Research design: Individuals with physiological levels of NT-proBNP (40 - 90 pg/mL) and those with elevated levels (> 120 pg/mL) will be recruited to participate in a randomized crossover feeding study designed to treat patients with hypertension. A total of 8 participants, per group, will be exposed to two 10 days-phases of either a low sodium load (LS) of 50 mmol/day or a high sodium load (HS) of 250 mmol/day in random order and compare the blood pressure response to different sodium loads between the two NT-proBNP categories. Salt sensitivity is defined as a change in mean arterial blood pressure of ≥ 10% between the low and high sodium load. At the end of each phase, participants will be tested on a variety of anthropometric, blood and urinary measurements.