Exam 1 Review

Water-Soluble Vitamins

Vitamins that dissolve in water and include B-complex vitamins and vitamin C.

B-complex Vitamins

A group of vitamins that play a role in various bodily functions such as metabolism, development, and red blood cell production.

Sources of B-complex Vitamins

Primarily found in protein-rich foods like meat, poultry, eggs, fish, dairy, as well as green leafy vegetables and fortified cereals.

Deficiency

A state resulting from inadequate intake of vitamins, leading to various health issues.

Toxicity Risk for B-complex Vitamins

Generally low due to their water-solubility, which allows for quick excretion from the body.

Alcohol Use Disorder

A risk factor that can lead to deficiency of B-complex vitamins.

Malnourishment

A condition of not having enough nutrients, which can predispose one to B-complex vitamin deficiency.

Malabsorption Syndromes

Medical conditions that impair the body's ability to absorb nutrients, increasing deficiency risk.

B1 Deficiency

Can cause Beriberi and Wernicke-Korsakoff syndrome.

B2 Deficiency

Can cause cheilosis, characterized by dry, cracked lips.

Cheilosis

A condition showing dry, swollen lips with fissures, associated with lack of vitamin B2.

B3 Deficiency

Can cause pellagra, characterized by diarrhea, dermatitis, and dementia.

Pellagra

A disorder caused by vitamin B3 deficiency, marked by the three Ds: diarrhea, dermatitis, and dementia.

B6 Deficiency

May lead to anemia and peripheral neuropathy.

B9

Also known as folic acid; essential for fetal development and preventing neural-tube defects.

Folic Acid

A form of vitamin B9, crucial for pregnant women to prevent fetal problems.

B12 Deficiency

Can lead to pernicious anemia due to inadequate absorption.

Pernicious Anemia

A type of anemia caused by a lack of intrinsic factor, affecting B12 absorption.

Intrinsic Factor

A protein necessary for the absorption of vitamin B12 in the intestines.

Vitamin C

A water-soluble vitamin that functions as an antioxidant and is vital for collagen growth and immune function.

Antioxidant

Substances that help neutralize harmful free radicals in the body.

Sources of Vitamin C

Found in citrus fruits, tomatoes, potatoes, kiwi, broccoli, and strawberries.

Vitamin C Deficiency

Can cause scurvy, characterized by swollen gums and poor wound healing.

Scurvy

A disease resulting from vitamin C deficiency, marked by bleeding gums and tooth loss.

Risk Factors for Scurvy

Include smoking, poor nutrition, and alcohol use disorder.

Signs of Scurvy

Swollen, bleeding gums, tooth loss, and delayed wound healing.

Quiz: Beriberi is caused by a lack of what vitamin?

B1.

Quiz: Pernicious anemia is caused by a lack of what vitamin?

B12.

Quiz: Deficiency in vitamin C can cause what condition?

Scurvy.

Cool Chicken Hint for B2

Two lips, 'B' swollen if lacking in B2.

Cool Chicken Hint for B9

Folic acid prevents fetal problems.

Functions of Vitamin C

Essential for collagen formation, bone health, iron absorption, and immune function.

Food Rich in B-complex Vitamins

Meat, poultry, eggs, fish, dairy, green leafy vegetables, beans, peas, and fortified cereals.

Risks Associated with Alcohol Use Disorder

Often leads to deficiencies in B-complex vitamins.

Intrinsic Factor Importance

Without it, vitamin B12 cannot be absorbed, leading to pernicious anemia.

Symptoms of Beriberi

Weight loss, confusion, and memory loss due to vitamin B1 deficiency.

Conditions Associated with B6 Deficiency

Anemia and peripheral neuropathy due to inadequate vitamin B6.

Pellagra Symptoms

Characterized by the three D's: diarrhea, dermatitis, and dementia.

Vitamin C Food Sources

Citrus fruits, strawberries, broccoli, and red/green peppers.

B-complex Vitamins General Functions

Support metabolism, growth, and development, and help maintain healthy skin.

Fortified Foods

Foods enhanced with vitamins and minerals, often including B-complex vitamins.

Signs of Vitamin C Deficiency

Swollen gums, fatigue, and skin problems.

B-complex Vitamin Functions

Aid biochemical reactions and contribute to heart and nerve function.

Vitamin C and Collagen

Vitamin C is essential for the production of collagen.

Iron Absorption and Vitamin C

Vitamin C enhances the absorption of iron in the body.

Unique Function of Vitamin C

Acts as a potent antioxidant to protect cells from oxidative stress.

Impact of Malabsorption Syndromes

Can severely affect nutrient uptake, leading to multiple vitamin deficiencies.

Relationship between Smoking and Vitamin C

Smoking can increase the risk of vitamin C deficiency.

Collagen and Vitamin C Importance

Vital for skin, cartilage, tendons, ligaments, and blood vessels.

Nutritional Recommendations for Pregnant Women

Often advised to take prenatal vitamins containing folic acid.

Common Deficiency in Bariatric Surgery Patients

Often leads to deficiencies in B-complex vitamins due to altered digestion.

B1 Role in the Body

Crucial for carbohydrate metabolism and nerve function.

Vitamin C and Immune Function

Supports the body's immune system and increases the natural defense.

Symptoms of Vitamin C Deficiency

Swollen and bleeding gums, fatigue, and frequent infections.

Sources of Folate

Green leafy vegetables, legumes, nuts, and fortified grains.

Vitamin C: The Curvy Vitamin

Helps remember its association with scurvy (curvy).

Carbohydrates

The primary source of energy for the body, controlling blood glucose levels and insulin metabolism.

Simple carbohydrates

Easy to digest carbohydrates that provide quick energy and rapidly raise blood glucose levels.

Complex carbohydrates

Carbohydrates that contain more fiber, take longer to digest, and cause a slower increase in blood glucose levels.

Glycogen

Stored carbohydrate energy found in the liver and muscles, released during glycogenolysis when needed.

Fiber

A crucial component of diet that aids in digestion, stabilizes blood glucose, and reduces risks for various diseases.

Recommended daily fiber intake for men

38 grams.

Recommended daily fiber intake for women

25 grams.

Lipids

The main source of stored energy in the body, crucial for cell structure and function.

Phospholipid bilayer

The structure that forms cell membranes, primarily composed of lipids.

Saturated fats

Fats primarily found in animal products that can increase LDL levels and heart disease risk.

Trans fats

Artificially created fats found in processed foods that raise LDL and lower HDL levels.

Unsaturated fats

Heart-healthy fats found in avocados, nuts, seeds, and oils.

LDL

Low-Density Lipoprotein, known as 'bad cholesterol,' linked to higher risk of heart disease.

HDL

High-Density Lipoprotein, known as 'good cholesterol,' helps reduce heart disease risk.

Recommended intake of cholesterol per day

Below 300 milligrams, or below 200 milligrams for high-risk individuals.

Protein

Essential for tissue building and repair, immune function, and energy.

Sources of protein

Seafood, meat, poultry, eggs, soy, nuts, seeds, and dairy products.

Amino acids

Building blocks of proteins; consist of essential (9) and non-essential (11) amino acids.

Complete proteins

Proteins containing all 9 essential amino acids, usually from animal sources or soy.

Incomplete proteins

Proteins that lack one or more essential amino acids; often need to be combined with complementary proteins.

Complementary proteins

Two or more incomplete proteins that, when eaten together, provide all essential amino acids.

Examples of complementary proteins

Rice and beans.

Anabolism

The process of assembling amino acids to create proteins, involving protein synthesis.

Catabolism

The process of breaking down proteins for energy.

Nitrogen balance

The relationship between anabolism and catabolism; important for understanding protein metabolism.

Neutral nitrogen balance

Occurs when protein synthesis equals protein breakdown in healthy adults.

Positive nitrogen balance

Occurs when protein synthesis exceeds breakdown; seen during growth and pregnancy.

Negative nitrogen balance

Occurs when protein breakdown exceeds synthesis; seen in starvation and severe injuries.

Quiz on macronutrients

A check to test understanding of carbohydrates, lipids, and proteins after the lecture.

Importance of fiber

Supports healthy bacterial growth, aids digestion, and lowers risks for certain diseases.

Glycogenolysis

The process of breaking down glycogen to release glucose into the bloodstream.

Quick energy sources

Provided by simple carbohydrates, which digest easily.

Slow energy sources

Offered by complex carbohydrates due to their high fiber content.

Cholesterol roles in the body

Important for cell membranes, vitamin D, hormones, and digestion.

Risks of high saturated fat intake

Increased risk of heart disease and elevated LDL cholesterol levels.

Healthier fat options

Emphasis on incorporating more unsaturated fats in diet.

Two types of proteins

Complete proteins (all essential amino acids) and incomplete proteins (lacking some essential amino acids).

Protein metabolism significance

Crucial in understanding body repair, immune function, and energy source.

Key role of protein in nursing care

Essential for wound healing and recovery of patients.

Essential amino acids definition

Amino acids that cannot be synthesized by the body and must be obtained through diet.

Examples of saturated fats

Commonly found in animal products like butter and fatty meats.

Common sources of unsaturated fats

Avocados, nuts, seeds, and olive oil.

Health benefits of HDL

Helps transport cholesterol away from arteries, reducing heart disease risk.

Indicators of good nutritional status

Adequate protein and caloric intake reflect overall health.