On the 11th, god member Park Joon-hyung appeared on singer DinDin's YouTube channel and revealed that he developed arrhythmia due to vitamin overdose.

When DinDin asked about his health, Park shared his experience of being diagnosed with arrhythmia during the COVID-19 pandemic. "Back then, I was walking up a hill wearing a backpack, and I felt short of breath and my arms went numb. I thought I was having a heart attack, so I went to a heart hospital, and they told me I had developed arrhythmia," he said.
He further revealed that excessive Vitamin D3 intake was the cause. He disclosed his extreme dosage, stating, "During COVID-19, Julien Kang told me, 'You have to take a lot of Vitamin D3. Take five 1,000IU doses a day.' Thinking I should take even more, I ended up taking 15,000IU a day."
He continued, "When I was getting blood tests related to my heart, the doctor asked, 'Do you drink a lot of milk?' When I told him I was taking 15,000IU of Vitamin D3, he said my levels were 10 times higher than an average person."
Admitting his mistake, he added, "They told me that taking that much causes calcium metabolism to become abnormal. I took it like that for a year, and it ruined my body." DinDin reacted by squinting his eyes and saying, "You have to take it in moderation; who takes it like that?"