Fibre is a key part of a healthy diet.Heath Canada recommends 25 grams of fibre per day for women and 38 for men.Although it's safe to say most people could include more fibre in their diet,a research review shows there's an ideal amount for gaining health benefits.
The World Health Organization（WHO）analyzed some research to help develop new dietary guidelines for fibre.The study,also looks at which types of foods prevent weight gain and protect against chronic （慢性病） diseases.The researchers looked at 185 studies and 58 clinical trials conducted over 40 years.They found 25 to 29 grams of fibre is ideal for health benefits.
The WHO research found that people eating the most fibre are 15 to 30 percent less likely to die earlier from any cause in comparison to those consuming less fibre.Similarly,people who eat fiber-rich foods are 16 to 24 percent less likely to suffer some diseases like coronary heart disease,stroke,type 2 diabetes,and colon cancer.
"So while you should probably be eating more fibre,the next challenge for the public is finding ways to do so," Dr.Okeke-Igokwe says.Not everyone is aware of the best options（选择）.Fibre functions differently.Some fibre in foods like nuts,seeds,beans,and some fruits and Vegetables help slow digestion.Other fire in foods such as wheat bran（麦麸），vegetables and whole grains helps food pass through your system more quickly.
The more processing a food has,the less fibre it typically has,according to the Academy of Nutrition and Dietetics.It's something to keep in mind to help reach your fibre goals.The Academy's other suggestions for hitting your daily fibre intake include changing over-processed grains for steel cut oats（燕麦）or replacing white rice with brown or whole grain options.You can also add to your diet as well as make substitutions.Luckily,you can find fibre in other various food combinations,too.



What is the WHO report mainly about？ ______

A. How people prevent diseases.
B. How much fibre you should eat daily.
C. The differences between men and women.
D. The significance of fibre in a healthy diet.

Where can you find the data that best supports "Fibre is necessary for health"？ ______

A. In Paragraph 1.
B. In Paragraph 2.
C. In Paragraph 3.
D. In Paragraph 4.

What is important in taking fibre according to Dr.Okeke-Igokwe？ ______

A. Eating more fibre.
B. Taking your time in eating.
C. Eating vegetables quickly.
D. Choosing proper foods.

Why does the author suggest changing over-processed grains？ ______

A. They contain less fibre.
B. They are less tasty.
C. They are easy to digest.
D. They have too much energy.