When subjects drank straight orange juice instead of the hesperidin solution, their blood flow was even better. In other words, the stroke-reducing effects of oranges extend beyond just the hesperidin.
When it comes to food, the whole is often greater than the sum of its parts.
The positive effects of citrus fruits on blood flow don’t require a machine to measure them. In one study, scientists recruited women who suffered from sensitivity to cold weather due to poor blood flow — women with chronically cold hands, feet and toes — and placed them in a highly air-conditioned room.