people in Asia have eaten rice for thousands of years and stayed lean. it has only been the past couple decades where the Chinese have gotten obese and that is due to their growing middle class and introduction of sugar and processed/fast food junk into their diets thanks to American companies setting up shop there
rice is perfectly fine to eat, just make sure you cook it correctly and don't use refined oils with it. rice from the local chinese restaurant won't be healthy, but cooking it at home yourself is fine