PHYSCI 5 Lecture Notes - Lecture 9: Omega-3 Fatty Acid, Cortisol, Trans Fat
● Saturated fats (linear, solid) and unsaturated fats (kinks, not exactly solid)
○ Dairy , Eggs , Meat , Oil
○ 1900s
■ Oil: vegetable oil /seeds or grains like soybean oil
■ Oil in general is liquid /lots of unsaturated fats
● Monounsaturated - 1 double bond :) GOOD & healthy
○ Omega-3 GREAT
○ Omega -6 SO COMPLEX
■ Small quantities - beneficial
■ Big quantity- HORRIBLE
■ Linked to lots of diseases we see now
● Polyunsaturated - 2+ double bond
○ :) some good
○ :( some bad
● * not all unsaturated foods are good for us
● Foods with Fats
○ Fish are rich in Omega-3
○ Nuts rich in omega 3
○ Vegetable oil rich in omega 6
■ Major source of diet for lots of ppl
● Inflammation from cardiovascular disease
○ State when immune system is activated
○ How diseases develop
○ Omega 6 in large quantities is inflammatory
■ Constant inflammation → diabetes/cardiovascular disease
○ Most oils
■ Canola oil, corn oil, sunflower oil marketed - rich in omega 6 and are
inflammatory
■ Good oil: olive oil because monounsaturated
● Omega -3 is healthy because it is noninflammatory
● Omega -6 is not healthy because it is inflammatory
● Ideal ratio 5:1 omega-6 to omega-3.
● Managing diet
○ Decrease vegetable oil intake for olive oil
○ Increase fish intake
○ 0 trans fat
○
● Inflammation leads to cholesterol oxidation leads to heart disease
● Unsaturated naturally cis-
○ Cis makes food liquid at room temperature
○ Not linear
○ Food companies don’t use naturally cis-fat because it’ll be liquid not solid/make
food fall apart
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PHYSCI 5 Full Course Notes
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Document Summary
Saturated fats (linear, solid) and unsaturated fats (kinks, not exactly solid) Dairy , eggs , meat , oil. Oil: vegetable oil /seeds or grains like soybean oil. Oil in general is liquid /lots of unsaturated fats. Monounsaturated - 1 double bond :) good & healthy. Linked to lots of diseases we see now. * not all unsaturated foods are good for us. Major source of diet for lots of ppl. Omega 6 in large quantities is inflammatory. Canola oil, corn oil, sunflower oil marketed - rich in omega 6 and are inflammatory. Omega -3 is healthy because it is noninflammatory. Omega -6 is not healthy because it is inflammatory. Decrease vegetable oil intake for olive oil. Inflammation leads to cholesterol oxidation leads to heart disease. Cis makes food liquid at room temperature. Food companies don"t use naturally cis-fat because it"ll be liquid not solid/make food fall apart. Don"t really use anymore (substitute with veggie oil.
