Mochi is dangerous primarily because of its texture. The soft, stretchy rice cake can stick to the throat and block the airway, and its elastic consistency makes it extremely difficult to dislodge once lodged. In Tokyo alone, 368 people were hospitalized with mochi or similar items stuck in their throats between 2019 and 2023, and more than 90% of them were over 65.
What Makes Mochi Different From Other Choking Hazards
Most choking hazards are hard objects that block the airway like a plug. Mochi works differently. It’s made from glutinous rice that has been cooked and pounded until the individual grains lose their structure entirely, forming a smooth, elastic dough. The rice variety used is almost entirely composed of a starch called amylopectin, which gives cooked glutinous rice its sticky, adhesive quality. When that starch is gelatinized through cooking and pounding, the result is a food that is soft, highly viscous, and clings to whatever it touches.
This combination of stickiness and stretch is what makes mochi so problematic. A piece of mochi doesn’t just sit in the throat like a grape or a hot dog. It molds to the shape of the airway and adheres to the tissue, creating something closer to a seal. Because the dough is elastic, it resists being pushed out by coughing. Standard choking maneuvers that work well for rigid objects have a harder time with something that deforms under pressure rather than popping free. The same qualities that make mochi satisfying to chew, its pleasant chewiness and slight resistance, are exactly what make it dangerous when swallowed in too large a piece.
Why Elderly People Face the Highest Risk
The statistics are stark. During Japan’s 2025 New Year celebration, nine people in Tokyo were hospitalized after choking on mochi in just the first three days of January, and two elderly men died. In 2022, four elderly women died and 12 others were hospitalized. This pattern repeats every year, particularly around New Year’s, when mochi consumption spikes as part of traditional celebrations.
Several age-related changes converge to make mochi especially risky for older adults. Saliva production tends to decline with age, and saliva plays a critical role in softening food and forming it into a cohesive mass that can be swallowed safely. With less saliva, a sticky food like mochi becomes even harder to manage in the mouth. On top of that, the protective reflexes that guard the airway weaken over time. The swallowing reflex slows, the cough reflex becomes less forceful, and the muscles involved in chewing and swallowing lose strength. For some elderly people, particularly those in institutional care or living with neurological conditions, these protective reflexes may be significantly diminished or nearly absent.
Dentures also play a role. They reduce the ability to sense food texture and size in the mouth, making it easier to swallow a piece that’s too large before adequately chewing it.
Risks for Young Children
Children under three are also at elevated risk, though for different reasons. Their airways are simply smaller, so a piece of mochi that an adult could manage may completely obstruct a toddler’s throat. Young children are still developing the neuromuscular coordination needed for effective chewing and swallowing. They tend to bite off pieces they can’t fully break down and may not chew thoroughly before swallowing. Their cough reflex, while present, generates less force than an adult’s, making it harder to expel something sticky and pliable.
How to Reduce the Risk
Japanese health authorities issue public warnings about mochi every year before the New Year holiday. The core advice is practical: cut mochi into small, bite-sized pieces before eating. Chew each piece thoroughly before swallowing. Have water or tea nearby to help soften the mochi and keep the throat moist. Eat slowly and avoid talking or laughing while chewing, since both can cause a premature swallow. For elderly family members, some people soften mochi further by warming it or cutting it into especially small portions.
For young children, the same principles apply with extra caution. Pieces should be small enough that even if swallowed whole, they’re unlikely to block the airway. Supervising children while they eat mochi is essential, since quick intervention makes the difference in a choking emergency.
What to Do If Someone Chokes on Mochi
If someone is choking on mochi and cannot cough, speak, or breathe effectively, act immediately. The recommended approach is to alternate between five firm back blows (delivered between the shoulder blades with the heel of your hand) and five abdominal thrusts, sometimes called the Heimlich maneuver. For abdominal thrusts, stand behind the person, place your fist just above their belly button, grasp it with your other hand, and push sharply inward and upward.
For infants under one year old, the technique is different. Hold the baby facedown along your forearm with the head positioned lower than the chest, supporting the jaw with your hand, and deliver five back blows. Then turn the infant face-up and give five chest compressions using two fingers on the breastbone.
If you’re alone and choking, you can perform abdominal thrusts on yourself by placing your fist above your belly button, grasping it with your other hand, and driving it inward and upward against a hard surface like the back of a chair. Because mochi’s stickiness makes it harder to dislodge than most foods, getting emergency help quickly is especially important if initial attempts at clearing the airway don’t work.