In a study published in the Journal of the Royal Society of Medicine, a psychiatrist specializing in sexual dysfunction, David Healy, calls for recognition of post-antidepressant sexual dysfunction, i.e. those sexual problems that can arise after treatment for depression.
According to Healy, in fact, problems of a sexual nature can begin even after a few doses of medication and can sometimes remain for life. Other times it can happen that a slight pre-existing dysfunction can worsen dramatically if the person stops treatment for depression.
The condition, already known as post-SSRI sexual dysfunction (PSSD), sees genital numbness, loss of orgasm and overall libido. According to the same researcher, both sexes can be affected, in every age group and ethnic group.
According to Healy some of the people who suffer from this condition tend not to place too much importance on it because they think that, once the treatment for depression is over or stopped, things will return to normal but in reality, as the same researcher suggests, in many cases the conditions remain the same or get worse.
Precisely for this reason, the researcher states that there is a strong need to recognize at the medical level but also to make people aware of this type of sexual dysfunction related to the treatment of depression so that they can be treated more profitably.
The first fungi would have appeared on Earth between 715 and 810 million years ago, at least 300 million years earlier than previously calculated, according to a new study in Science Advances. According to the researchers of this new study, the first fungi were very important for the development of the first plants that colonized the mainland after they appeared in the sea.
The study shows how mysterious the origin and evolution of fungi, one of the strangest life forms, remains. The problem with fungi lies in the fact that fossils are very few or at least extremely rare and, as far as the smaller fungi are concerned, they are difficult to distinguish from other microorganisms.
The new study was carried out by Professor Steeve Bonneville of the Université libre de Bruxelles, who together with his team analyzed fossilized remains of microscopic fungi that seem to have formed “nets” or ramifications similar to mycelium impressed on an underground rock, relatively rich in organic substances, which represented an ideal environment for the conservation of the fossil. These fossils had been discovered in the Democratic Republic of Congo are part of the collection of the Museum of Africa in Tervuren.
The particularity of these mushrooms lies in the fact that they were formed in a lagoon or lake environment between 715 and 810 million years ago. This led researchers themselves to believe that these microscopic fungi may have been important partners of the first plants that colonized the earth’s surface around 500 million years ago, as Bonneville himself explains. The researchers used multiple techniques to analyze and date the fossils of these fungi, from synchrotron radiation spectroscopy to μ-Raman confocal microscopy to electron and fluorescence microscopy.
They have therefore not only dated the period in which these fungi lived but have also studied their chemistry and discovered that they could have lived more than 800 million years ago.
According to the researchers, it was the ephemeral ponds, small bodies of water that formed and dried in perennial cycles, that favored the first physical interactions between fungi and algae. During the Neoproterozoic era (between 1000 and 542 million years ago) fungi would have helped plants colonize the earth’s surface, 300 million years before the first tests of plants on land.
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