According to a study published in the 'European Journal of Epidemiology,' people who eat one cup of nitrate-rich vegetables per day may have lower blood pressure and a 12% to 26% lower risk of heart disease. 50,000 people took part in the 23-year study. Nitrate-rich vegetables include leafy greens such as chard, spinach, kale and arugula. Beetroot, celery, radishes, turnips, Chinese cabbage and parsley are also nitrate-rich. "Our results have shown that by simply eating one cup of raw (or half a cup of cooked) nitrate-rich vegetables each day, people may be able to significantly reduce their risk of cardiovascular disease." Catherine Bondonno, a lead author on the study, via MarketWatch. "The greatest reduction in risk was for peripheral artery disease, a type of heart disease characterized by the narrowing of blood vessels of the legs; however, we also found people had a lower risk of heart attacks, strokes and heart failure." Catherine Bondonno, a lead author on the study, via MarketWatch. If you find it difficult to eat enough leafy greens, Bondonno suggests putting them in a smoothie. "Blending leafy greens is fine, but don’t juice them. Juicing vegetables removes the pulp and fiber." Catherine Bondonno, a lead author on the study, via MarketWatch