Research Question:
Drinking tea lowers the chances of getting bladder cancer?

Study Design:
This overview article 18 contained 6 cohort studies and case-control studies until March 2012. There was no heterogeneity in the subgroup-analyses and there was also no publication bias. The highest tea consumption was higher than 4 cups a day.

• Under fruit means all sugary edible fruits that can be eaten raw. Vegetable can be defined as all other edible parts of plants.
• Vegetables and fruit make an important contribution to the supply of vitamin B and C, carotenoids, such as beta-carotene and lutein, minerals, such as magnesium, dietary fiber and flavonoids.
• Fruits and vegetables contain unlike animal products, no cholesterol and low in calories because they mainly of water exist.

Research Question:
Eating fruits and vegetables lowers the chances of getting diabetes type 2?

Study Design:
This overview article contained 10 prospective cohort studies with 434342 participants and 24013 people with diabetes type 2. The mean follow-up duration was 11 years (4.6-23 years).

There was no publication bias.

Research Question:
Eating plenty of fruits and vegetables daily reduces the risk of all-cause mortality?

Study Design:
This overview article contained 16 prospective cohort studies with 56423 dead (11512 died from heart disease and 16817 died of cancer) under 833234 participants. The follow-up duration varied between 4.6 and 26 years.

All studies had corrected for age.
There was heterogeneity between the studies but no publication bias.

Research Question:
The relationship between fruit intake and getting diabetes type 2 is inconsistent and therefore carried out this review article.

Eating fruit reduces the chances of getting diabetes type 2?

Study Design:
This overview article contained 9 prospective studies with participants whose 27940 403259 people with diabetes type 2.

Research Question:
Eating fruits and vegetables lowers the chances of getting colon cancer?

Study Design:
This overview article contained 19 cohort studies with 1.5-1.7 million participants, including 11,800-16,000 cases with colon cancer. As a result, there was a statistical power to find a moderate and weak Association.  There was minimal evidence of heterogeneity between the studies but there was no evidence of small study bias.

Research Question:
Although many studies the relationship between diet and the risk of getting inflammatory bowel disease or "Inflammatory Bowel Disease" (IBD) examined, there is no systematic overview article known. It was therefore carried out this review article.

Is there a relationship between diet and getting an inflammatory bowel disease?