【推荐1】To lose weight, you don't need to suppress your appetite. Eat often but eat healthily, and you will make it.

    1       they often skip mealtimes to avoid any more calories for the day. This, however, is an extremely counterproductive （适得其反的）action. Your body's metabolism can become confused when you do not eat meals on a regular basis.     2    , your body thinks that it needs to store energy away for later. This is a simple survival mechanism that ensures you do not starve to death in an emergency situation. It can also result in fat retention （脂肪沉积）.So even if you do not have time for an entire meal, it can help to have some nuts, a boiled eggs, or some raw vegetables.

Eating more often is also a great way to keep your blood sugar from crashing throughout the day.     3     You may want to take a hint from the eating habits of toddlers. Toddlers are known for their consistent snacking. They often refuse to eat an entire meal, yet, graze （吃零食）throughout the day.

Grazing can help you avoid a hungry feeling, and helps to keep your blood sugar stable.     4     It can be difficult , at first, to tell when you are truly hungry, or just eating out of habit. Many individuals eat for comfort, or out of boredom. Part of losing weight is learning to listen to your body. Eat healthy snacks or small meals throughout the day.     5     .

【推荐3】A new report connects eating eggs to an increased risk of heart disease. The results follow several earlier studies that found eating eggs was generally healthy. The study collects data from six other earlier studies. It shows a 6 percent increased risk of heart disease when the number of eggs a person ate each day increased by half an egg.

Norrina Allen, an associate professor at Northwestern University said that, in the United States, eggs are generally one of the top sources of cholesterol(胆固醇)in a person’s daily food. People with higher levels of cholesterol in their food are at increased risk of the development of heart disease later in life. However, Allen added that she would not say that eggs are completely unhealthy. “I’m not saying that people should take them completely out of their food,” she said. “I’m just suggesting that people eat them in a proper amount.”

Some experts believe the new study does not prove that eggs are causing heart disease. “Cholesterol’s role in the development of heart disease has been discussed for more than 30 years,” said Bruemmer, an associate professor of medicine at the University of Pittsburgh Medical Center. “This study does have clear shortcomings, including self-reporting at a single time point,” he added.

Bruemmer said, “Eggs in moderation(适度)are probably acceptable from a nutritional standpoint.” “Moderation,” he added, “is less than one egg a day, including eggs in foods such as bread”.

Holly Andersen, a doctor at the NewYork-Presbyterian/Weill Cornell Medical Center, agrees that the study has “real shortcomings”. One problem Andersen has with the study is that a lot of the egg-eating people in the study also appeared to be eating much meat and processed meat. “If you’re taking a lot of processed meat, it doesn’t matter how many eggs you’re eating,” Andersen said.

Also, Andersen said, “The study can only show there is a relation between eggs eating and heart disease. But it cannot prove eggs are the cause of the disease. It may just be that people eating a lot of eggs are also taking a lot of bacon.”

【推荐1】Sorry,potato people!Although it’s probably no surprise that French fries are among the worst foods you can eat,most of us still don’t believe it.After all，it doesn’t hurt to eat some every once in a while…right?But some people feel guilty(内疚的）to eat French fries and they have a good reason for that.

According to a study published in the American Journal of Clinical Nutrition,people’s guilty feeling may be well-placed.The research,which researched potato eating in 4,400 older people between ages of 45 and 79 over the course of eight years,shows that eating fried potatoes at least twice a week highly increases our risk of death.

But hold up!Before you completely stop eating potatoes,you should know that it is found that eating potatoes overall(even a lot of them)wouldn’t kill you.Instead,it’s the type of potato that makes all the difference between life and death.

Eating fried potatoes like French fries at least twice per week increased the risk of death in the study.On the other hand,potatoes that were not fried,such as boiled and baked potatoes,were less likely to cause death.

Why?Potatoes have healthy levels of fiber(纤维）and vitamins(维生素），so you can partake without feeling bad.But when it comes to the fried food,you might need to think again.French fries usually have lots of fat and added salt,leading to weight growth.Still,when all is said and done，connection isn’t totally equal to causation(因果关系）.More research is needed before certainly concluding that eating French fries alone increases the risk of death.

Luckily,potatoes are still considered as one of your suggested three to five servings of vegetables per day.Just try not to eat the fatty ones,if you can.

【推荐2】New molecules(分子) engineered by Weill Cornell Medicine researchers can enable rapid, direct “editing” of genes in a wide range of cell types, creating an series of research and therapeutic possibilities.

The molecules, known as base editors, can attach to a target DNA sequence and chemically alter a single DNA letter. Base editing technology, just two years old, developed from the better known CRISPR/Cas9 gene-editing technology. CRISPR/Cas9 molecules allow scientists to cut almost any piece of DNA in a cell and in this way disable or remove a gene. By contrast, a base editor molecule, using essentially the same DNA-targeting mechanism, chemically modifies a   gene rather than cutting it out.

Base editing is better suited for making or correcting single-base “point mutations(基因突变)” in DNA-the cause of many inherited diseases and cancers-and in principle involves less risk of having collateral impact on other normal DNA. However, first-generation base editors operate efficiently in relatively few cell types. Together, the team systematically re-engineered the principal existing set of base editors, known as BE3, BE4Gam and xBE3, to boost their production in cells—low production had been a problem in many cell types. The optimized editors, unlike the first generation version, work efficiently in a wide variety of cell types and model systems, including mouse and human cell lines, and even liver cells in live mice.

“These new base editors allow us to model and study diseases such as cancer in new ways, but they really have applications all the way across biomedical research,” said senior study author Dr. Lukas Dow, an assistant professor of biochemistry in medicine and a member of the Sandra and Edward Meyer Cancer Center at Weill Cornell Medicine，and a paid advisory board member for Mirimus, Inc., a company focused on genome(基因组) editing technologies to develop animal models.

The Weill Cornell Medicine scientists now plan to use the new editors for several research applications, including the investigation of mutations associated with cancers to find suitable targets for therapies. “There is a huge list of cancer-linked mutations whose precise roles in cancer are unknown, and now with these optimized tools we can study them affordably and in a feasible time frame,” Dr. Dow said.

The optimized editors are also being studied by researchers working on other applications, including potential therapies for genetic diseases.

【推荐3】Although its history can be somewhat traced back to ancient Korea, it is a true fact that Taekwondo as an organized art is relatively modern. In fact, the only recorded history begins in the mid 1900’s.

The actual beginnings of Taekwondo are not known to everyone, yet many historians believe it came from a Korean martial art from practiced over 1,300 years ago.

In the early 1900’s the art developed with the instruction of Chinese and Japanese techniques. Some Koreans were anxious because these influences did not prove the amazing kicking power of the art nor its traditional values or philosophy.

The actual name of Taekwondo wasn’t official until 1955. At that time Korean General Hong Hi Choi organized a movement to combine Korea’s various martial arts styles. He recommended the name “Taekwondo” to an organization specially founded to select a name for the new art. On April 11, 1955, Taekwondo was recognized as the name for the newly combined, officially recognized Korean martial art.

As an interesting side note, the word Taekwondo itself is made up of three Chinese/Korean words: Tae, meaning to kick or jump; Kwon, meaning fist or hand; and Do, which means “the way”. It can be thought of as “The Way of the Hand and Foot”.

In the 1960’s Taekwondo began to spread internationally and developed throughout the late 1900’s. It became a fighting sport, although self‒defense, fitness, and the philosophy of the practice are still main elements of Taekwondo.

Today, Taekwondo enjoys great popularity around the world. More than 20 million people practice Taekwondo in more than 120 countries. Taekwondo was also made an official sport in the 1988 Olympic Games in Seoul, Korea.

【推荐1】The COVID-19 pandemic has been a frequent topic of conversation for most of us over the past year. As we dreamt of indoor dining, vacations, and hugging our friends again, my friend Ana texted that her mother, living in Brazil, had been infected by the coronavirus. I won’t go into details here, but the disruption to life in Brazil have been especially upsetting considering their social and cultural norms (规范).

Ana is Brazilian, and I’m from the US. While living in New York City, we became fast friends despite the few awkward cultural differences I learned to deal with. She was comfortable with intimacy; I preferred to keep my distance. She liked the company of many; I liked the friendship of few. It was awkward for me to lean in for a quick hug, only to be embraced then kissed on the cheeks. To this day, I’m not an excellent cheek kisser, but I try. She is one of many people over the years who have educated me, in a way, about delighting in cultural difference.

I called Ana to check on her mother and I was primarily curious about how social and cultural norms have been affected. It’s difficult, said Ana, because the necessary health regulations are opposite to “what we believe and everything we know about living in a community and displaying feelings of love”, but she hasn’t given up hope. I asked if the shifts made during the pandemic will change cultural norms. “Absolutely not,” said Ana. This is who Brazilians are in nature and change doesn’t happen overnight. They spend a lot of time and energy investing in relationships, and the deeply rooted social conventions won’t change quickly.

Over the years, Ana has shared many stories that emphasize the differences in our upbringing. I delight in our differences, even if kissing on the cheek makes me uncomfortable. We find our commonalities, like talking with our hands, being expressive, and valuing community. And we learn from our differences. COVID disrupted many things, but through all of this, Ana said, we must constantly be adjusting, understanding, and doing what’s best for our communities and the people we love.

【推荐3】Few Americans remain in one position or one place for a lifetime. They move from town to city to suburb, from high school to college in a different state, from a job in one region to a better job elsewhere, from the home where they raise their children to the home where they plan to live in retirement (退休). With each move they are forever making new friends, who become part of their new life at that time.

For many of them summer is a special time for forming new friendships. Today millions of Americans vacation abroad, and they go not only to see new sights but also with the hope of meeting new people. No one really expects a vacation trip to produce a close friend, but the beginning of a friendship is possible.

The word “friend ” can be applied to a wide range of relationships - to someone one has known for a few weeks in a new place, to a fellow worker, to a childhood playmate, to a man or woman, to a trusted confidant (知己).