After eating chips and soda at 3pm, you are hungry again at 4pm. What best explains this?
AChips and soda contain very few calories, so they cannot satisfy hunger
BProcessed snacks are high in refined sugar and starch, which digest quickly and cause a blood-sugar spike then crash, leaving you hungry again soon
CYou should have eaten more chips to feel full longer
DHunger always returns within an hour regardless of what you eat
Refined sugar and refined starch digest rapidly, causing a quick rise in blood sugar followed by an equally quick drop. That blood-sugar crash triggers hunger signals again within an hour. Snacks with fiber, protein, or healthy fat digest more slowly, keeping blood sugar stable and extending the time before you feel hungry again.
Question 2 Multiple Choice
You want to eat more vegetables as snacks. Which approach is MOST likely to actually change your behavior?
ADecide to try harder and rely on discipline to choose vegetables
BWrite a note to yourself reminding you that vegetables are healthy
CWash and cut vegetables into pieces and store them at eye level in the refrigerator so they are easy to grab
DBuy vegetables every week but leave them whole in the crisper drawer
Environment design is more powerful than willpower. Cut, ready-to-eat vegetables at eye level require almost no effort to choose. Whole vegetables hidden in the crisper require washing, cutting, and prep at snack time — barriers that most people skip when hungry. The research-backed insight is that healthier choices happen most reliably when they are made effortless, not when extra willpower is summoned.
Question 3 True / False
A snack of apple slices with peanut butter provides longer-lasting satiety than an apple alone, because peanut butter adds protein and healthy fat that slow digestion.
TTrue
FFalse
Answer: True
Correct. An apple provides fiber and natural sugar but digests relatively quickly on its own. Adding peanut butter introduces protein and healthy fat, both of which slow digestion and trigger satiety hormones. Combining at least two nutrient types (fiber, protein, or healthy fat) significantly extends the time before hunger returns compared to a single-nutrient snack.
Question 4 True / False
Most snacking between meals is harmful to health because it adds extra calories.
TTrue
FFalse
Answer: False
The healthfulness of snacking depends on what you eat and why. A small, nutrient-dense snack (apple and peanut butter, carrots and hummus) eaten because you are genuinely hungry 2–3 hours after a meal can stabilize blood sugar and prevent overeating at the next meal. The problem is not snacking itself — it is choosing calorie-dense, nutrient-poor processed foods, or eating from habit or boredom rather than genuine hunger.
Question 5 Short Answer
Why do fiber, protein, and healthy fat each contribute to feeling full longer after a snack? How does this differ from what happens with a sugary processed snack?
Think about your answer, then reveal below.
Model answer: Fiber physically slows digestion; protein triggers satiety hormones and takes longer to break down; healthy fat slows how quickly food leaves the stomach. Together they prevent sharp blood-sugar swings and extend fullness. A sugary processed snack is absorbed rapidly, causes a quick blood-sugar spike and then a crash, which signals hunger again soon after.
The three nutrients work through different mechanisms but all converge on the same result: slower, more stable energy release. This is why pairing even one of them with a carbohydrate source (apple + peanut butter, carrots + hummus) dramatically outperforms a refined-carbohydrate snack for sustained energy.