Nutritionists是什么意思？

However, some nutritionists advise against switching to a totally strict vegetarian diet.

What do some nutritionists say about the strict vegetarian diet

For years, nutritionists have recommended that pasta be kept to a minimum, to cut calories, prevent fat build-up and stop blood sugar shooting up.

Several noted nutritionists and research projects have concluded that this diet is one of the most healthful in the world in terms of preventing such illnesses as heart disease and cancer, and increasing life expectancy.