I came across an online article about "The risk of Colorectal Cancer" and would like to share some of interesting points here. Cancer has been positioned near the top of the cause of death in Japan. The colorectal cancer is famous that the risk is getting higher over the age of 40. Nowadays, it is said that young people in between their 20s and 30s who develop it increase drastically. In case of the colorectal cancer, there are many cases with no symptoms at an early stage. When it progresses on some level, you have blood in your stool, stomachache and abnormal bowel movement. There are some cases that losing weight and anemia appear. That's why a stool test is very important in medical health check to detect the colorectal cancer early. If you need further investigation in your health check, having a colonoscopy is vital. Especially, having a colonoscopy is highly recommended even though you don't see any symptoms on the horizon when you are over 40. The most worried symptom is blood in the stool, but some people make an assumption that is hemorrhoids and see how it goes. When you are bleeding, it is okay if it is cured. However, you must go see a doctor immediately when you are bleeding many repeatedly. You also should go to a hospital soon if you have stomach ache before bowel movement when you feel bloated and constipation. Actually, the doctor told me to need a detailed examination from the result of my stool test when I had an annual heath check this year. Honestly, I was so scared what if I have a colon cancer. Luckily, from my colonoscopy result, I have no issue with my colon. I just became a grandfather this month and hope to see my grandchild becomes an adult if possible.

I came across an online article about "the International Space Station(ISS) deterioration" and would like to share some of interesting points here. The first module was launched in 1998, so the ISS is well over 28 years old at this point. It is the biggest space construction in human history that NASA, JAXA, ESA, Roscosmos and CSA have joined. It plans to shut down operations in January, 2030 and drop into Pacific Ocean. The biggest problem in the deterioration is a crack on the service module. It reported "air leak" in 2019 and the leak increased in 2021. NASA and Roscosmos dealt with it by filling those leaks with resin, but they still haven't found solutions. On top of that, other tiny cracks have been found in 2022 to 2024 and seem impossible to fix completely. The solar battery arrays, which provide ISS with power, has been running much longer the original designed lifespan. The output efficiency dropped by 60 to 70% compared to the design. NASA installed the new "Roll-Out Solar Arrays(iROSA) to increase power generation ability of about 20 kilo watt, but this is just a quick fix. The ISS also has many other issue with thermal insulation, plumbing and so on. As for the successor model for ISS, NASA won't construct or have it on their own in the future. Instead, they pivoted to purchasing service provided as one of customers for orbit platform run by private companies. Private providers take care of design, construction, launch and operation for space station. NASA will join the system that buy astronaut's stay time, research and technology verification service. In my opinion, various cost also can go down as those kind of private companies such as space-X increase. That's why I expect people go on a space trip with affordable price one day.