Health & Nutrition vocabulary is not a random pile of words to be hauled into memory one at a time — it is a connected set of ideas. Nearly every term is either built from a few shared word-parts or is one of a handful of reasoning tools you reuse all year. Know that macro- means large and micro- means small, and macronutrient announces itself — the nutrients we need in large amounts. Memorizing words is linear; understanding the ideas underneath is exponential — a couple dozen core ideas unlock hundreds of terms and headlines.
Keep a running terms-and-ideas page at the back of the lab notebook; add to it every time a new term, unit, or concept appears. When you hit an unfamiliar term, break it apart out loud and guess the meaning before you look it up — that retrieval is what fixes it in memory.
| Term | Meaning | Example & what it tells you |
|---|---|---|
| macronutrient | a nutrient needed in large amounts | carbohydrates, proteins, and fats — they supply nearly all the energy in food. |
| micronutrient | a vitamin or mineral needed in small amounts | vitamin C, iron, calcium — small quantities, big jobs. |
| Calorie | a unit of energy from food | a label lists Calories per serving — a measure of energy, not a “good” or “bad” number. |
| metabolism | turning food into energy | digestion and the release of energy in cells — how the body powers everything it does. |
| energy balance | energy in versus energy out | energy from food against energy the body uses — a science idea, not a diet rule. |
| nutrient density | nutrients per unit of energy | a food rich in vitamins per Calorie — compare foods without labeling any “good” or “bad.” |
| serving size | the label’s reference amount | “2 crackers” or “1 cup” — every number on the label is per this amount, so read it first. |
| % Daily Value | share of a day’s reference intake | 20% DV of fiber in a serving — a quick way to see “a little” versus “a lot.” |
| added sugar | sugar added in processing | sugar stirred into cereal versus sugar in whole fruit — the label lists it separately. |
| whole food | food close to its natural form | an apple, plain oats, a cooked bean — a comparison point, described, not prescribed. |
| heart-rate recovery | how fast heart rate drops after activity | beats recovered one minute after exercise — a number about function, never about how a body looks. |
| Term | Meaning | Example & what it tells you |
|---|---|---|
| fiber | plant matter the body does not fully digest | found in beans, oats, and vegetables — supports digestion, and the label lists it. |
| protein | a macronutrient made of amino acids | found in beans, eggs, fish, and grains — an energy nutrient with a building-and-repair role. |
| hydration | keeping the body supplied with water | replacing water lost through sweat — water carries nutrients and regulates temperature. |
| vitamin | an organic micronutrient | vitamin C, vitamin D — each has a specific role, and most come from a varied diet. |
| mineral | an inorganic micronutrient | iron, calcium, potassium — small amounts support bones, blood, nerves, and muscle. |
| immunity | the body’s defense against disease | antibodies formed after an infection or a vaccine — how prevention works. |
| correlation vs. causation | moving together versus one causing the other | ice-cream sales and sunburns both rise in summer — a link is not proof of cause. |
| controlled trial | treated group compared to an untreated one | James Lind’s 1747 scurvy trial at sea — how science tells an effect from a coincidence. |
| BMI (population tool) | a height-and-weight ratio for large groups | used to study whole populations — a tool with real limits, never a personal judgment. |
Don’t swallow the table in one sitting. Keep this page open during reading and at the bench; each time you meet an unfamiliar term, say what you think it means out loud, then check. The habit leaves your effort free for the part of health & nutrition that actually rewards it — reasoning about the evidence.