Researchers in the United States have identified potential health risks associated with using a smartphone while on the toilet, particularly linking it to a higher risk of developing hemorrhoids. A study published in the journal Plos One at the end of 2025 by a team from the Beth Israel Deaconess Medical Center found that two-thirds of 125 patients who underwent a colonoscopy reported using their phones on the toilet at least once a week. These individuals were found to have a 46% higher risk of hemorrhoids compared to those who kept their devices away. The study suggests that the main concern is the extended time spent sitting, which can increase pressure on the veins in the anal region, leading to blood stagnation and swelling of the hemorrhoidal cushions. The researchers noted that the oval shape of a typical toilet seat keeps the rectum in a low position, further contributing to this issue. Social media algorithms, which are designed to keep users engaged, may cause individuals to lose track of time, leading to longer periods of sitting. This extended time can also result in an unnatural angle for the legs, potentially compressing blood vessels and the sciatic nerve, causing numbness and tingling in the legs, a condition sometimes called "sleepy legs." Additionally, the habit of sitting too long on the toilet can weaken the pelvic floor muscles, increasing the risk of urinary incontinence over time. To mitigate these risks, the study authors recommend that toilet sessions should not exceed five minutes. If a bowel movement does not occur quickly, it is advised to get up and try again later rather than forcing the process. The study also pointed out that toilets can contain many invisible particles that become airborne when the toilet is flushed. Smartphones, which are often handled and are warm, can become a breeding ground for bacteria such as Escherichia coli, which is commonly found in feces. This increases the risk of spreading germs if the phone is touched after leaving the toilet. To reduce the risk of infection, the researchers suggest cleaning the smartphone after using the toilet or ideally leaving it outside before entering. They emphasized that washing hands before leaving the toilet is ineffective if a person subsequently touches their contaminated smartphone. This study highlights the importance of being mindful of both posture and hygiene practices in everyday routines to prevent long-term health issues.