Damage Over Time Help?

Sorry, please have mercy on my extreme noobiness. I need help with a damage over time code, preferably not a separate script. Basically I made a hunger and thirst bar using a tutorial, because I’m nooby like that, and i need them to degrade 1 hunger point/thirst point (out of total 100 hunger/thirst points) every 10 seconds unless it’s already full, but no matter how much I try myself, I can never get it to work, all i need is a tiny little code snippet. I’m so sorry for asking for a premade thing, but I’m really desperate… All I know is that it has something to do with:

"Time.deltaTime;" 

and

"while(curHunger < maxHunger)

    curHunger - 1"

Or something like that.

This is the code I use for my hunger bar, it was modified from BergZurgArcade’s Health Bar…

using UnityEngine;

using System.Collections;

 

public class PlayerHunger : MonoBehaviour {

    public int maxHunger = 100;

    public int curHunger = 100;

    

    

    public float hungerBarLength;

 

    // Use this for initialization

    void Start () {

        hungerBarLength = Screen.width / 4;

    }

    // Update is called once per frame

    void Update () {

        AdjustCurrentHunger(0);

    }

    

    void OnGUI(){

        GUI.Box(new Rect(5, 540, hungerBarLength, 20), curHunger + "/" + maxHunger);

    }

    

    public void AdjustCurrentHunger(int adj){

        curHunger += adj;

        

        if(curHunger < 1)

            curHunger = 0;

        

        if(curHunger > maxHunger)

            curHunger = maxHunger;

        

        if(maxHunger < 1)

            maxHunger = 1;

        if(curHunger <= 0)

            Destroy(gameObject);

        hungerBarLength = (Screen.width / 4) * (curHunger / (float)maxHunger);

    }

}

BY THE WAY, I NEED THE CODE SNIPPET TO BE IN C#
Thanks in advance for your co-operation!

void OnEnable()
{
InvokeRepeating(“DegradeHunger”, 10, 10);
}

 void DegradeHunger()
 {
      if(curHunger<maxHunger) curHunger++;
 }