National Institutes of Health

A 2025 study found that termination of federal research grants disrupted about 1 in 30 clinical trials funded by the National Institutes of Health.

A 2025 study found that more than 74,000 patients were enrolled in clinical trials that were interrupted by termination of National Institutes of Health grants.

A 2025 study found that the National Institutes of Health terminated grants for 383 clinical trials between February 28, 2025 and August 15, 2025 out of 11,008 clinical trials it funded during that period.

A 2025 study found that more than 14% of infectious disease trials, about 6% of respiratory illness trials, and about 5% of cardiovascular trials funded by the National Institutes of Health had their funding terminated.

A 2025 study published in JAMA Internal Medicine found that 383 clinical trials funded by the National Institutes of Health between 2025-02-28 and 2025-08-15 experienced funding interruptions, representing nearly 1 in 30 (about 383 of 11,008) NIH-funded clinical trials during that period.

A 2025 study found that clinical trials with interrupted NIH funding included 74,311 participants enrolled in trials that were active and not recruiting, a status in which participants may have been receiving interventions.

A 2025 study reported that among NIH-funded clinical trials whose funding was interrupted, over 36% had been completed, about 35% were recruiting, about 11% were active but not recruiting, about 14% were active but not yet recruiting, and the remaining trials were enrolling by invitation.

A 2025 study found that NIH-funded clinical trials conducted outside the United States were disproportionately affected by funding interruptions, that the U.S. Northeast had the highest regional rate of interrupted trials within the United States, and that more than 115 interrupted trials studied cancer while 97 interrupted trials studied infectious disease.

The gut–brain connection refers to two-way communication between the digestive system and the brain through nerves, hormones, and gut microbes.

A 2023 National Institutes of Health RECOVER study of 3,659 participants identified eight distinct long COVID symptom trajectories measured between three and 15 months after infection.

The 2023 National Institutes of Health RECOVER study sample was 69% female and 99.6% of participants were studied during the Omicron variant era.

A 2023 National Institutes of Health Researching COVID to Enhance Recovery (RECOVER) study of long COVID identified eight distinct symptom trajectory patterns experienced by participants.

A 2023 National Institutes of Health RECOVER long COVID study included 3,659 participants, of whom 69% were female and 99.6% were studied during the Omicron variant era.

The U.S. National Institutes of Health states that vitamin D3 is produced in the body after exposure to sunlight and is found in animal-derived foods, while vitamin D2 is derived from plant or fungal sources.

The National Institutes of Health identifies possible autism risk factors that include prenatal exposure to pesticides or air pollution, extreme prematurity or low birth weight, certain maternal health conditions, and older parental age at conception.