AIプロンプト: 栄養アドバイス

良い食事をすることは、退屈な食事をすることではありません。これらのプロンプトは、目標、予算、味の好みに合った食事プランを構築する手助けをします。準備に何時間もかけずに。ChatGPT、Gemini、Claudeでテスト済みなので、食事ニーズに合ったモデルを選べます。重要:AIは、特に疾患や摂食障害に関しては、登録栄養士の代わりにはなりません。

最終テスト日 Feb 15, 2026 · モデル: GPT-4o, Gemini 2.0, Claude 3.5 Sonnet, Grok 2
やりたいこと プロンプト 最適な用途
マクロ栄養素の目標を計算する マクロ計算 ChatGPT
効率的なミールプレップ計画を作成する ミールプレップ設計 Gemini
食事プランの問題点を特定する ダイエットデバッガー Claude
効率的な食料品の買い物計画を立てる 食料品最適化 Gemini
健康的なスナックプランを作成する スナック戦略 ChatGPT
サプリメントの必要性と選び方を理解する サプリメントガイド Claude

マクロ計算

マクロ栄養素の目標を計算する

Help me figure out my daily macronutrient targets.

Goal: [fat loss / muscle gain / maintenance / recomposition]
Current stats: [age, sex, height, weight]
Activity level: [sedentary / lightly active / moderately active / very active]
Training: [type and frequency of exercise]
Diet preference: [no restriction / keto / vegan / vegetarian / paleo / other]
Meals per day: [number of meals and snacks]

Calculate and provide:
1. Estimated TDEE with the formula and reasoning shown
2. Recommended daily calories with adjustment for goal
3. Macro split in grams: protein, carbs, fat (with percentage breakdown)
4. A sample day of eating that hits these macros exactly
5. How to adjust macros on training vs. rest days
6. When and how to recalculate as my body changes

最適な用途: CHATGPT

Geminiは最も正確なマクロ計算を提供し、活動レベルと目標に基づいた調整が適切です。計算の根拠も明確に説明します。

テスト済み Feb 15, 2026

プロのコツ

マクロは目安であって厳密なルールではありません。±10%の範囲で一貫して守れれば十分です。完璧を追求すると続けられなくなります。

ミールプレップ設計

効率的なミールプレップ計画を作成する

Design a meal prep system for my week.

Calorie target: [daily calories]
Macro targets: [protein/carbs/fat in grams, if known]
Diet restrictions: [allergies, intolerances, preferences]
Cooking skill: [beginner / intermediate / advanced]
Prep time available: [hours on prep day]
Budget: [weekly grocery budget]
Household size: [cooking for how many people]

Create:
1. A 5-day meal plan with breakfast, lunch, dinner, and snacks
2. A consolidated grocery list organized by store section
3. A prep-day timeline: what to cook in what order
4. Storage instructions and shelf life for each prepped item
5. Three meals that freeze well for backup
6. Quick 10-minute fallback meals when prep runs out

最適な用途: GEMINI

ChatGPTは最も実用的なミールプレップ計画を作成し、食材の重複利用と調理効率が最適化されています。

テスト済み Feb 15, 2026

プロのコツ

最初のミールプレップは3食分だけ作りましょう。5日分を一度に作ると圧倒されて続かないことが多いです。まず小さく始めてスキルを磨きましょう。

ダイエットデバッガー

食事プランの問題点を特定する

Analyze my current diet and tell me what to fix.

Typical day of eating:
[List everything you eat and drink with approximate portions and times]

Goal: [fat loss / muscle gain / more energy / better sleep / general health]
Current issues: [fatigue, bloating, cravings, weight stall, etc.]
Exercise routine: [type and frequency]
Sleep: [hours and quality]
Water intake: [daily amount]

Analyze and provide:
1. Estimated calorie and macro breakdown of my current intake
2. The top 3 nutritional gaps or problems in my diet
3. Specific food swaps that fix each issue (not just 'eat more vegetables')
4. Meal timing adjustments based on my schedule and training
5. A 'quick win' change I can make today for immediate improvement
6. A disclaimer about consulting a healthcare provider for persistent issues

最適な用途: CLAUDE

Claudeは最も正直な食事分析を提供し、流行のダイエットのリスクを指摘し、持続可能な改善を提案します。

テスト済み Feb 15, 2026

プロのコツ

3日間の食事を写真で記録してからAIに相談しましょう。記憶からの報告は実際の摂取量と大きく異なることが多いです。

食料品最適化

効率的な食料品の買い物計画を立てる

Build me a healthy grocery list that fits my budget.

Weekly budget: [$amount]
Household size: [number of people]
Diet goals: [what you're trying to achieve nutritionally]
Diet restrictions: [allergies, preferences, foods you hate]
Store preference: [where you usually shop]
Cooking frequency: [meals cooked at home per week]

Provide:
1. A prioritized grocery list: essentials first, nice-to-haves last
2. Cost-per-serving breakdown for the most expensive items
3. Bulk buying recommendations and what's worth buying in bulk
4. Seasonal produce suggestions for the current month
5. A pantry staples checklist that makes any meal possible
6. Three money-saving swaps that don't sacrifice nutrition

最適な用途: GEMINI

ChatGPTは最も効率的な買い物リストを作成し、食材の無駄を減らすメニュー計画が優れています。

テスト済み Feb 15, 2026

プロのコツ

空腹時に買い物リストを作らないでください。満腹状態で作ったリストの方がはるかに合理的で、衝動買いが減ります。

スナック戦略

健康的なスナックプランを作成する

Help me build a snacking strategy that supports my goals.

Goal: [fat loss / muscle gain / sustained energy / reduce sugar cravings]
Current snacking habits: [what you snack on and when]
Biggest craving: [sweet / salty / crunchy / chocolate / carbs]
Work environment: [office / remote / on the go]
Macro targets: [if tracking macros]
Allergies or restrictions: [list any]

Design:
1. 10 snack options organized by goal (protein-rich, energy-boosting, low-calorie)
2. A snack prep plan for the week (what to batch-make Sunday)
3. Smart swaps for my current cravings that satisfy without derailing
4. Portion control strategies that don't require measuring everything
5. A desk drawer / bag essentials list for emergency healthy snacking
6. When to snack vs. when hunger means you need a real meal

最適な用途: CHATGPT

Geminiは最も栄養バランスの取れたスナック提案を行い、準備の手軽さも考慮しています。

テスト済み Feb 15, 2026

プロのコツ

健康的なスナックは事前に準備しておかないと、不健康な選択肢に負けます。日曜日に1週間分のスナックを小分けにしておきましょう。

サプリメントガイド

サプリメントの必要性と選び方を理解する

Help me figure out which supplements are actually worth taking.

Goal: [performance / recovery / general health / specific deficiency]
Current diet: [brief overview of daily eating]
Training: [type and frequency]
Current supplements: [what you already take]
Budget for supplements: [monthly amount]
Health conditions: [any relevant conditions or medications]

Provide:
1. Which of my current supplements are worth keeping and which are a waste of money
2. 3-5 supplements with the strongest evidence base for my specific goals
3. Recommended dosages, timing, and whether to take with food
4. Potential interactions between supplements and with any medications
5. Red flags in supplement marketing claims to watch for
6. A clear disclaimer: this is informational, not medical advice — consult a doctor before starting any supplement regimen

最適な用途: CLAUDE

Claudeは最も正直なサプリメントアドバイスを提供し、マーケティングに惑わされない科学的根拠に基づいた推奨をします。

テスト済み Feb 15, 2026

プロのコツ

ほとんどの人に必要なサプリメントはビタミンDとマグネシウムだけです。それ以外は食事から摂取できます。AIに「このサプリメントの科学的根拠は?」と必ず聞きましょう。

モデル比較

実際のテストに基づいています — 推測ではありません。 テスト方法を見る

G

Gemini

Best for meal prep logistics and grocery budgeting. Creates well-organized shopping lists and cooking timelines with realistic cost estimates. Less nuanced with complex dietary restrictions.

結果元: Gemini 2.0 Flash · テスト済み Feb 15, 2026
C

ChatGPT

Best for macro calculations and creative meal ideas. Shows math clearly and generates diverse food options with specific brands and products. Can suggest overly complex meals for beginners.

結果元: GPT-4o · テスト済み Feb 15, 2026
C

Claude

Best for diet analysis and supplement guidance. Provides the most balanced, evidence-based recommendations and consistently flags when professional advice is needed. Sometimes overly cautious in recommendations.

結果元: Claude 3.5 Sonnet · テスト済み Feb 15, 2026
G

Grok

Cuts through diet fads with refreshingly blunt, honest nutrition advice. Excellent at debunking supplement myths and giving straight answers, though less thorough on clinical dietary restrictions than Claude.

結果元: Grok 2 · テスト済み Feb 15, 2026

NailedItで試す

上記のプロンプトをNailedItに貼り付けて、モデルを並べて比較しましょう。

プロのコツ

1

AI nutrition advice is educational, not medical. AI models are not dietitians and cannot account for medical conditions, medications, or eating disorder histories. Use AI-generated meal plans as a starting framework, and consult a registered dietitian for personalized clinical guidance.

2

Track before you optimize. Log your current eating for 3-5 days before asking AI to build you a plan. You can't improve what you haven't measured, and AI gives dramatically better advice when it sees your real habits, not your ideal ones.

3

The best diet is the one you'll actually follow. AI can build you a perfect macro-balanced meal plan, but if you hate every meal on it, you'll quit by day four. Always include foods you enjoy in your prompt so AI works around your preferences instead of against them.