Judith E. Brown Prof. Albia Dugger Miami-Dade College The Inside Story about Nutrition and Health Unit 2

Nutrition and Overall Health The health and fitness of the human body depend on a variety of interrelated factors: Genetic traits Environmental factors Lifestyle factors Health care Diet

Nutritional State of the Nation Nutritional deficiency diseases such as rickets and pellagra were once common- why are they no longer common- in certain parts of the world?

Leading Causes of Death in US

Diseases/Disorders Linked to Diet

What is Oxidative Stress? 1.Oxidation: Loss of Electrons from a molecule 2.Free Radicals- take electrons from surrounding molecules, such as DNA, cell membranes, Fats, etc. Aging? 3.Antioxidants- prevent loss of electrons- safe guard molecules from damage by free radicals- Foods that contain antioxidants?

Response to By Our Body 1.Immune system responds to toxins and irritants by producing and releasing Free Radicals example: Oxygen atoms 2.Free Radicals attack the toxin or pathogen- cause damage by oxidation. 3.These Free Radicals also damage healthy tissues, such as blood vessels 

Foods, Inflammation, and Oxidative Stress

Nutrient-Gene Interactions Sulforaphane (in cabbages) inactivates a gene that encourages cancer development DNA and nutritionDNA and nutrition video Tale of Two Mice Tale of Two Mice video

The Importance of Food Choices Americans tend to choose energy-dense, nutrient-poor foods, including processed foods that pose great risks to health High in saturated fat, salt, sugar Low in fiber, vegetables, fruits

Food Then… and Now

Japanese Men: Diet and Diabetes

What Should We Eat? MyPyramid Food Guide Lean meat, fish, and dried beans prepared without added fat Vegetables without butter or margarine Fruits with no added sugar Milk products with no fat Dark-green and orange-colored vegetables Whole grains

MyPyramid.gov

Tracking the American Diet

Homework Questions- Posted on Class website 1.Explain how nutrition affects immunity, quality of life, susceptibility to diseases, degenerative diseases, and longevity. 2. Describe 2 national studies used to periodically evaluate diets and health of Americans.