Health Blog
Written by Dr. Heo Ji-young. Each piece takes a single symptom and follows what is actually happening in the body.
When no amount of sleep feels refreshing and your days are heavy
Why do I never feel refreshed, no matter how long I sleep? Sleep duration is not the same as reaching the deeper stages in which the body can recover.
When Your Eyelid Keeps Twitching and Fluttering
Why does my eyelid keep twitching? Sleep loss, stress, caffeine, and eye strain can make nerves more excitable, but spreading or persistent twitching needs care.
When You're Often Dizzy and Foggy-Headed but the Tests Are Normal
Why am I often dizzy and foggy-headed when brain and ear tests are normal? Over-breathing can lower carbon dioxide and constrict cerebral vessels, causing dizziness or tingling; weakness, slurred speech, severe headache, or fainting needs urgent care first.
If You Sigh and Yawn Often and Feel Short of Air
Why do I sigh and yawn often and need a deep breath to feel satisfied when heart–lung tests and oxygen levels are normal? Frequent deep breaths can lower carbon dioxide and create air hunger; breathlessness at rest or chest pain needs medical assessment first.
When you can't catch your breath but the tests are normal
Why can breathing feel difficult when heart–lung tests and oxygen levels are normal? Breathing more deeply or often than needed can lower carbon dioxide and cause dizziness, tingling, and palpitations; sudden or severe breathlessness or chest pain needs hospital care first.
When Seemingly Unrelated Symptoms Come Together
My legs swell, my head feels heavy, digestion is poor, sleep is shallow, and my shoulders are tight—could breathing be related? Shallow breathing is one factor to consider, not the only cause; heart, kidney, or thyroid problems need testing first.
When Your Feelings Swing and Your Body Swings With Them
When my mood swings and my body swings with it, am I unusual? Emotion and heart rate, digestion, and breathing can affect each other; low mood or loss of interest lasting weeks deserves appropriate care too.
When Your Throat Feels Tight and Swallowing Is Uncomfortable but Tests Are Normal
Your thyroid tests are normal, yet your throat feels stifled and your voice grows hoarse. In cases like this, I look not at hormones but at the nerves and pressure that pass through that spot.
Not Being Able to Fall Asleep Is Not the Same as Sleep Not Coming
Sleeping pills switch off consciousness. But sleep is not the switching off of consciousness — it is something that begins only when the body judges it is safe.
If Your Vision Goes Dark When You Stand — Before You Think Anaemia
Why does my vision go dark when I stand? It can happen when the body's response to blood shifting downward is delayed—a different mechanism from anaemia.
If You've Often Been Told It's All in Your Head
If every test is normal but symptoms continue, is it really all in your head? Normal results help rule out dangerous causes but do not mean nothing is wrong; needed tests come first, then timing and symptom patterns guide the next step.
When You Quit Coffee and It Still Pounds
Why does my heart still pound after I quit coffee? Caffeine can be a trigger, while sleep, tension, or digestion may be part of the underlying pattern.