Prompts / Health, Fitness & Food

ChatGPT prompt for a diet

This prompt produces a practical eating plan based on your goals, routine, food preferences, and health context. Use it for meal structure and grocery planning, not to diagnose conditions or replace clinical care.

PromptOpen ChatGPTOpen Claude
Help me build a practical eating plan for [GOAL]. My health context, diagnoses, medications, allergies, pregnancy status, and clinician instructions are: [HEALTH CONTEXT]. My current eating pattern, schedule, cooking ability, and budget are: [ROUTINE AND BUDGET]. Foods I enjoy, avoid, or cannot eat are: [FOOD PREFERENCES]. My relevant measurements and activity level are: [MEASUREMENTS AND ACTIVITY].

Act as a nutrition-support assistant, not a doctor or dietitian. Do not diagnose, prescribe treatment, recommend medication changes, promise weight-loss results, or create a very-low-calorie, detox, purge, or fasting protocol. If I report pregnancy, an eating disorder or its history, diabetes treated with insulin or glucose-lowering medicines, kidney disease, severe food allergies, unexplained weight loss, or other urgent symptoms, explain why individualized clinician guidance is needed before major changes.

Produce a 7-day flexible meal framework, not a rigid menu. Include:
1. A goal summary and safety notes based only on my supplied context.
2. A daily meal-and-snack structure with approximate portions using household measures and protein, fiber, produce, and hydration anchors. Give calorie or macro ranges only when enough inputs support them, and label them as estimates.
3. Seven breakfast, lunch, dinner, and snack combinations that use overlapping ingredients, plus two substitutions for each restricted or disliked food.
4. A consolidated grocery list grouped by produce, protein, grains or starches, dairy or alternatives, pantry, and convenience items.
5. A weekly adjustment plan based on hunger, energy, digestion, adherence, and clinically relevant symptoms, including when to stop and contact a professional.

Ask up to 3 clarifying questions only if a required input is missing. Before answering, check that every suggested food respects my allergies, restrictions, and clinician instructions, and flag any nutrition claim that needs a registered dietitian or physician to individualize.

Fill in

PlaceholderWhat to enterExample
[GOAL]State your goal, such as steadier energy, meal planning, or gradual weight change.Build weekday meals that support gradual weight loss without feeling hungry in the afternoon.
[HEALTH CONTEXT]List relevant medical conditions, medications, allergies, pregnancy status, and advice from your clinician.No diagnosed conditions, no medications, allergic to cashews, not pregnant, no clinician instructions.
[ROUTINE AND BUDGET]Describe a typical week of eating, meal times, cooking access, time limits, and grocery budget.I usually skip breakfast, buy lunch near work, cook 30 minutes on weeknights, and spend about $95 a week for one person.
[FOOD PREFERENCES]List foods you like, dislike, avoid for cultural or ethical reasons, and cannot eat.I like eggs, chicken thighs, lentils, Greek yogurt, rice, berries, and spicy food; I dislike mushrooms and avoid cashews.
[MEASUREMENTS AND ACTIVITY]Provide optional age range, height, weight, recent changes, and usual movement if you want estimates.Age 34, 5 feet 6 inches, 176 pounds, walks 35 minutes five days a week; no recent unexplained weight change.

How to use

  1. Paste the prompt with allergies, medications, and clinician instructions first, then add practical details such as cooking time and budget.
  2. Check the plan for foods you actually tolerate and for enough portable meals on your busiest days.
  3. Use the grocery list for one week, then note hunger, energy, digestion, and how often you used substitutions.
  4. Follow up with: “Revise this for three office lunches that can be prepared Sunday and remain safe in a refrigerator for three days.”

Variations

High-protein meals

Use this when protein intake is a practical priority.

Variation
Create a 7-day high-protein meal framework for [GOAL]. My health conditions, medications, allergies, and clinician guidance are [HEALTH CONTEXT]. My food preferences and dietary pattern are [PREFERENCES]. I have [COOKING TIME] and [BUDGET] each week. Give protein-rich meal options with household portions, fiber-rich sides, and substitutions; do not prescribe a calorie target unless enough inputs support an estimate. Include a grocery list and food-safety notes for batch cooking. Avoid powders or supplements unless I ask for them. Ask up to 3 questions only if required. Check every suggestion against my restrictions and flag reasons to consult a dietitian.

Diabetes appointment prep

Use this to prepare food questions for a clinician.

Variation
Help me prepare for a diet conversation with my diabetes care team. My diagnosis, medications, glucose-monitoring approach, and recent patterns are [DIABETES CONTEXT]. My usual meals and challenges are [CURRENT EATING]. My questions and goals are [GOALS]. Create a one-page appointment summary, a three-day food-and-glucose log template, and 10 focused questions about meal timing, carbohydrates, hypoglycemia, and medication coordination. Do not change medication doses, prescribe carbohydrate targets, or interpret urgent symptoms. Tell me what symptoms require prompt medical help. Ask up to 3 questions only if needed. Check that no advice conflicts with my supplied clinician instructions.

Budget meal prep

Use this when lower cost and repeatable meals matter most.

Variation
Build a budget-conscious meal-prep plan for [NUMBER OF PEOPLE] people for [DAYS] days. Our dietary restrictions, allergies, and health considerations are [RESTRICTIONS]. Budget, kitchen equipment, and available prep time are [BUDGET AND KITCHEN]. Preferred foods are [PREFERENCES]. Provide a repeating meal matrix, precise ingredient quantities, safe storage guidance, a grocery list, and leftovers that repurpose components without repeating the same meal excessively. Do not claim nutritional treatment benefits. Ask up to 3 questions only if required. Check that allergens are excluded and cooked-food storage times are stated conservatively.

Tips

  • Put allergies, medication-related dietary instructions, and pregnancy status at the top of the input so they constrain every meal suggestion.
  • Ask for a meal framework with substitutions instead of a rigid menu; it survives restaurant meals, leftovers, and changing schedules better.
  • Use household portions and a grocery list before pursuing precise macro targets, especially if you do not weigh food consistently.
  • If you have diabetes medication, kidney disease, a history of disordered eating, or pregnancy, use AI to organize questions and logs for your clinician rather than to make major diet changes.

FAQ

Can ChatGPT make a diet plan for weight loss?

It can suggest practical meal structure, but it cannot assess your medical needs or guarantee an outcome. A clinician or dietitian is important when health conditions or medications affect eating.

Should I share exact health details?

Share only what is needed for safe constraints. Do not include medical record numbers, account information, or identifying details.

Can AI calculate my calories and macros?

It can estimate them when inputs are complete, but portion size, product labels, activity, and health needs create meaningful uncertainty.

Related prompts

All Health, Fitness & Food prompts →

Get a few prompts like this every week

Something Big is a free AI newsletter read by 50,000+ professionals. One email a week with prompts and tools that work, plus what changed in AI and what to do about it.