Research Question:
Diets that contain foods that are rich in inorganic nitrate, are associated with low blood pressure. However, the evidence for the blood pressure lowering effects of inorganic nitrate and beet in randomized clinical trials is not systematically examined. It was therefore carried out this review article.

Research Question:
Epidemiological studies have the possible association between the consumption of tomato products and stomach cancer examined, but the relationship between eating tomato products and the risk of getting stomach cancer is controversial. It was therefore carried out this review article.

Eating tomatoes lowers the chances of getting stomach cancer?

Research Question:
The anticancer effects of legumes are extensively studied, but evidence from epidemiological studies on colorectal adenoma (precursor to colon cancer) is contradictory. It was therefore carried out this review article.

Eating legumes lowers the chances of getting colorectal adenoma?

Research Question:
Eating legumes lowers cholesterol levels?

Study Design:
This overview article contained 26 RCTs (n = 1037). The average age was 51.1 years and the average follow-up period was 6 weeks. The average fiber intake in the intervention group was 26 grams.

Research Question:
Eating mushrooms lowers the chance of getting breast cancer?

Study Design:
This overview article contained 8 case-control studies (2313 cases and 2387 controls) and 2 cohort studies (4577 cases and 1748623 persons years).

There was no question of publication bias.

Research Question:
Previous studies into the relationship between eating carrots and let the risk of getting prostate cancer see inconsistent results. It was therefore carried out this review article.

Eating carrots lowers the chances of getting prostate cancer?

• Dietary fiber, also called "ballast substances", is a collection of substances not be digested in the small intestine. They come so unchanged in the colon where they exert positive effects on the body.  
• Dietary fiber or fibers are chemically carbohydrates that give firmness to plants.
• Dietary fiber do not occur in animal products.

Study Design:
This overview article contained 15 articles with 673 participants.

Study Design:
This overview article contained cohort studies.

Results and conclusions:
The researchers found that eating lots of fiber compared to little, the chances of dying from heart disease significantly with 23% [HR = 0.77, 95% CI = 0.72-0.81] reduced.

• The soybean is originally from the far East.
• There are about 1000 different types of soy beans.
• One hectare soybeans delivers such a 544 litres of diesel on.
• Soybeans have the highest isoflavonengehalte of all products can be found in nature.
• Soybeans contain 30-50% protein, 13-25% fat and 14-25% carbohydrates.