What is a cup of lettuce in DASH terms?

[Guest guest]

Okay...i am trying to get serious about dash, but what is a cup of lettuce? Is that about a 1/4 of an iceberg head, or are we talking a few loose leaves in a cup, or a packed cup? When I eat a salad, I use a large jethro bowl with probably 1/4 of a head or more. Does it matter? Is lettuce basically a free food?

===========================================================================45-Male-Caucasian, 5'9 " - 234lbs, PA Diagnosed 2007 Suspected Hyperplasia-No tumors on CT - No AVS.

Meds: 100mg Spiro, 40 MEQ Potassium, 1800mg Calcium,  500mg Magnesium, 100,000UI Vit D (weekly), 20mg OmeprazoleSide effects: Gynecomastia, stomach inflammationOther Diags: GERD, Hiatal Hernia, Metabolic Syndrome - PreDiabetic, Secondary Hyperparathyroidism caused by Renal calcium leak, Bone Cyct in left Femoral Head and Pelvis. Benign Lung Nodules, Fibromyalgia, Scarring on Right Kidney Lower Pole, Right Flank Pain

DASH: Started " sort of " DASHing 5/3/2011