A 22-Year-Old's Snack Diet Led to Restless Legs Syndrome
A Nanjing graduate student kept being woken by her own twitching legs, and doctors traced the cause to years of surviving on snacks instead of meals — a warning that resonates with China's exam-squeezed young people.
A 22-year-old graduate student in Nanjing kept being startled awake by her own legs. Every night, as she drifted off, they would twitch and jerk, as if she were stepping into empty air. She assumed, reasonably, that she simply was not sleeping well.
When the young woman — identified in reporting by the pseudonym Xiao Yu — finally went to hospital, the bloodwork told a different story. Her iron, vitamin D, vitamin B12 and folic acid had all fallen well below normal range, and a doctor at the Second Affiliated Hospital of Nanjing Medical University diagnosed restless legs syndrome, a condition in which the legs feel uncomfortable at rest and improve only when moving.
The cause was hiding in her daily routine. Xiao Yu had been a picky eater since childhood, and four years in a university dormitory made it worse. She ate snacks instead of meals, skipped vegetables and meat, and stayed thin, in the idiomatic phrase, like a bamboo pole (瘦得像竹竿). While preparing for the postgraduate entrance exam, she barely exercised, spending her days indoors with textbooks and packaged food. The snacking filled her stomach but emptied her body.
Restless legs syndrome is a sensorimotor disorder of the nervous system, according to the hospital report, whose hallmark is discomfort that sets in at rest, eases with movement, and worsens at night — enough to wreck sleep and quality of life. Doctors classified Xiao Yu's case as typical secondary restless legs syndrome, driven by the deficiencies rather than by another illness, which meant the treatment was to refill what years of poor diet had drained. The four-part corrective plan began to work within a fortnight: the twitching at bedtime fell sharply and she could fall asleep again.
What made the case travel far beyond one hospital was the warning folded inside it. The posts that spread it were not really about a rare disease but about a familiar pattern among China's young people: the student who survives exam season on convenience-store snacks, the "bamboo-pole" thinness mistaken for good health, the body quietly running out of micronutrients while the scores improve. "Don't neglect diet when you're young," one widely shared post urged. "If you keep lying awake at night with legs that feel wrong for no reason, don't just tough it out — see a doctor."
The story resonates because it names a near-miss rather than a tragedy. Xiao Yu had just been accepted to graduate school — the most hopeful chapter of her life — and her legs were failing her only at night, invisible during the day. Restless legs syndrome is treatable, and hers responded quickly. The open question it leaves is not about one student's recovery, but about how many others are studying their way toward the same deficiency, mistaking thinness and busyness for being fine.