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Have you ever wondered why SSRIs take time to show effects? A new study has delved into why antidepressants like SSRIs take weeks to start working and how this may impact mental health care.


SSRIs, or Selective Serotonin Reuptake Inhibitors, belong to a category of antidepressant drugs designed to elevate serotonin levels in the brain. Notable examples of SSRIs include fluoxetine (Prozac), sertraline (Zoloft), and escitalopram (Lexapro).

These medications generally have few unpleasant side effects and can be highly effective in treating various mood disorders, including depression and certain anxiety disorders. However, one significant drawback of SSRIs is the delayed onset of their therapeutic effects — SSRIs often take several weeks to show noticeable improvements in mood.

Scientists have unveiled a roadmap for bringing perovskite/silicon tandem solar cells to market, paving the way for a future powered by abundant, inexpensive clean energy in Saudi Arabia and the world.

The authors of the article, published in Science, include Prof. Stefaan De Wolf and his research team at King Abdullah University of Science (KAUST) and Technology Solar Center. The team is working on improving solar efficiency to meet Saudi Arabia’ solar targets.

Perovskite/silicon technology combines the strengths of two materials— ’s efficient light absorption and silicon’s long-term stability—to achieve record-breaking efficiency. In 2023, the De Wolf laboratory reported two for , with five achieved globally in the same year, showing rapid progress in perovskite/silicon tandem technology.

Every time a cancer cell divides, it sustains damage to its own DNA molecules. Researchers, including Gaorav Gupta, MD, Ph.D., associate professor in the Department of Radiation Oncology at the UNC School of Medicine, have long wondered how cancers are able to evade detection by the body’s own defenses, despite the immune system being on constant watch for cells displaying DNA damage.