The antioxidants and other compounds found in fruits and vegetables help protect your heart's health, according to a study published in the medical journal "Platelets" in 2004. Avocados and kiwi are two fruits in particular that have been found to lower triglyceride levels. Triglycerides are fats that are stored when you don't burn as many calories as you consume. In addition to eating more fruits and vegetables, burning more calories by exercising will also lower your triglyceride levels.
In a study published in "Plant Foods for Human Nutrition" in 2014, high cholesterol levels were induced in rats. When their diet was supplemented with reduced-calorie avocado paste, the rats showed a 33 percent decrease in their triglyceride levels. The researchers attributed the results to the avocado's polyphenol, carotenoid and chlorophyll content, which counteract oxidative stress in the body and reduce fat storage in the body's cells.
The purpose of the 2004 study published in "Platelets" was to note the effect of kiwi on fat levels in humans. Researchers had volunteers eat two or three kiwis every day for 28 days. Compared with the control group, kiwi consumers' triglyceride levels decreased by 15 percent. Researchers ascribed kiwi's high content of vitamins C and E and polyphenols to this triglyceride-lowering effect and claimed that eating more kiwi can help in the fight against heart disease.