Blood pressure increases due to an imbalance of Vata and Kapha dosha which leads to a state of obstruction in the blood vessels due to an accumulation of toxins (bad cholesterol). Cashew improves the digestion system due to its Ushna (hot) property which helps in the removal of bad cholesterol from the body due to its Rechana (laxative) property. This clears any obstruction in the blood vessels resulting in normal blood flow. It also helps in increasing good cholesterol due to its Vata and Kapha balancing properties.