Most people do not realize the crucial importance of freshness when it comes to produce. In the same way that seeds gradually die, fruits and vegetables go through a similar process as their nutritional content gradually oxidizes or is broken down by the vegetables own enzymes, but vegetables lose nutrition hundreds of times more rapidly than cereals. Produce was recently part of a living plant. It was connected to the vascular system of a plant and with few exceptions, is not intended by nature to remain intact after being cut. A lettuce or a zucchini was entirely alive at the moment of harvest, but from that point, its cells begin to die. Even if it is not yet attacked by bacteria, molds and fungi, its own internal enzymes have begun breaking down its own substances.
Vegetables, especially leafy vegetables, are far more critical in this respect than most ripe fruits. All, however, deteriorate much like radioactive material; they have a sort of half-life. The mineral content is stable, but in respect to the vitamins and enzymes and other complex organic components, each time period or "half life" results in the loss of half the nutrition. Suppose a lettuce has a half life of 48 hours, two days after harvest only 50 percent of the original nutrition remains. After two more days, half the remaining half is gone and only 25 percent is left. After two more days half of that 25 percent is lost. Thus six days after harvest and a lettuce contains only bout 12 percent of its original nutrition. A two day half-life is only hypothetical. Those types of produce I classify as very perishable probably do have a half-life of from 36 to 48 hours. Moderately perishable produce has a half life of about 72 hours; durable types of produce have half lives of 96 hours or longer.
| Very Perishable | Moderately Perishable | Durable |
| lettuce | zucchini | apple |
| spinach | eggplant | squash |
| Chinese cabbage | sweet peppers | oranges |
| kale | broccoli | cabbage |
| endive | cauliflower | carrot |
| peaches | apricots | lemons |
| parsley | beets |
The half life of produce can be lengthened by lowering its temperature. For that reason, sophisticated produce growers usually use hydrocooling. This process dumps a just-cut vegetable into icy water within minutes of being harvested, lowering core temperature to a few degrees above freezing almost immediately. When cut vegetables are crated up at field temperatures, and stacks of those crates are put in a cooler, it can take the inside of the stack 24 hours, or longer, to become chilled. Home gardeners should also practice hydrocooling. Fill your sink with cold water and wash/soak your harvest until it is thoroughly chilled before draining and refrigerating it. Or, harvest your garden early in the morning when temperatures are lowest.
Still, when you buy produce in the store it may have been sitting at room temperature for hours or possibly days.
The bottom line here: fresh is equally as important as unsprayed or organically grown!
The Real Truth About Salt And Sugar
First, let me remind certain food religionists: salt is salt is salt is salt and sugar is sugar is sugar. There are no good forms of salt and no good forms of sugar. Salt from a mine and salt from the sea both have the same harmful effect; white sugar, natural brown sugar, honey, molasses, corn syrup, maple syrup, whatever sweet have you. All are sugars and all have the similar harmful effects. I know of no harmless salt substitute that really tastes salty. Nutrisweet is basically harmless to most people and can be used as a very satisfactory replacement for sugars. (A few people are unable to tolerate nutrisweet, causing the anti-chemicalists to circulate much anti-nutrisweet propaganda, but you should carefully consider this thought before dismissing nutrisweet--there is almost no food substance that some people are not allergic to or unable to digest. The fact that nutrisweet is made in a chemical vat and the fact that some cannot handle nutrisweet does not make it "of the devil."
And its not all black and white with the other items either. Sea salt does have certain redeeming qualities not found in mined salt and under certain very special conditions, eating small quantities of salt may be acceptable. Similarly, some forms of sugar are not quite as harmful as other forms, though all are harmful.
The primary health problem caused by table salt is not that it contributes to high blood pressure in people with poor kidneys, though it does that. It is not that eating salt ruins the kidneys; salt probably does not do that. The real problem with salt is that sodium chloride is an adrenal stimulant, triggering the release of adrenal hormones, especially natural steroids that resist inflammation. When these hormones are at high levels in the blood, the person often feels very good, has a sense of well-being. Thus salt is a drug! And like many drugs of its type, salt is a habituating drug. However, we are so used to whipping our adrenals with salt that we don't notice it. What we do notice is that we think we like the taste of salted food and consider that food tastes flat without it. But take away a person's salt shaker and they become very uncomfortable. That's because the addict isn't getting their regular dose.