Researchers from the University of Florida, Brigham and Women’s Hospital and Harvard Medical School, and the Nutritional Science Research Institute, Boston, supplemented 52 healthy men and 72 healthy women with a daily supplement of 200mg of Green Tea Extract supplying 160 mg of green tea polyphenols and 90mg of EGCG, along with 100mg of L-Theanine (Suntheanine) or placebo for three weeks. At the end of the supplementation period the researchers found that total cholesterol had dropped by 10 mg/dL and LDL-cholesterol dropped by 9 mg/dL. Systolic blood pressure dropped by 5 mmHg and diastolic blood pressure dropped 4 mmHg following daily supplementation with Green Tea Extract and L-Theanine.

Researchers from the University of Texas Southwestern Medical Center and the Dallas VA Medical Center analyzed data on 3,300 participants in the Dallas Heart Study. The researchers found that if the level of potassium in the urine was low blood pressure rose. In fact as the level of potassium dropped in the urine, blood pressure climbed  higher and higher.

Vitamin D deficiency is associated with heart dysfunction, sudden cardiac death, and death due to heart failure, German researchers from the University of Heidelberg report. An association between vitamin D deficiency and heart trouble is plausible, the researchers note; vitamin D is known to affect contractility of the heart. The scientists assessed vitamin D levels in 3,299 patients who were referred for coronary angiography - a test used to look for clogged heart arteries before 2000.

High blood pressure is often related to lifestyle and a change of diet can be an effective tool for managing it. Researchers conducted a randomized, double-blind, placebo-controlled trial to evaluate the efficacy of treatment with an oral Nigella sativa seed Extract, also known as Black Seed, supplement in patients with mild high blood pressure. Subjects were randomized into three groups: a placebo and two test groups that received 100 or 200 mg of NS extract twice a day.

Lycopene is a potent antioxidant found in tomatoes giving them their red color. It could ease the pain of endometriosis. In addition, it could help treat fibroids and scars caused by surgery.