Class Notes (1,100,000)
US (480,000)
Halawa (10)
Lecture 1

WELL 175 Lecture Notes - Lecture 1: Constipation, Thiamine, Diverticulitis

Course Code
WELL 175

This preview shows half of the first page. to view the full 3 pages of the document.
Chapter 8: Nutrition
I. Nutrition vs. Diet
- Nutrition: the science that studies the act and process of eating and utilizing food
substances and how the body uses it in health and disease
i. Digestion, chemical interaction, acid secretions, metabolism, anabolism, catabolism
1. Metabolism: divided into anabolism and catabolism
- Metabolism: the set of chemical reactions that occur in living organisms in order to
maintain life by converting food into energy and building raw materials
i. These processes allow organisms to grow and reproduce, maintain their
structures, and respond to their environments.
ii. Metabolism is usually divided into two categories:
1. Catabolism: the set of metabolic pathways which break down
molecules into smaller units and release energy
2. Anabolism: the set of metabolic pathways that assemble molecules
from smaller units such as using energy to construct components of
cells such as proteins
- Diet: the habit of eating usual food and drinks, including the kind and amount of food
prescribed for each person
i. Unlike nutrition, diet is highly influenced by geography, cultures, likes,
dislikes, and personal eating habits
II. Essential Nutrients
- Nutrient: a chemical in food crucial to the body’s growth, repair, maintenance,
energy needs, and other vital functions
i. Essential Nutrients: are substances the body must get from food because it
cannot manufacture them at all or fast enough to meet its needs
1. There are about 45-50 nutrients available to us in food
a. The nutrients are divided into 6 groups:
i. Proteins
ii. Carbohydrates
iii. Fats
iv. Vitamins
v. Minerals
vi. Water
III. Nutrient Groups
- Energy Producing Nutrients
i. Three classes of essential nutrients supply energy, as well as other health
1. Protein, carbohydrates, fat
- Non-Energy Producing Nutrients
i. The non-energy producing nutrients category does not contain heat or provide
calories and includes:
1. Vitamins, minerals, water
IV. Energy from Food
- Kilocalorie (Kcal): the unit used to measure energy content in food in the chemistry
i. it is the amount of heat it takes to raise the temperature of 1 liter (1kg) of
water 1-degree C, commonly referred to as the calorie
V. Types and Sources of Good Fats
find more resources at
find more resources at
You're Reading a Preview

Unlock to view full version