Red Tennis Balls...

That's a phrase (about conventional tomatoes) from a book I just read, The End of Food.

Taking statistics from the USDA comparing a tomato in 1963 to a tomato now shows that 100 grams of 'fresh' tomato has:

30.7% LESS Vitamin A
16.9% LESS Vitamin C
61.5% LESS Calcium
11.1% LESS Phosphorus
9% LESS Potassium
9% LESS Niacin (B3)
10% LESS Iron
1% LESS Thiamine (B1)
65% MORE Lipids (fats)
200% MORE Sodium
Vitamins E and K are not measured, nor are essential micronutrients like molybdenum and selenium.

Broccoli has lost 45% Vitamin C.

80% of the tomatoes grown in Florida now comprise only 5 varieties, and one of those 5 counts for 35.9% by itself (the variety is Fla. 47).

In 50 years, the Canadian potato has lost 100% Vitamin A, 57% Calcium, 50% Iron, 50% Riboflavin (B2) and 18% Thiamin.

So, its not just Red Tennis Balls that are nutritionally deficient...