Health Information API

A FastAPI application that provides various health and nutrition calculators using FastAPI-MCP.

Features

• BMI Calculator
• Body Frame Size Calculator
• Body Fat Percentage Calculator (U.S. Navy Method)
• Macronutrient Calculator
• Food Nutrition Calculator (using USDA FoodData Central API)

Installation

1. Clone the repository:

git clone https://github.com/yourusername/bmi_calc.git
cd bmi_calc

2. Install dependencies:

pip install -r requirements.txt

3. Set up environment variables:

# For the USDA FoodData Central API
# Get your API key from https://fdc.nal.usda.gov/api-key-signup.html
export USDA_API_KEY="your_api_key_here"

# (Optional) For the OpenAI API
export OPENAI_API_KEY="your_api_key_here"

Running the Application

uvicorn main:app --reload

The API will be available at http://localhost:8000

API Documentation

Once the application is running, you can access the interactive API documentation at:

• Swagger UI: http://localhost:8000/docs
• ReDoc: http://localhost:8000/redoc

API Endpoints

BMI Calculator

Endpoint: POST /bmi

Calculate Body Mass Index (BMI) based on weight and height.

Request Body:

{
  "weight_kg": 70,
  "height_cm": 175
}

Response:

{
  "bmi": 22.86,
  "category": "Normal weight"
}

Body Frame Size Calculator

Endpoint: POST /body-frame

Determine body frame size based on wrist circumference and height.

Request Body:

{
  "wrist_circumference_cm": 18,
  "height_cm": 180,
  "gender": "male"
}

Response:

{
  "frame_size": "MEDIUM"
}

Body Fat Percentage Calculator

Endpoint: POST /body-fat

Calculate body fat percentage using the U.S. Navy method.

Request Body (Male):

{
  "gender": "male",
  "age": 30,
  "weight_kg": 80,
  "height_cm": 180,
  "neck_circumference_cm": 38,
  "waist_circumference_cm": 85
}

Request Body (Female):

{
  "gender": "female",
  "age": 30,
  "weight_kg": 65,
  "height_cm": 165,
  "neck_circumference_cm": 32,
  "waist_circumference_cm": 70,
  "hip_circumference_cm": 95
}

Response:

{
  "body_fat_percentage": 15.3,
  "category": "Fitness"
}

Macronutrient Calculator

Endpoint: POST /macros

Calculate daily calorie and macronutrient targets.

Request Body:

{
  "gender": "male",
  "age": 30,
  "weight_kg": 80,
  "height_cm": 180,
  "activity_level": "moderate",
  "goal": "maintain",
  "body_fat_percentage": 15
}

Response:

{
  "calories": 2800,
  "protein_g": 122,
  "carbs_g": 350,
  "fat_g": 78
}

Food Nutrition Calculator

Endpoint: GET /food-nutrition

Calculate the nutritional content of a list of food ingredients and amounts.

Query Parameters:

• ingredients: List of food ingredients (e.g., 'apple', 'chicken breast')
• amounts: List of amounts in grams corresponding to each ingredient

Example Request:

GET /food-nutrition?ingredients=apple&ingredients=chicken%20breast&amounts=100&amounts=150

Response:

{
  "total_calories": 278.5,
  "total_protein_g": 31.45,
  "total_carbs_g": 14.8,
  "total_fat_g": 8.7,
  "total_fiber_g": 2.4,
  "total_sugar_g": 10.4,
  "foods": [
    {
      "name": "Apple, raw",
      "amount_g": 100,
      "calories": 52,
      "protein_g": 0.3,
      "carbs_g": 13.8,
      "fat_g": 0.2,
      "fiber_g": 2.4,
      "sugar_g": 10.4
    },
    {
      "name": "Chicken, breast, meat only, cooked, roasted",
      "amount_g": 150,
      "calories": 226.5,
      "protein_g": 31.15,
      "carbs_g": 1,
      "fat_g": 8.5,
      "fiber_g": 0,
      "sugar_g": 0
    }
  ]
}

Running Tests

pytest -v

License

MIT