aim: what nutrients make up a healthy diet? do now: “the chemical factory” worksheet hw:...

Aim: What nutrients make up a healthy diet?Do Now: “The chemical factory” worksheet

HW: Nutrition/Chemistry index cards Due Wed 11/12.

QUIZ Wed 11/12 on These notes &Video- ‘Forks over Knives’

How do we know how much energy is in a nutrient?

By the number of calories

How do we know how much energy is in a nutrient?

By the number of calories

Calories: measures the energy stored in food

How many calories should you eat a day?

Active Teenagers:Males – 2,500 Calories

Females- 2,200 Calories

Calories

Calorie

• In general, the more calories a food product contains, the more energy it can release.

Types of NutrientsTypes of Nutrients

• Nutrients: Substances in food that are needed for energy, growth and repair.

• Examples:

–Carbohydrates–Fats–Proteins–Vitamins and Minerals–Water

ALL MUST BE PRESENT IN YOUR DIET !

Carbohydrates

• Main source of energy

• Ex. Bread, pasta, potatoes, rice

Fiber: found in fruits, vegetables and grains Fiber helps intestinal muscles to keep food and wastes moving along.

Fats (Lipids)

• Energy Source

• Provides the most energy• Needed for cell membranes, nervous

system, insulation (fat)

• Types: Saturated & Unsaturated.• Saturated fats increase your chance of

getting heart disease

Proteins

• Used to make hormones and enzymes. Proteins can also be used to build and repair body parts.

• Ex. Meat, eggs, beans, nuts.

Vitamins

• Nutrients the body needs in SMALL amounts.

• Molecules that aide in chemical reactions

• Ex: Vitamin A and Vitamin D

Vitamin D

Minerals

• Substances required for the body to function normally.

Ex: Iron and calcium

hemoglobin

Water• The most important of all!!!

• All of the body processes and chemical reactions take place in water.

• Has no nutritional value and you gives no energy

Over Over half half of your body weight is water. of your body weight is water. Women 50%Women 50%Men 60%Men 60%

http://ed.ted.com/lessons/sugar-hiding-in-plain-sight-robert-lustig

Sugar: Hiding in Plain Sight

The science of spiciness