What is nutrition

I have studied nutrition for so many years. I have read a lot of books and related lectures. There is no complete interpretation of the concept of nutrition, including those doctors, nutritionists, experts, etc., to explain the concept of nutrition in one sentence, it is indeed not an easy thing, because the range of nutrition is too wide.

So what is nutrition? According to my years of study and understanding, in a narrow sense, it refers to the basic conditions that people rely on for survival, such as sunlight, air, water, and food, and more of them refer to food. The intake of food, that is, the "materials" that people consume from food every day are beneficial to the structure of the human body and obtain basic health. These materials are the seven nutrients classified by posterity, namely protein, fat, carbohydrate, water, Vitamins, minerals, and fiber. Therefore, nutrition is both nutrients.

In a broad interpretation, in addition to the nutrients needed by the human body, nutrition is also the culture, education, accomplishment, and qualities that people should have in ideology, which are manifested in the good psychological attitudes of coping with and adapting to the society. And the concept of life. So my understanding, on the whole, nutrition is life. Today, only in a narrow sense, give the correct explanation for nutrition.

First, the smallest unit that constitutes all living organisms in nature is called a cell.

The connections between cells and cells constitute tissues, the connections between tissues and tissues constitute organs, and the connections between organs and organs constitute living bodies. We, humans, are no exception. The composition of cells is precisely constructed by the seven nutrients we consume from food every day. Therefore, nutrition refers to the raw materials necessary for life. What we can see, what we can't see, what we can touch, what we can't touch, are all constructed from the nutrients in food.

Secondly, nutrition refers to the elements needed for information transmission in the body's physiological response. People have their own emotions and are easily infected by the joys, sorrows, sorrows, and joys that happen around them. For example, when you see those moving plots on TV, you will subconsciously cry; when you attend a funeral, you will feel involuntary.

Sad, when you see your favorite star score a goal, you will definitely be very excited. Wait, all these information transmission processes need to be supported by nutrients in the body. Of course, the nutrients stored in the body are also a kind of Consumption.

Furthermore, nutrition refers to the nutrient elements required by all physiological activities of the human body. The nature of people’s work is different, which determines the difference in their energy consumption. The daily nutrition required for physical and mental work is completely different.

The nutrition required for teachers standing lectures and sitting in the park is also different, athletes The daily physiological activities must be far greater than ordinary people. Of course, the standard of nutrients needed will be higher than ordinary people. Therefore, every individual actually needs different nutrients every day.

Finally, nutrient requirements must change with changes in physiological activities. Changes in work patterns, changes in emotions, changes in age, and changes in weather all require changes in people’s nutrient requirements. Only by giving corresponding changes in diet during the changes can it be possible to satisfy people under different physiological changes. Health needs. It is hard to imagine that three generations of a family eat together every day, but they always eat the same food. What kind of health results will the result be?

This is the explanation of nutrition. It requires people to have a correct understanding of the materials needed to build a healthy body and understand the importance of a correct diet. Nutrients, as a gift from nature, our god-like body has experienced billions of years of evolution and evolution and has made the truest interpretation of nature. We must keep a grateful heart and learn correct nutrition knowledge. , Carefully maintain our body, so that we get health.

Therefore, learning nutrition is something we must strive to achieve in our life. Friends, come on, we grow up together.

Facts and Myths About Nutrition

The six nutritional myths have pitted you for a long time! Nutritionists uncover the truth

Julie Upton, a nutritionist at the American Institute of Food and Health Food, has revealed the truth about nutritional myths to netizens, which may make your weight loss efforts in vain and harm your health.

Myth 1: You need to use the juice to detoxify your body.

Fact: From celebrities to personal trainers, there are so-called experts who advocate fasting or juice detoxification. If you search for "detox", you will get nearly 64 million diet plans and treatment results to help you "clear the system", "remove toxic substances from the body", "give your gastrointestinal tract rest" or "speed up metabolism" and " Enhance your overall health". But there is little evidence to show that these effects can be achieved after fasting or abstaining from food for a few days.

Although occasional fasting or a one-day "juice diet" will not harm most healthy people, it may make you feel irritable and hungry. If you really want to do your best, eat a healthy meal, including plenty of fruits and vegetables, adequate sleep, and don't drink more than one alcoholic beverage a day.

Myth 2: Weight loss soda can make you fat.

Fact: Although you may have read that drinks make you gain weight, a recent clinical trial is just the opposite. In a 12-week study published in the Journal of Obesity, dieters who drank weight-loss beverages lost an average of 13 pounds, which was an average of nine pounds and 44% more than the average weight of subjects drinking water. More importantly, drinking carbonated beverages reported feeling more satisfied. This study shows that weight loss drinks containing low-calorie sweeteners do not hinder weight loss and can actually work.

In 2012 and 2013, researchers at the University of North Carolina published two peer-reviewed studies in the American Journal of Clinical Nutrition, randomly assigning subjects to drink water or diet (without changing their eating habits). After six months, compared with the control group, the diet and beverage group were more likely to achieve a meaningful weight loss-five percent of their body weight. These studies emphasize that if you want to lose weight, weight loss drinks can help you lose weight because they can help you achieve and maintain a low-calorie diet plan.

Myth 3: Sea salt has less salt than sodium salt and is rich in minerals.

Fact: The sodium content of Morton's table salt and Himalayan sea salt is basically equivalent to 2,300 mg per teaspoon. As for minerals, neither contains any minerals nor is it sufficient to make it a winner of other minerals. For example, a teaspoon of table salt contains only 1 mg of calcium, while the magnesium content in sea salt is only 12 mg. Because 12 mg is only one percent of your daily needs, getting calcium in your diet is not a very healthy way.

Most people think that sea salt tastes better. In some cases, you can use less salt (thus reducing your sodium intake), but it is by no means a low-sodium and mineral-rich option. Remember, sea salt lacks iodine-not getting enough of this compound can cause goiter, mental retardation, growth retardation, etc. In fact, according to researchers at Boston University, iodine deficiency is a serious health threat, especially for pregnant women, so do not use sea salt in your diet.

Myth 4: Some foods, such as celery, have negative calories.

Fact: When something sounds too good to be true, it may not be true. Take "negative calorie food" as an example. The idea is that digesting certain foods provides more calories than those foods. The false logic of this legend is based on the scientifically proven food thermal effect (TEF), which simply means that the body consumes the energy of food. Think about it, if you are going to eat very low-calorie foods-common examples include celery, apples, and limes-then you will actually have a calorie deficit. In other words, the cost of these foods will be less than zero calories. Unfortunately, there are no negative-calorie foods. The calories in food are usually between 10% and 20%. So one celery stalk has seven calories. Even if you assume a TEF of 20%, that means you have five and a half calories left.

Myth 5: It takes 21 days to break the habit of breaking (or form a new habit).

Fact: Popular masters and many diet plans claim that it takes 21 days to develop a new healthy habit-or break a bad habit. In fact, there is no magic time frame for breaking the habit of breaking.

A study evaluating behavior changes found that it takes an average of 66 days to develop a new habit, such as eating a piece of fruit a day. This change may actually be possible from 18 days to 254 days. Researchers have found that adaptation time is a function of how much new behavior is related to individual behavior. If you are trying something new, such as daily exercise, then give yourself some time to make it a routine. It may not happen overnight, or even within 21 days!

Myth 6: Muscle can become fat (...and vice versa).

Fact: You often hear someone in the gym say: "Because I was injured, my muscles became mushy." But this is not the case, because muscle and fat tissue are completely different, so they never change from one to the other. This is equivalent to saying that you can turn water into wine, or turn gold into gold.

When you stop exercising, your muscle mass drops. When you are not exercising and the calories you consume exceed the calories you burn, it is much easier to get fat tissue. Similarly, when you exercise, you will increase lean tissue and begin to burn excess fat, but your fat has not turned into muscle.