4. Minerals which are compounds of metals and non-metals found in various foods which are required in low quantities for the body to synthesize various complex compounds for innumerable body functions.
5. Vitamins, which are complex compounds
6.Water, the main constituent of body cells and blood and the medium for expulsion of unwanted soluble wastes materials.
7. Ingredients that enhances taste, smell and color of food.
People have many common features and at the same time are different in many other features. So, eating habits, likes and dislikes and the manner in which food is digested, absorbed and utilized by the body all differ from person to person.
While statistical results published by various kinds of researchers may be useful for enriching our general knowledge in food and food related benefits and problems, it is foolishness to blindly believe such data as universal truths.
Enjoying a good or tasty food is not a sin. But living only for food indulgence is nothing less than a sin.
How much one should eat? And how often? It is foolishness to follow some rules always. If you follow rules for every thing, you degrade yourself as a robot. You degrade your human existence to that of a humanoid.
It is better that you make wise decisions based on your own judgments. After all why do you have that huge brain with all those intelligence if you are not to use it ?
At the same time, it is not a good idea to waste your time always thinking about food to take those wise decisions. There are much more important things in this life than food.
Human life is a mixture of many things. It involves survival, material existence, creativity, friendship and fellowship, discharge of duties and responsibilities and a desire to find the real force behind life whom we sometimes call as God. The latter desire when nurtured properly progresses towards an understanding towards the purpose of life. A man or woman who is realizing the purpose of life has progressed towards what is known as spirituality.
How to progress from material well being to spiritual well being? Is it essential?
Again, your own assessment is the best guide. You have all the inherent faculties and abilities for that judgement.
Is it possible for life to sustain without taking food?
Logically speaking, it should be possible. Food is required as an energy source for us because our body hardware is presently designed in that manner. Those who have designed it that way, logically should have known the methods of designing it in some other way as well.
For example, look at the plants. They are living. They take energy from sunlight and even convert the excess light energy as food for those living beings of the animal kingdom.
The divine designers of plants and animals have the knowledge to do it.
Then, why did they not give us that ability?
I think it is foolishness to question the higher intellectual wisdom of the divine designers of life.
Perhaps, they might disclose those secrets to us some appropriate time.
I am fortunate to learn some thing of the divine wisdom and I am truly amazed!