Keto Diet Fundamentals and Core Concepts 3

Question 1

Which of the three main ketone bodies is the most abundant in the blood during nutritional ketosis?

Accepted Answer

Beta-hydroxybutyrate (BHB)

Answer

Beta-hydroxybutyrate (BHB) is the most abundant ketone body in the bloodstream during ketosis and is the primary energy substrate delivered to tissues.

Question 2

What blood ketone level (mmol/L) is generally considered the threshold for nutritional ketosis?

Accepted Answer

0.5-3.0 mmol/L

Answer

Nutritional ketosis is generally defined as blood beta-hydroxybutyrate levels between 0.5 and 3.0 mmol/L, achieved through dietary restriction of carbohydrates.

Question 3

Which condition involves dangerously high ketone levels (often above 10 mmol/L) and is a medical emergency distinct from nutritional ketosis?

Accepted Answer

Diabetic ketoacidosis (DKA)

Answer

Diabetic ketoacidosis (DKA) is a life-threatening condition seen primarily in type 1 diabetics where ketones rise to dangerous levels due to severe insulin deficiency.

Question 4

On a ketogenic diet, what process does the liver use to produce glucose for tissues that still require it (like red blood cells)?

Accepted Answer

Gluconeogenesis

Answer

Gluconeogenesis is the metabolic pathway by which the liver synthesizes new glucose from non-carbohydrate precursors such as amino acids, glycerol, and lactate.

Question 5

What is the typical timeframe for an otherwise healthy person to enter ketosis after starting a strict ketogenic diet?

Accepted Answer

2-7 days

Answer

Most people enter nutritional ketosis within 2-7 days of strictly restricting carbohydrates, depending on activity level and how quickly glycogen stores are depleted.

Keto Diet Practice Test

Keto Diet Practice Test

Keto Diet Fundamentals and Core Concepts 3