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Sexually transmitted disease
Sexually transmitted diseases (STDs) also known as sexually transmissible diseases, sexually transmitted infections (STIs) or (infrequently) venereal diseases (VD), are diseases or infections that have a significant probability of transmission between humans by means of sexual contact. Depending on the STD, a person may or may not still be able to spread the infection if no signs of disease are present. For example, a person is much more likely to spread herpes infection when blisters are present (STD) than when they are absent (STI). However, a person can spread HIV infection (STI) at any time, even if he/she has not developed symptoms of AIDS (STD).
All sexual behaviors that involve contact with another person or the bodily fluids of another person should be considered to contain some risk of transmission of sexually transmitted diseases.
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Health & Medicine News
November 13, 2026
Nov. 13, 2026 A new study reveals that viral infections may leave behind hidden damage to the immune system long after symptoms disappear. Researchers found that mice recovering from an acute infection experienced ...
Nov. 13, 2026 A study of more than 750,000 pregnancies found that early exposure to Ozempic, Wegovy, and similar drugs was not linked to increased pregnancy complications when used for weight loss, but was ...
Nov. 13, 2026 A major study of nearly 1,900 older adults suggests that stopping statins after age 70 may be relatively safe in the short term for people who have never experienced a heart attack or stroke. However, a higher rate of serious cardiovascular events ...
Nov. 12, 2026 Researchers have uncovered a surprising hidden function of a protein that may hold the key to repairing damaged muscles and treating muscular dystrophy. Known for protecting chromosomes, TRF2 also helps muscle stem cells maintain their identity and ...
Nov. 12, 2026 A surprising new study suggests that where men get their protein may be linked to their testosterone levels. Researchers studying more than 2,500 men found that higher animal protein intake, particularly from dairy, was associated with lower ...
Nov. 12, 2026 Colorectal cancer is making an alarming comeback in the United States after more than 20 years of declining rates, and the increase is no longer limited to younger adults. A major new study found ...
Nov. 12, 2026 Scientists have developed an AI-powered approach that makes experimental bionic vision technology more precise, helping predict the flashes and shapes of light perceived by a blind man with a brain implant. By learning how an individual's brain ...
Nov. 12, 2026 An NIH study found that women with high levels of two common “forever chemicals” had up to 93% higher rates of an aggressive form of breast cancer. The discovery raises concerns about the ...
Nov. 11, 2026 Scientists have uncovered a surprising way that fructose, a sugar commonly found in sweetened foods and drinks, may help aggressive ovarian cancer spread. Researchers discovered that cancer cells ...
Nov. 11, 2026 A surprising new study suggests that walking, jogging, and even traditional weight training may be less effective at stimulating bone formation than high-intensity sports involving explosive movements and sudden changes in direction. Researchers ...
Nov. 11, 2026 A new study found that energy drinks and stimulant supplements were linked to disproportionately frequent reports of serious heart problems, including 11 times more reports of cardiac arrest and 4.5 times more reports of heart attacks. Young adults ...
Nov. 11, 2026 A surprising study of more than 4,500 older adults found that people who were overweight or obese when diagnosed with dementia had a 16% to 27% lower risk of death than those at a normal weight. Researchers suspect that extra energy and muscle ...
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Nov. 11, 2026 Ancient manuscripts, including the 1,000-year-old York Gospels, have revealed traces of a deadly sheep virus whose history stretches back more than 3,700 years. Scientists discovered that the virus ...
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Nov. 10, 2026 Even when bad cholesterol is brought down to healthy levels, some people remain at risk of heart attacks, and scientists may have discovered why. Researchers identified two types of fat-carrying ...
Nov. 10, 2026 Scientists have discovered that tumors release natural antioxidants to shut down the immune cells responsible for destroying cancer, exploiting a surprising weakness in the body's defenses. Blocking ...
Nov. 9, 2026 A surprising discovery suggests that some early signs of Alzheimer’s disease may begin outside the brain. Using miniature laboratory systems made from human cells, scientists found that genetic ...
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Nov. 9, 2026 Scientists have discovered that gut bacteria can feed on the protective mucus lining your intestines, producing potentially harmful compounds, but ...
Nov. 9, 2026 After more than 35 years of research, scientists have uncovered surprising clues about what really drives Lyme disease risk. Contrary to longstanding assumptions, deer populations appear less ...