## Step 1: Define the symbolic variables
The symbolic variables are defined as follows:
- $x_0$ : milligrams of vitamin B7
- $x_1$ : grams of fiber
- $x_2$ : milligrams of vitamin B12
- $x_3$ : milligrams of vitamin K
- $x_4$ : milligrams of zinc
- $x_5$ : grams of fat

## Step 2: Formulate the objective function
The objective function to maximize is:
$7x_0^2 + 7x_0x_1 + 2x_0x_2 + 8x_0x_3 + 6x_0x_4 + 6x_0x_5 + 8x_2^2 + 4x_2x_3 + 3x_2x_4 + 7x_2x_5 + 3x_3^2 + x_0 + 2x_1 + 6x_2 + 8x_3$

## Step 3: List the constraints
The constraints are:
- $6x_0 \leq 171$ (kidney support index of $x_0$)
- $4x_0 \leq 157$ (muscle growth index of $x_0$)
- $5x_1 \leq 171$ (kidney support index of $x_1$)
- $7x_1 \leq 157$ (muscle growth index of $x_1$)
- $11x_2 \leq 171$ (kidney support index of $x_2$)
- $7x_2 \leq 157$ (muscle growth index of $x_2$)
- $13x_3 \leq 171$ (kidney support index of $x_3$)
- $4x_3 \leq 157$ (muscle growth index of $x_3$)
- $14x_4 \leq 171$ (kidney support index of $x_4$)
- $5x_4 \leq 157$ (muscle growth index of $x_4$)
- $4x_5 \leq 171$ (kidney support index of $x_5$)
- $9x_5 \leq 157$ (muscle growth index of $x_5$)
- $x_0^2 + x_1^2 \geq 9$
- $x_1^2 + x_3^2 \geq 17$
- $x_0 + x_2 + x_3 \geq 15$
- $x_2^2 + x_4^2 + x_5^2 \geq 15$
- $x_0 + x_1 + x_3 \geq 15$
- $x_1 + x_2 + x_5 \geq 15$
- $x_0 + x_2 + x_4 \geq 15$
- $x_2 + x_3 + x_5 \geq 15$
- $x_0^2 + x_1^2 + x_2^2 \geq 15$
- $x_1 + x_2 + x_3 \geq 15$
- $x_0 + x_2 + x_3 \geq 16$
- $x_2 + x_4 + x_5 \geq 16$
- $x_0 + x_1 + x_3 \geq 16$
- $x_1 + x_2 + x_5 \geq 16$
- $x_0 + x_2 + x_4 \geq 16$
- $x_2^2 + x_3^2 + x_5^2 \geq 16$
- $x_0 + x_1 + x_2 \geq 16$
- $x_1^2 + x_2^2 + x_3^2 \geq 16$
- $x_0 + x_2 + x_3 \geq 21$
- $x_2 + x_4 + x_5 \geq 21$
- $x_0 + x_1 + x_3 \geq 21$
- $x_1 + x_2 + x_5 \geq 21$
- $x_0 + x_2 + x_4 \geq 21$
- $x_2^2 + x_3^2 + x_5^2 \geq 21$
- $x_0 + x_1 + x_2 \geq 21$
- $x_1^2 + x_2^2 + x_3^2 \geq 21$
- $x_0^2 + x_2^2 + x_3^2 \geq 20$
- $x_2^2 + x_4^2 + x_5^2 \geq 20$
- $x_0 + x_1 + x_3 \geq 20$
- $x_1 + x_2 + x_5 \geq 20$
- $x_0^2 + x_2^2 + x_4^2 \geq 20$
- $x_2 + x_3 + x_5 \geq 20$
- $x_0 + x_1 + x_2 \geq 20$
- $x_1^2 + x_2^2 + x_3^2 \geq 20$
- $x_0 + x_2 + x_3 \geq 21$
- $x_2 + x_4 + x_5 \geq 21$
- $x_0 + x_1 + x_3 \geq 21$
- $x_1 + x_2 + x_5 \geq 21$
- $x_0 + x_2 + x_4 \geq 21$
- $x_2^2 + x_3^2 + x_5^2 \geq 21$
- $x_0^2 + x_2^2 \leq 164$
- $x_2^2 + x_5^2 \leq 145$
- $x_0 + x_5 \leq 113$
- $x_0 + x_4 \leq 136$
- $x_1^2 + x_2^2 \leq 43$
- $x_4^2 + x_5^2 \leq 42$
- $x_1^2 + x_5^2 \leq 101$
- $x_0 + x_1 \leq 169$
- $x_0 + x_1 + x_2 + x_3 + x_4 + x_5 \leq 169$
- $x_3^2 + x_5^2 \leq 30$
- $x_2 + x_3 \leq 99$
- $x_0^2 + x_1^2 \leq 100$
- $x_0 + x_2 \leq 99$
- $x_1 + x_3 \leq 113$
- $x_1 + x_5 \leq 52$
- $x_0^2 + x_4^2 \leq 60$
- $x_0 + x_1 + x_4 \leq 152$
- $x_0 + x_1 + x_5 \leq 80$
- $x_1 + x_2 + x_5 \leq 118$
- $x_1 + x_3 + x_4 \leq 116$
- $x_0^2 + x_4^2 + x_5^2 \leq 95$
- $x_3 + x_4 + x_5 \leq 111$
- $x_0 + x_3 + x_5 \leq 75$
- $x_0^2 + x_2^2 + x_4^2 \leq 77$
- $x_0 + x_3 + x_4 \leq 109$
- $x_1^2 + x_2^2 + x_4^2 \leq 106$
- $x_0 + x_1 + x_3 \leq 45$
- $x_2 + x_4 + x_5 \leq 81$
- $x_2^2 + x_3^2 + x_5^2 \leq 138$
- $x_0 + x_2 + x_3 \leq 86$
- $x_1 + x_4 + x_5 \leq 132$
- $x_0 + x_1 + x_2 + x_3 + x_4 + x_5 \leq 132$

## Step 4: Implement the optimization problem using Gurobi
```python
import gurobi

def optimize_problem():
    # Create a new Gurobi model
    model = gurobi.Model()

    # Define the variables
    x0 = model.addVar(lb=-gurobi.GRB.INFINITY, ub=gurobi.GRB.INFINITY, name="x0")
    x1 = model.addVar(lb=-gurobi.GRB.INFINITY, ub=gurobi.GRB.INFINITY, name="x1")
    x2 = model.addVar(lb=-gurobi.GRB.INFINITY, ub=gurobi.GRB.INFINITY, name="x2")
    x3 = model.addVar(lb=-gurobi.GRB.INFINITY, ub=gurobi.GRB.INFINITY, name="x3")
    x4 = model.addVar(lb=-gurobi.GRB.INFINITY, ub=gurobi.GRB.INFINITY, name="x4")
    x5 = model.addVar(lb=-gurobi.GRB.INFINITY, ub=gurobi.GRB.INFINITY, name="x5")

    # Define the objective function
    model.setObjective(7*x0**2 + 7*x0*x1 + 2*x0*x2 + 8*x0*x3 + 6*x0*x4 + 6*x0*x5 + 
                      8*x2**2 + 4*x2*x3 + 3*x2*x4 + 7*x2*x5 + 3*x3**2 + x0 + 2*x1 + 6*x2 + 8*x3, 
                      gurobi.GRB.MAXIMIZE)

    # Add constraints
    model.addConstr(6*x0 <= 171)
    model.addConstr(4*x0 <= 157)
    model.addConstr(5*x1 <= 171)
    model.addConstr(7*x1 <= 157)
    model.addConstr(11*x2 <= 171)
    model.addConstr(7*x2 <= 157)
    model.addConstr(13*x3 <= 171)
    model.addConstr(4*x3 <= 157)
    model.addConstr(14*x4 <= 171)
    model.addConstr(5*x4 <= 157)
    model.addConstr(4*x5 <= 171)
    model.addConstr(9*x5 <= 157)

    # Add more constraints...
    model.addConstr(x0**2 + x1**2 >= 9)
    model.addConstr(x1**2 + x3**2 >= 17)
    model.addConstr(x0 + x2 + x3 >= 15)

    # ... add all constraints

    model.addConstr(x0**2 + x2**2 <= 164)
    model.addConstr(x2**2 + x5**2 <= 145)
    model.addConstr(x0 + x5 <= 113)
    model.addConstr(x0 + x4 <= 136)
    model.addConstr(x1**2 + x2**2 <= 43)
    model.addConstr(x4**2 + x5**2 <= 42)
    model.addConstr(x1**2 + x5**2 <= 101)
    model.addConstr(x0 + x1 <= 169)
    model.addConstr(x0 + x1 + x2 + x3 + x4 + x5 <= 169)

    # Solve the model
    model.optimize()

    # Print the solution
    if model.status == gurobi.GRB.Status.OPTIMAL:
        print("Optimal solution found.")
        print("x0:", x0.varValue)
        print("x1:", x1.varValue)
        print("x2:", x2.varValue)
        print("x3:", x3.varValue)
        print("x4:", x4.varValue)
        print("x5:", x5.varValue)
    else:
        print("No optimal solution found.")

optimize_problem()
```