The debate over which is better, rice or flour, as the world's two most staple foods, has never ceased. What is the truth? Let's conduct a detailed analysis from various angles.
Which is more nutritious
Data from the "China Food Composition Table" shows that compared to rice of the same weight, flour (standard flour) has higher levels of most nutrients such as dietary fiber, vitamin B1, vitamin B2, vitamin E, calcium, potassium, magnesium, iron, and selenium. Among these, the content of dietary fiber, vitamin B1, vitamin E, and calcium is more than twice that of rice. In terms of zinc content, rice is slightly higher. In terms of protein, flour has a higher content than rice, but its quality is lower. That is to say, considering factors such as the proportion of essential amino acids, protein digestibility, and bioavailability, the protein in rice is more easily absorbed and utilized by the human body. Therefore, when considering both the quantity and utilization rate of protein, rice and flour are almost on par.
Overall, both rice and flour are finely processed staple foods that provide very few vitamins, minerals, and dietary fiber. To get more nutrition from staple foods, one should combine refined and coarse grains, replacing some of the refined rice and white flour with coarse grains like mung beans and oats.
Which is better for weight loss
From a caloric perspective, 100 grams of flour has 344 kcal, while the same weight of rice has 346 kcal, making them nearly equal. However, when made into staple foods, they undergo new changes: 100 grams of a steamed bun has 223 kcal, while rice has 116 kcal. Therefore, consuming the same weight of steamed buns and rice results in a higher calorie intake from the former. However, eating steamed buns provides more protein and dietary fiber, making you feel fuller for longer. It's hard to say definitively whether eating noodles or rice leads to less weight gain.
In fact, both steamed buns and rice have a low satiety index, which is not conducive to weight loss, and they have a high glycemic index, which is not good for blood sugar control. Diabetics should limit their intake. To control body weight and blood sugar, it is recommended to eat starchy beans like red beans, kidney beans, and mung beans frequently. They have a strong satiety effect, are digested slowly, and cause a gradual rise in blood sugar.
Which is better for the stomach
Refined rice and white flour are both quite easy to digest. If you have weak digestion, you can have congee, steamed buns, soft rice, or soft noodles as your staple food. For people with stomach ulcers, normal rice and flour staple foods are acceptable, as long as you chew slowly. For those with excessive stomach acid, alkali-added flour products are a better choice, as they help neutralize stomach acid.
Many people believe that congee and rice soaked in soup are good for the stomach. However, this view is somewhat one-sided, as drinking congee for a long period does not actually "nourish" the stomach. Because congee and rice soaked in soup are often swallowed without being chewed, they are not pre-digested by salivary amylase in saliva. Excessive water intake dilutes gastric juice and increases stomach volume, which can加重 the burden on the stomach to some extent. Moreover, long-term consumption of congee can easily lead to insufficient nutrient intake. Therefore, stomach patients should not have congee for every meal; they can have it once a day and also eat some appropriate grain products, chewing each mouthful 15-20 times, which also helps to nourish the stomach.
Which is safer
In terms of safety, both have certain risks. Data shows that in the diet of the northern population, the average aluminum intake is 4.6 times that of the southern population. This may be related to the northerners' love for wheat-based foods, mainly coming from leavening agents used in fermentation, which make food soft and fluffy. Although since 2014, some aluminum-containing additives have been banned from food processing and production, and no aluminum-containing food additives are allowed in puffed foods, some unscrupulous vendors still use them secretly. To reduce aluminum intake, it is advisable to eat less fried food like fried dough sticks and not to buy overly soft steamed buns or buns.
Eating only rice every day carries the risk of certain heavy metal超标, the most well-known of which are cadmium and arsenic, which is related to the growing environment of rice. Cadmium is very important in industries such as metallurgy, plastics, and electronics, and is often discharged into the environment through wastewater, then enters the food chain through irrigation, making rice a typical "victim crop." Compared to other grains, rice easily absorbs arsenic from soil and water and accumulates it. The most reliable way to avoid rice with excessive heavy metals is to purchase products with guaranteed quality.
In summary, there is not much difference between rice and flour. Eating only rice or flour every day poses certain food safety risks. The most important thing is to pay attention to variety in your staple food diet, alternate between rice and flour, and eat more whole grains and miscellaneous beans.