Blood tests in late pregnancy to identify small babies and those at risk of stillbirth
Blood thinners for pulmonary hypertension
Blood thinners for the initial treatment of blood clots in people with cancer
Blood thinners for the long-term treatment of blood clots in people with cancer
Blood thinners for the prevention of blood clots in people with cancer undergoing surgery
Blood thinners to prevent blood clots in people with cancer and central venous catheters
Blood transfusion for anaemia in patients with advanced cancer
Blood transfusion for treating malarial anaemia
Blood transfusion policies for sickle cell disease in pregnancy
Blood transfusions for people with sickle cell disease before they undergo surgery
Blood transfusions for treating acute chest syndrome in people with sickle cell disease
Blood transfusions in patients with heart problems requiring surgery on their heart
Blood-clot promoting drugs for acute traumatic injury
Blue-light filtering spectacle lenses for visual performance, sleep, and macular health in adults
BMJ partners with Cochrane ​Clinical Answers​ to boost knowledge at the point of care
Body position and apnoea in the preterm infant
Body position and intake of fluids for preventing headache after a lumbar puncture
Body warming of people undergoing surgery to avoid complications and increase comfort after surgery
Body weight management in overweight and obese breast cancer survivors
Bone grafts and bone substitutes for treating distal radial fractures in adults
Bone-modifying agents for the prevention of bone loss in women with early or locally advanced breast cancer: a systematic review and network meta-analysis
Boosted protease inhibitor (PI) monotherapy for treating HIV/AIDS
Booster dose for preventing hepatitis B infection
Both hormone replacement therapy and danazol stop the loss of bone density that occurs when women take gonadotrophin-releasing hormone analogues for endometriosis
Botulinum A toxin for focal hand dystonia
Botulinum toxin A injections to treat the spastic hip in cerebral palsy
Botulinum toxin for adult spasticity after stroke or non-progressive brain lesion
Botulinum toxin for drooling in Parkinson’s disease
Botulinum toxin for facial wrinkles
Botulinum toxin for motor and phonic tics
Botulinum toxin for people with involuntary posturing of the head
Botulinum toxin for shoulder pain
Botulinum toxin for subacute and chronic neck pain
Botulinum toxin for swallowing disorders
Botulinum toxin for the treatment of chronic idiopathic constipation
Botulinum toxin for the treatment of strabismus
Botulinum toxin injectable drug for myofascial pain syndrome (a painful condition that could affect any muscle in the body) in adults
Botulinum toxin injection for tennis elbow
Botulinum toxin injections as a treatment for low-back pain and sciatica
Botulinum toxin injections for preventing migraine in adults
Botulinum toxin injections for the treatment of spasmodic dysphonia
Botulinum toxin injections into the bladder for overactive bladder syndrome in adults
Botulinum Toxin type A (BtA) muscular injections are beneficial in treating hemifacial spasm.
Botulinum toxin type A for masseter hypertrophy
Botulinum toxin type A formulations in focal dystonias
Botulinum toxin type A injections for the treatment of lower limb spasticity in cerebral palsy
Botulinum toxin type A local injection therapy for blepharospasm or involuntary eyelid closure
Bowel Preparation and Prokinetic Agents for Small Bowel Capsule Endoscopy
Bowel preparation for colonoscopy
Bowel Preparation for Paediatric Colonoscopy
Braces and orthoses for osteoarthritis of the knee
Braces for idiopathic scoliosis in adolescents
Bradykinin beta-2 receptor antagonists for traumatic brain injury
Brain imaging for diagnosing schizophrenia in people with first episode psychosis
Brain natriuretic peptide and N-terminal brain natriuretic peptide for the diagnosis of hemodynamically significant patent ductus arteriosus in preterm neonates
Brain scans for people with cerebral gliomas
Branched-chain amino acid supplementation for improving nutrition in term and preterm neonates
Branched-chain amino acids improve symptoms of hepatic encephalopathy
Brazil launches first-ever Cochrane Network
Breast Cancer Awareness Month
Breast cancer in female survivors of childhood, adolescent or young adult cancer after radiotherapy involving the chest for their primary malignancy
Breast examination during pregnancy for promoting breastfeeding
Breast milk expression during pregnancy by women with diabetes for improving infant outcomes
Breast stimulation for cervical ripening and induction of labour
Breast surgery for metastatic breast cancer
Breast-feeding is better, but using hydrolysed milk formula (instead of formulas based on cow's milk or soy) can help reduce the risk of some high-risk babies developing asthma
Breastfeeding education and support for women with multiple pregnancies
Breastfeeding for oral health in preschool children
Breastfeeding or breast milk for procedural pain in neonates
Breastfeeding the newborn or nipple stimulation for reducing postpartum haemorrhage in the third stage of labour
Breathing exercises for asthma
Breathing exercises for children with asthma
Breathing exercises for chronic obstructive pulmonary disease
Breathing exercises for dysfunctional breathing/hyperventilation syndrome
Breathing support via a mask during exercise training for people with chronic obstructive pulmonary disease
Breathing training before surgery for reducing lung complications after surgery in adults undergoing heart and major abdominal surgery
Brexpiprazole versus placebo for people with schizophrenia
Brief alcohol questionnaires for identifying hazardous, harmful and dependent alcohol use in primary care
Brief co-incubation of sperm and oocytes for in vitro fertilization (IVF) techniques
Brief family intervention for schizophrenia
Brief interventions for heavy alcohol users admitted to general hospital wards
Brief teaching methods to improve contraceptive use among young people
Brief versus standard cognitive behavioural therapy for schizophrenia
Bright light therapy for sleep problems in adults aged 60+
Brivaracetam add-on therapy for drug-resistant epilepsy
Bromocriptine does not appear to increase pregnancy rates for women with unexplained subfertility
Bromocriptine for idiopathic oligo/asthenospermia
Bromocriptine for levodopa-induced motor complications in Parkinson's disease
Bromocriptine for type 2 diabetes mellitus
Bromocriptine versus levodopa in early Parkinson's disease
Bromocriptine/levodopa combined versus levodopa alone for early Parkinson's disease
Bronchial thermoplasty for people with asthma
Bronchodilators delivered by nebuliser versus inhalers for lung attacks of chronic obstructive pulmonary disease
Bronchodilators for bronchiolitis for infants with first-time wheezing
Bronchodilators for the prevention and treatment of chronic lung disease in preterm infants
Bronchopulmonary hygiene physical therapy for chronic obstructive pulmonary disease and bronchiectasis
Bronchoscopic lung volume reduction procedures for moderate to severe chronic obstructive pulmonary disease
BtA injections provide more objective and subjective benefit than trihexyphenidyl to patients with cervical dystonia.
Buccal or sublingual misoprostol for cervical ripening and induction of labour
Budesonide at different doses for asthma
Budesonide for maintenance of remission in Crohn's disease
Budesonide for treatment of people with active Crohn's disease.
Budesonide versus placebo for asthma
Buffered solutions versus 0.9% saline for resuscitation in critically ill adults and children
Buffered versus non-buffered fluids given to adults during surgery
Buflomedil for acute ischaemic stroke
Buflomedil for intermittent claudication
Built environment interventions for increasing physical activity in adults and children
Bulking agents, antispasmodics and antidepressants for the treatment of irritable bowel syndrome
Buprenorphine for managing opioid withdrawal
Buprenorphine for neuropathic pain in adults
Buprenorphine for treating people with cancer pain
Buprenorphine maintenance versus placebo or methadone maintenance for opioid dependence
Bupropion for attention deficit hyperactivity disorder (ADHD) in adults
Bupropion versus other antidepressive agents for depression
Buteyko breathing for asthma
Bypass for primary percutaneous intervention or thrombolysis at the nearest hospital for patients suffering ST-elevation myocardial infarction
Bypass surgery for chronic lower limb ischaemia
C-reactive protein for diagnosing infection in newborn infants
Cabergoline for levodopa-induced complications in Parkinson's disease
Cabergoline versus bromocriptine for levodopa-induced complications in Parkinson's disease
CAD/CAM versus traditional indirect methods in the fabrication of inlays, onlays, and crowns
Caesarean delivery for the second twin
Caesarean section for non-medical reasons at term
Caesarean section versus vaginal delivery for preterm birth for women with a single baby (not multiple birth)
Caesarean section versus vaginal delivery for preventing mother to infant hepatitis C virus transmission
Caffeine as an analgesic adjuvant for acute pain in adults
Caffeine for cognition
Caffeine for preventing injuries and errors in shift workers
Caffeine versus theophylline for apnea in preterm infants
Calcimimetics for secondary hyperparathyroidism in chronic kidney disease patients
Calcineurin inhibitor minimisation, ie, reduction or withdrawal, versus continuation of calcineurin inhibitor treatment for liver transplant patients
Calcineurin inhibitor withdrawal or tapering for kidney transplant recipients
Calcitonin for preventing and treating corticosteroid-induced osteoporosis
Calcitonin testing for detection of medullary thyroid cancer in patients with thyroid nodules
Calcitonin used to treat metastatic bone pain
Calcium and vitamin D for treating osteoporosis caused by the use of steroids
Calcium antagonists as an add-on therapy for drug-resistant epilepsy
Calcium antagonists for acute ischemic stroke
Calcium antagonists for aneurysmal subarachnoid haemorrhage
Calcium antagonists for unstable angina
Calcium channel blockers as medical expulsive therapy for ureteric stones
Calcium channel blockers can reduce the death of tubular cells in the kidney after a transplant operation
Calcium channel blockers for antipsychotic-induced tardive dyskinesia
Calcium channel blockers for inhibiting preterm labour and birth
Calcium channel blockers for people with chronic kidney disease requiring dialysis
Calcium channel blockers for potential impaired fetal growth
Calcium channel blockers for preventing heart dysfunction related with iron overload in transfusion-dependent beta thalassaemia
Calcium channel blockers for primary Raynaud's phenomenon
Calcium channel blockers for pulmonary arterial hypertension
Calcium channel blockers for treatment of patients with Raynaud’s phenomenon
Calcium channel blockers versus other classes of drugs for hypertension
Calcium channel blocking drugs for Duchenne muscular dystrophy
Calcium for improving bone mineral density in children
Calcium supplementation during pregnancy for preventing blood pressure disorders and related problems
Calcium supplementation for the management of primary hypertension in adults
Calcium supplementation for weight reduction in overweight or obese people
Calcium, vitamin D or recombinant parathyroid hormone for managing post-thyroidectomy hypoparathyroidism
Call for 'Expressions of Interest' to Join the Cochrane US Network now open
Call for nominations: Cochrane seeks two external members to join Board
Calling all Citizen Scientists! Join the CitSciMed Blitz!
Calorie-controlled diets for chronic asthma
Campaigning for Evidence: Sara Yaron - a patient's story
Campaigns to encourage children to wear cycle helmets
Can additional chemotherapy after initial treatment for locally advanced stage cervical cancer reduce recurrence and extend life?
Can antibiotics as compared to placebo prevent postoperative wound infections after open groin hernia repair surgery?
Can antibody induction therapy help to reduce organ rejection for lung transplant recipients?
Can apps be used for the delivery of survey questionnaires in public health and clinical research?
Can brief interventions delivered in schools reduce substance use among adolescents?
Can cannabinoid type 1 receptor antagonists help smokers to quit, and could they also reduce the amount of weight gained during the quitting process?
Can changing antipsychotic medication improve side effects like increases in weight, blood sugar and cholesterol?
Can cognitive behavioural therapy reduce harmful sexual behaviour in adolescents?
Can cognitive stimulation benefit people with dementia?
Can community interventions deter young people from starting to smoke?
Can community interventions reduce smoking among adults
Can community pharmacy interventions help improve pharmacy workers' skills and pharmacy users' health outcomes through health promotion?
Can cytokines and growth factors help prevent mouth soreness and ulcers (oral mucositis) in patients being treated for cancer?
Can dihydrocodeine reduce illegal opiate use in adolescents and adults?
Can electronic cigarettes help people stop smoking, and are they safe to use for this purpose?
Can ethical case interventions improve healthcare?
Can exenatide, a diabetes drug, be used to treat Parkinson's disease?
Can exercise give better results after spinal surgery for spinal stenosis?
Can exercise help people quit smoking?
Can exercise interventions enhance health-related quality of life among cancer survivors?
Can exercise interventions enhance health-related quality of life among people with cancer undergoing active treatment?
Can exercise, for women with gestational diabetes, improve outcomes for mother and her baby?
Can exercising before vaccination reduce numbers of adults who get flu or develop complications?
Can exhaled nitric oxide be used to adjust asthma medications in children with asthma?
Can health care providers who are not doctors perform abortions as well as doctors?
Can illegal cigarette sales to underage youth be prevented, and does it change their smoking behaviour
Can individual caseworker-assigned discharge plans reduce readmissions for acute exacerbations in children with chronic respiratory disease?
Can inserting a cervical stitch prevent early births of single babies?
Can Internet-based interventions help people to stop smoking? 
Can interventions delivered by dental professionals help tobacco users to quit?
Can interventions for parents and people caring for children reduce children's exposure to tobacco smoke?
Can interventions to improve professional adherence to guidelines prevent device-related infections?
Can keeping the mouth cold during cancer treatment help to prevent mouth soreness and ulcers in children and adults?
Can lobeline help people to quit smoking
Can mass media campaigns (television, radio, newspapers, billboards and booklets) deter young people from starting to smoke?
Can mefloquine prevent malaria during travel to areas where the disease is widespread?
Can music interventions benefit cancer patients?
Can music interventions replace sedatives for reduction of preoperative anxiety?
Can nicotine receptor partial agonists, including cytisine and varenicline, help people to stop smoking?
Can nicotine replacement therapy (NRT) help people quit smoking?
Can nicotine vaccines help people stop smoking or help stop recent quitters from relapsing?
Can oral Astragalus (Huang qi) prevent frequent acute respiratory tract infections in children?
Can organisational infrastructures be effective in promoting evidence-based nursing practice?
Can people be helped to stop smoking before they have surgery?
Can people stop smoking by cutting down the amount they smoke first?
Can percussion, diuresis, and inversion therapy improve outcomes for people with lower pole kidney stones following shock wave lithotripsy?
Can physical exercise improve blood flow through the veins?
Can pressure ulcers be prevented by using different support surfaces?
Can programmes delivered by mobile phones help people to stop smoking?
Can programmes delivered in school prevent young people from starting to smoke?
Can psychological therapies help people who self-harm?
Can recruitment strategies make smokers more likely to enter programmes to help them quit smoking?
Can rewards help smokers to quit in the long term?
Can services delivered by pharmacists improve patient health?
Can shared decision-making between the patient and the healthcare professional help people with asthma?
Can smartphone apps improve access to asthma self management?
Can smokers be helped to reduce the harm caused by cigarette smoking by smoking fewer cigarettes or using different tobacco products?
Can smoking cessation interventions among adults with pulmonary tuberculosis improve their tuberculosis treatment outcomes?
Can smoking cessation interventions targeted at Indigenous populations achieve smoking abstinence?
Can smoking prevention interventions targeted at Indigenous youth prevent Indigenous youth from starting to smoke or use other tobacco products?
Can strategies intended to improve how care is organised or delivered to people with overweight or obesity lead to greater weight reduction?
Can symptoms and medical examination accurately diagnose COVID-19 disease?
Can taking inhaled corticosteroids when needed for symptoms help people with mild asthma from becoming more unwell?
Can tests used to identify the main groin lymph node/s in women with vulval cancer accurately predict whether the cancer has spread to the groin/s?
Can the glucose-lowering drugs insulin secretagogues prevent or delay type 2 diabetes mellitus and its associated complications in persons at increased risk of this disease?
Can the public release of performance data in health care influence the behaviour of consumers, healthcare providers, and organisations?
Can the use of standardised packaging for tobacco products reduce the use of tobacco?
Can third-party inspections of whether healthcare organisations are fulfilling mandatory standards improve healthcare outcomes?
Can tobacco control programmes that include a mass media campaign help to reduce levels of smoking among adults?
Can training health professionals to ask people if they smoke increase offers of advice and help patients quit?
Can ultrasound therapy help to heal venous (varicose) leg ulcers and/or improve symptoms?
Can users of waterpipes be helped to quit through smoking cessation interventions?
Can we help smokers to increase their use of stop-smoking medicines?
Can xylitol used in products like sweets, candy, chewing gum and toothpaste help prevent tooth decay in children and adults?
Canadian C-spine rule and the National Emergency X-Radiography Utilization Study (NEXUS) for detecting clinically important cervical spine injury following blunt trauma
Cancer genetic risk assessment for individuals at risk of familial breast cancer
Cancer patients with fever and suspected infection can be treated with a single 'new-generation' beta-lactam antibiotic
Cannabinoids for epilepsy
Cannabinoids for the treatment of dementia
Cannabinoids for Tourette syndrome
Cannabis and cannabinoids for people with multiple sclerosis
Cannabis and cannabis oil for the treatment of Crohn's disease
Cannabis and cannabis oil for the treatment of ulcerative colitis
Cannabis for schizophrenia
Cannabis products for adults with chronic neuropathic pain
Cannabis products for people with fibromyalgia