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Smoking Shrinks Brain Faster Than Aging
1 Apr
Summary
- Smoking tobacco and cannabis speeds up brain shrinkage.
- Cannabis use linked to smaller amygdala, impacting emotions.
- Tobacco use causes volume loss in brain regions like insula.
New research indicates that smoking tobacco and cannabis can dramatically speed up the natural process of brain shrinkage associated with aging. The study found a correlation between cannabis use and a reduction in amygdala volume, a key area for processing emotions and survival instincts. Such shrinkage can lead to emotional imbalance and impaired danger recognition.
Furthermore, tobacco smoking has been linked to volume loss in several other brain regions. These include the pallidum, essential for controlled movement and emotional processing, and the insula, which influences bodily sensations, cognitive functions, and self-awareness. These changes may contribute to neurodegenerative symptoms.
The study suggests that the harms of combustion, producing reactive oxygen species, might be a primary cause of neuronal cell death. Researchers recommend that public health campaigns and healthcare professionals inform the public about these brain-related risks alongside traditional concerns like lung cancer. They also advise considering the implications of co-using tobacco and cannabis.
