Parkinson’s is the second most common neurodegenerative disease after Alzheimer’s. It affects 7 million people around the world, including one million people in the US and about 127,000 in the UK. The condition is caused by the death of nerve cells in the brain that produce the neurotransmitter dopamine, and its physical symptoms include tremor, rigidity and slowness of movement. There are also psychological effects, especially anxiety and depression.
Life is so unfair. Trying to give up something you’re addicted to just makes you crave that thing even more, whether it’s cigarettes, alcohol or sugar. You’re caught in a Catch-22: you want to quit, but the more you try, the harder it gets to resist temptation. Perhaps the key is not to try so damn hard, but instead improve your brain’s capacity for self-control.