A prospective study conducted by John Mitchell from University College London, in collaboration with colleagues from Australia, the UK, Canada, and the USA, concluded that increasing physical activity by 15 minutes per day by reducing sleep or sitting time contributes to lowering the risk of developing cancer.
The study analyzed data from over 59,200 adult participants, with an average age of 61.7 years, and 55 percent of respondents were women. Accelerometers were used to assess sleep duration, sitting, standing, and physical activity, while physical loads were categorized into low, medium, and high intensity.
Cancer diagnoses concerning 13 different locations and related to the level of physical activity were obtained from regional health registries. The analysis of the relationship between the collected data was performed using Cox proportional hazards models. The results of this study were officially published in the journal BMC Medicine.
The Ministry of Health has provided clarifications regarding which medical services patients are entitled to receive free of charge when receiving state-funded treatment. According to the agency's response to a request from Podrobno.uz, all services, medications, medical devices, and consumables included in the approved clinical protocol are covered by the state budget.
As part of legislative changes, it was clarified that the term 'order' is no longer used. Patients are now issued an electronic referral containing a QR code, which confirms their right to receive a specific volume of medical care from the state. The clinic is obliged to provide diagnosis, treatment, and rehabilitation free of charge within this scope, prohibiting patients from purchasing necessary drugs or consumables independently. Furthermore, no fee is charged for issuing extracts from medical documents.
If an additional illness is discovered during examination, its treatment may also be financed by the state, but within the basic cost established for that new diagnosis. However, paid services are permissible in several cases: if a person approached the clinic without a referral, chose a higher-level institution bypassing the established procedure, or is undergoing treatment in a private department. Payment may also be possible for additional procedures not included in the guaranteed package or clinical protocol. An exception is emergency and urgent care, which does not require a referral.
Any demand for payment in other situations is considered a violation. The Ministry also emphasized that hospitals are obliged to inform the public about available free services and the conditions for receiving them through stands, information kiosks, official websites, and hotlines. It was previously reported that as of July 1, private clinics in Uzbekistan gained the right to provide services at the state's expense across all directions specified in their licenses.
Many parents mistakenly believe that children should continue taking vitamin D and calcium for a long time; however, the need for these supplements is individual and depends on the child's age, diet, sun exposure, and overall health condition.
The decision on how much vitamin D to give an infant after birth and for how long must be made solely based on a doctor's recommendation. The risk of vitamin D deficiency is higher in newborns and young children, especially those who do not receive breast milk; such children are prescribed vitamin supplements after consulting with a doctor. Although special attention is paid to the needs in the first months of life, the duration of intake is determined by the child's general health status.
Vitamin D functions not only to strengthen bones but also helps the body absorb calcium. If there is a deficiency of vitamin D, even if calcium is present in the child's diet, its benefits will not be fully realized. The need for calcium persists throughout the entire growth period and increases with age. Nevertheless, this does not mean that all children require additional calcium tablets; if the child regularly consumes milk, yogurt, or cheese, supplementary intake may not be necessary.
Dr. Rahul Verma, Associate Director of the Pediatric Department at Yashoda Medicity Hospital, commented on this issue. He stated that it is recommended to give the child 400 IU of vitamin D daily from birth to one year of age. After this, the dosage can be increased as necessary based on clinical examinations and blood tests.
Parents should avoid self-prescribing vitamin D or calcium supplements for a long period, as excessive consumption of supplements can also be harmful. If the child exhibits signs such as frequent bone pain, weakness, muscle problems, slowed growth, or malnutrition, they should consult a doctor.
Dr. Rahul Verma emphasized that instead of relying solely on supplements, it is crucial to pay attention to a balanced diet, age-appropriate physical activity, and sufficient sun exposure. The decision regarding the necessity of supplements and the duration of the course must be made by a pediatrician, based on the specific needs of the child.
Researchers have discovered a previously unknown folding of beta-amyloid filaments associated with an extremely rare form of Alzheimer's disease. This structure potentially explains why the protein concentrates around blood vessels and is linked to cerebral hemorrhages.
The study analyzed brain tissues from two patients who had the Flemish mutation in the precursor gene for beta-amyloid (APP). This mutation was identified in two families and two other individuals, typically leading to death by the late fifties.
The researchers examined the brain samples of these two patients after their deaths. Both belonged to known families with this form of dementia.
Cryo-electron microscopy (cryo-EM) was used to visualize the filaments—a method that allows observation of structures at near atomic resolution. The result showed a specific Z-shaped configuration that had not been previously identified.
The geometry of this structure may play an important role in understanding protein behavior, as the filaments tend to aggregate around blood vessels. The folding makes the amino acid F20 accessible. According to the researchers, this feature may contribute to the contact of the filaments with the components of vessel walls.
This is where one of the most serious consequences of the disease manifests—Cerebral Amyloid Angiopathy (CAA). This condition involves the deposition of beta-amyloid in the vessels and causes brain hemorrhages.
The cause of this structure's formation was also determined. The Flemish mutation removes one methyl group from beta-amyloid at residue 21. This change apparently promotes the formation of the Z-shaped folding. The researchers noted: 'Our results show how the loss of one methyl group at residue 21 leads to Aβ-folding with vascular tropism.'
There is an interesting aspect to this mechanism: previous studies demonstrated that beta-amyloid produced by the mutation has a lower tendency to aggregate in laboratory settings. Nevertheless, when deposits appear in the brain, the damage can be as intense as in traditional Alzheimer's disease.
In living organisms, the Flemish mutation causes the formation of the largest and most stable amyloid plaques observed in this disease. The interaction of these structures with blood vessels may help explain their potential to cause harm.
It is not yet clear exactly how this new structure contributes to brain destruction leading to dementia. Future research must investigate this mechanism in cellular and animal models.
Future studies must determine whether the Flemish folding alters the seeding, propagation, or neurotoxicity process in cellular or animal models. It is also necessary to establish whether similar structural principles occur in other hereditary or sporadic forms of Alzheimer's disease.
