Where is the problem with the script, i want my player to die when his health is <1

Assets\Health.cs(43,21): error CS0119: 'GameObject' is a type, which is not valid in the given context

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI;

public class Health : MonoBehaviour { public int health; public int numOfHearts;

 public Image[] hearts;
 public Sprite fullHeart;
 public Sprite emptyHeart;

 void Update(){

     if (health > numOfHearts)
     {
         health = numOfHearts;
     }
     for (int i = 0; i < hearts.Length; i++)
     {
         if (i < health)
         {
             hearts[i].sprite = fullHeart;
         }
         else
         {
             hearts[i].sprite = emptyHeart;
         }

         if (i < numOfHearts)
         {
             hearts[i].enabled = true;
         }
         else
         {
             hearts[i].enabled = false;
         }
     }
     if (health < 1)
     {
         Destroy(GameObject);
     }
 }

}