That article came out in march this year. It's not new, and it's been disputed anyway.
There wasn't any impact at all from that story.
"Dr Stuart Trager, chairman of the Atkins Physician Council, said clinical research had contradicted Dr Wurtman's findings.
He cited one study which found controlling carboydrate intake improved the mood of 51% of those who took part.
He said: "We would hope that medical practitioners and those who participate in low carbohydrate lifestyles will recognize that mood, and energy levels are related to many factors, and as such reaching conclusions like this is not practical.
"Controlling carbohydrates helps people manage their weight, improve body image and stabilizes blood sugar.
"Additionally, it is important to remember that serotonin, the chemical these researchers are discussing is made within the body from ingested protein, rather than carbohydrates."
Brigid McKevith, a nutrition scientist at the British Nutrition Foundation, told BBC News Online the effect of diet on serotonin was far from clear cut.
She said: "It has been suggested that a meal high carbohydrate may lead to an increase in serotonin, but the effect is unlikely to be significant when eating a meal because as little as 2-4% of calories from protein will prevent this.
"It is worth remembering that many foods - such as milk, beans and even potatoes - contain both carbohydrate and protein."
http://news.bbc.co.uk/1/hi/health/3522903.stm