“…A qualitative food frequency questionnaire (FFQ) for specific food groups/items was also used. The FFQ included foods with plausible effects on PMS as reported by Cheng et al (2013) [22], and other published research [26,27,28,29,30,31,32,33,34,35,36,37,38,39]. These included: starchy foods (e.g., bread, rice, pasta, pastries), milk and dairy products, caffeinated beverages (e.g., coffee, tea, energy drinks), leafy green vegetables (e.g., parsley, coriander, spinach, collard, Swiss chard), cruciferous vegetables (e.g., broccoli, cabbage, cauliflower, Brussels sprouts), other non-starchy vegetables (e.g., tomato, cucumber, bell peppers, green beans), fruit (e.g., bananas, apples, citrus fruit, melons, grapes), animal foods (e.g., red meats, poultry, fish, shrimp), herbal teas (e.g., cinnamon, black and green tea, sage, peppermint, thyme, ginger, chamomile) and high calorie/fat/sugar/salt foods that contribute high calories but have little nutritional value, e.g., high fat, sugar, and/or salt foods, fried foods, high-fat dairy products, eggs, refined grains, potatoes, corn and high-fructose corn syrup, and high-sugar drinks).…”