If you’re concerned about foods that raise your blood pressure, in the study, “Sugar-induced blood pressure elevations over the lifespan of three substrains of Wistar rats,” published in the Journal of the American College of Nutrition, February1998, researchers found that high dietary sucrose (sugar) can chronically increase the systolic blood pressure (SBP) in three substrains of Wistar rats. Increased concentrations of circulating insulin were found in Wistar Kyoto rats (WKY) and Munich Wistar rats (WAM) suggesting that the glucose/insulin system was involved, at least in these two substrains, in the maintenance of high systolic blood pressure (SBP) levels during chronic, heavy sugar ingestion.
Which raises your blood pressure more, too much sugar or too much salt in your daily diet? You have the issue of too much salt in commercial breads and other processed foods, and added sugars, syrups and sweeteners in other foods and beverages. There’s also the issue of too many fats added to foods, and other ingredients that increase shelf life. What are these additives to cleaned food that comes directly from nature doing to your health?
Since the majority of studies concerned with sugar-induced blood pressure elevation have principally been short-term, the 1998 investigation, “Sugar-induced blood pressure elevations over the lifespan of three substrains of Wistar rats,” followed the effects of heavy sucrose ingestion on systolic blood pressure (SBP) and related parameters over the lifespan of three substrains of Wistar rats.
In the study, according to its abstract, all substrains showed the highest systolic blood pressure when ingesting the two diets highest in sucrose. The highest sugar-induced systolic blood pressure (SBP) elevation, which remained over the lifespan of all substrains, was found in spontaneously hypertensive rats (SHR). Wistar Kyoto rats (WKY) had an intermediate elevation. WAM showed the lowest responses, although the average elevation of 6-8 mm Hg was statistically significant.
The following parameters could not be correlated with long-term elevation of systolic blood pressure (SBP); body weight, catecholamine excretion, renal function, and plasma renin activity, the study’s abstract explains. Only insulin concentrations correlated: insulin concentrations were consistently higher in the two groups of Wistar Kyoto rats (WKY) and Munich Wistar rats (WAM) consuming the high sucrose diets.
You also may wish to see the article, “15 Terrible Things That Happen If You Eat Too Much Sugar.” Or you might wish to look at the abstract of an older study, “Effects of diets containing different proportions of macronutrients on longevity of normotensive Wistar rats.” The question is whether rats and people have the same responses to excesses of certain foods or nutrients. Mice and humans share 97.5% of their working DNA, according to the article, “Just 2.5% of DNA turns mice into men – New Scientist.”