Psychology Today | 13.10.2026 22:44
For decades, psychiatrists have believed that depression is caused by a deficiency of chemical messengers known as neurotransmitters. A lack of these chemicals has been touted as the cause of depression, and antidepressant medicines were believed to work by increasing them. But about one third of patients with depression don’t respond to conventional antidepressants. This suggests there’s more to this story, and new research suggests that our blood sugar may be a missing piece in the depression puzzle.
