Dr Steve Ilardi is slim and enthusiastic, with intense eyes. The clinical psychologistis 7 000km from me, in Kansas, and we are chatting about his new book on Skype, the online videophone service.
“I’ve spent a lot of time pondering Skype,” he says. “On the one hand it provides a degree of social connectedness. On the other, you’re still essentially by yourself.” But, he concludes, “a large part of the human cortex is devoted to the processing of visual information, so I guess Skype is less alienating than voice calls.” Social connectedness is important to Ilardi.
In his book, The Depression Cure, he argues that the brain mistakenly interprets the pain of depression as an infection. Thinking that isolation is needed, it sends messages to the sufferer to “crawl into a hole and wait for it all to go away”. But this can be disastrous because what depressed people really need is the opposite: more human contact.
Which is why social connectedness forms one-sixth of his lifestyle-based cure for depression. The other five elements are meaningful activity (to prevent “ruminating” on negative thoughts), regular exercise, a diet rich in omega-3 fatty acids, daily exposure to sunlight and good quality, restorative sleep. The programme has one glaring omission: anti-depressant medication — because, according to Ilardi, the drugs simply don’t work.
“Meds have only around a 50% success rate,” he says. “Moreover, of the people who do improve, half experience a relapse. This lowers the recovery rate to only 25%. To make matters worse, the side effects often include emotional numbing, sexual dysfunction and weight gain.” As a respected clinical psychologist and university professor, Ilardi’s views are hard to dismiss.
A research team at his workplace, the University of Kansas, has been testing his system — known as TLC (therapeutic lifestyle change) — in clinical trials. The preliminary results show, he says, that every patient who put the full programme into practice got better.
Up to 20% of the British population will have clinical depression at some point, he says — twice as many as 30 years ago. Where has this depression epidemic come from? The answer, he suggests, lies in our lifestyle. “Our standard of living is better now than ever before, but technological progress comes with a dark underbelly.
Human beings were not designed for this poorly nourished, sedentary, indoor, sleep-deprived, socially isolated, frenzied pace of life. So depression continues its relentless march.” Our environment may have evolved rapidly but our physical evolution hasn’t kept up.
“Our genome hasn’t moved on since 12 000 years ago, when everyone on the planet was a hunter-gatherer,” he says. “Biologically, we still have Stone Age bodies. And when Stone Age body meets modern environment, the health consequences can be disastrous.” To counteract this, Ilardi focuses on the aspects of a primitive lifestyle that militate against depression.
“Hunter-gatherer tribes still exist today in some parts of the world,” he says, “and their level of depression is almost zero. The reasons ? They’re too busy to sit around brooding. They get lots of physical activity and sunlight. Their diet is rich in omega-3, their level of social connection is extraordinary, and they regularly have as much as 10 hours of sleep.”
So we should all burn our possessions and head into the forest? “Of course not,” Ilardi says. “That would be like a lifelong camping trip with 30 close relatives for company.
Nobody would recommend that.” Instead, we can adapt our modern lifestyle to match our genome by harnessing modern technology, such as fish oil supplements to increase our intake of omega-3. —