Doctor warns: Sleeping with head covered risks Alzheimer's, heart attack.

• Sleeping with your head covered under a blanket in winter is a dangerous habit, according to experts.
• This practice reduces oxygen levels in the body, potentially causing fatigue, headaches, confusion, and increasing the risk of Alzheimer's or dementia over time.
• It is especially dangerous for individuals with sleep apnea, as it can worsen their breathing difficulties.
• Reduced oxygen flow from sleeping with a covered head can lead to suffocation and increase the risk of heart attack, particularly for those with asthma or heart disease.
• To mitigate risks, cover your head but ensure your nose and mouth remain uncovered for adequate oxygen intake.

Why It Matters: Covering your head while sleeping reduces oxygen, risking serious health problems.