life can help prevent or delay the onset of chronic disease and help keep adults happy and productive in their later years
Because there is such diversity in older adults, what can disease be attributed too?
Can you avoid aging?
Not really, it is programmed in our genes but slowed by our lifestyle
What are the main observations in older adults healthy habits?
-Eating well balanced meals
-Engaging in physical activity
-Maintaining healthy body weight
-Absence or moderate use of alcohol
Why is physical activity good for older adults?
-increase flexibility, balance, posture, and mobility
-most powerful indicator of mobility in later years
Why do we see declines in muscle mass and strength as we age?
increased vulnerability to falls
Potential loss of independence
What happens when you restrict 30% of usual calories as you get older?
Longer life expectancy by 3 years
-likelyhood of a better quality of life due to less free radicals
On the other hand eating the same amount of cals but higher in antioxidant proves to do the same thing
Why is reducing oxidative stress a good thing?
Increases antioxidant activity and DNA repair
-can be similar to those following antioxidant and phytochemical rich diet
As you age, is it better to be over or under weight?
Over BMI greater than 27
Low can be more of an issue
-may be a signal of malnutrition
-unprepared to fight against disease