If you are suffering from high blood pressure, fish, seafood, and most of the vegetarian diet can help reduce the symptoms of heart disease associated with hypertension, the study suggests.
Scientists from the Warsaw University of Medicine in Poland said that taking fish, seafood and vegetarian foods increases the level of a compound called trimethylamine N-oxide (TMAO), which contributes to some extent to heart health.
The study showed that low dose TMAO therapy reduced cardiac thickening (cardiac fibrosis) and cardiac failure markers in a hypertensive animal model.
"Our study provides new evidence of the potential beneficial effects of moderate increases in TMAO plasma over pressure-congested heart," said researchers.
Research published in the American Journal of Physiology – Cardiovascular Physiology, researchers analyzed the effects of TMAO on rats with a genetic tendency to develop high blood pressure.
One small group of hypertensive rats in the drinking water received small doses of TMAO, while another group received clean water.
They were given TMAO therapy either for 12 weeks or 56 weeks, and cardio-renal impairment and high blood pressure were evaluated.
The results showed that TMAO therapy did not affect the development of elevated blood pressure in any of the spontaneously hypertensive rats.
However, the state of the animals, considering the compound, was better than expected, even after prolonged TMAO treatment at low doses.
In addition, an increase in plasma TMAO from four to five do not have a negative effect on the circulatory system.
This is unlike the previous study, which found that TMAO's blood plasma and heart disease risk increased after red meat and egg consumption, researchers say.
"It seems that a rich and vegetarian diet is associated with significantly higher TMAO plasma than a red meat and egg-rich diet, which is considered to be a cardiovascular risk," said researchers.
"However, further studies are needed to evaluate the effects of TMAO and TMA on the circulatory system."