How Your Genes Can Influence When You Lose Your Virginity

Losing your virginity may seem like a product of circumstance, but according to a new study, the age at which you become sexually active can be—at least in part—determined by your DNA. The study, published in the journal Nature, found that while the age of first sexual experience is influenced more by factors like peer behavior and family background, genetics could account for 25% of variation. As Cambridge University epidemiologist John Perry put it, it’s “one quarter nature, three quarters nurture,” the Guardian reports. Some of the sections of DNA found to be connected with age of first sexual encounter were genes that influence the release of sex hormones and onset of puberty, while others are linked to things like behavior and appearance. The study was conducted using information about 125,000 people in the U.K. BioBank project and about 250,000 others in the U.S. and Iceland. [The Guardian]
Source: TIME.com: Top Science and Health Stories - Category: Consumer Health News Authors: Tags: Uncategorized Genetics Source Type: news

Related Links:

Authors: Hayashi Y, Hosoe N, Takabayashi K, Kamiya KJL, Mutaguchi M, Miyanaga R, Hirata K, Fukuhara S, Mikami Y, Sujino T, Masugi Y, Naganuma M, Ogata H, Kanai T Abstract Pyogenic granuloma (PG) generally appears in the skin or oral cavity, but rarely occurs in the small intestine, where it can cause bleeding. To date, only 35 cases of small intestinal PG have been reported in the English literature. We retrospectively collected information from the clinical records of seven cases of small intestinal PG that were managed in our hospital and summarized the characteristics. Further information on the clinical charact...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
We report four cases of vonoprazan-associated gastric mucosal redness. In all cases, esophagogastroduodenoscopy (EGD) demonstrated linear or spotty redness that newly appeared in the greater curvature of the middle gastric body after the initiation of vonoprazan, which disappeared after its discontinuation. A tissue biopsy taken from the gastric mucosa with redness revealed inflammatory cell infiltration, parietal cell protrusions (PCPs), and oxyntic gland dilatation. To our knowledge, this is the first report describing the endoscopic and pathological features of vonoprazan-associated gastric mucosal redness. PMID: 31...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Ono Y, Yoshikura N, Takekoshi A, Ohe N, Hayashi H, Yamada M, Hayashi Y, Kimura A, Shimohata T Abstract A 57-year-old woman with amyotrophic lateral sclerosis (ALS) receiving mechanical ventilation developed intractable right temporal headache. She was diagnosed with brain abscess secondary to chronic suppurative otitis media. In this case, the otitis media was caused by nasopharyngeal reflux associated with eustachian tube muscle weakness and a supine position. In addition, ALS patients under mechanical ventilation have a limited ability to convey their pain. Their complaints are often overlooked because m...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Ichijo M, Tsuchiya K, Kasai T, Inoshita N, Yoshimoto H, Yamada S, Kitamura K Abstract A 30-year-old woman with multiple ovarian cysts presented with high serum estradiol levels. She had a pituitary adenoma, but the follicle-stimulating hormone (FSH) concentration was within the normal range. The patient complained of neck pain and palpitations during the disease course, and laboratory results revealed thyrotoxicosis and a systemic inflammatory response with negative findings for anti-thyroid stimulating hormone (TSH) receptor antibody and positive findings for anti-thyroglobulin and anti-thyroid peroxidase...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Iwano K, Kurita A, Azuma S, Yazumi S PMID: 31611531 [PubMed - as supplied by publisher]
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Imazu N, Shibata M, Koya Y, Morino K, Honma Y, Senju M, Watanabe T, Harada M Abstract A 69-year-old man was diagnosed with a liver abscess and received antibiotics at a local hospital. He was referred to our hospital due to a persistent fever. He had hepatic masses protruding from the liver surface toward the transverse colon. We reached a diagnosis of inflammatory pseudotumor (IPT) by a percutaneous liver biopsy. Colonoscopy showed direct invasion of IPT to the colon. His condition improved by the intravenous administration of antibiotics. Hepatic IPT is often misdiagnosed as a malignant tumor. We should ...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Usami J, Takezawa Y PMID: 31611529 [PubMed - as supplied by publisher]
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Sonoda A, Wada Y, Togo K, Mizukami K, Fuyuno Y, Umeno J, Fujioka S, Fukuda K, Okamoto K, Ogawa R, Okimoto T, Murakami K Abstract Patients with chronic enteropathy associated with SLCO2A1 (CEAS) develop multiple circular, longitudinal, or eccentric ulcers in the ileum. It is sometimes difficult to distinguish CEAS from Crohn's disease. CEAS and primary hypertrophic osteoarthropathy (PHO) are together known to be caused by a mutation of SLCO2A1 gene. The case of a 65-year-old man whose characteristic appearance due to pachydermia of the forehead folds led to the diagnosis of CEAS with PHO is presented. P...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Higashihara T, Okada A, Nakamura Y, Saigusa H, Homma S, Matsumura M, Kusano T, Shimizu A, Takano H Abstract We performed a renal biopsy for nephrotic syndrome in a patient with squamous cell lung carcinoma, which can worsen the prognosis. Chemoradiation therapy was effective for the cancer and proteinuria; we thus inferred that the nephrotic syndrome had been closely associated with the carcinoma. A pathological analysis of the kidney showed monoclonality for λ chain, satisfying the diagnostic criteria of proliferative glomerulonephritis with monoclonal immunoglobulin deposits (PGNMID); however, con...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Daida K, Ogaki K, Hayashida A, Ando M, Yokoyama K, Noda K, Kanbayashi T, Hattori N, Okuma Y Abstract A 67-year-old woman with neuromyelitis optica spectrum disorder (NMOSD) developed severe somnolence. Ten days after admission, fluid-attenuated inversion-recovery magnetic resonance imaging (MRI) revealed hyperintense areas around the bilateral hypothalamus, which were not present on MRI at admission. The orexin level, which is decreased in idiopathic narcolepsy, was slightly decreased in her cerebrospinal fluid. Immunosuppressive treatment and methylphenidate markedly improved her somnolence. This case sho...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
More News: Cambridge University | Epidemiology | Genetics | Health | Hormones | Science | Study