Blog
News, research and guides
755 articles from the VitMode editorial team.
Blog
755 articles from the VitMode editorial team.
GuidesIbuprofen and alcohol do not trigger a dangerous chemical reaction, but both irritate the stomach lining and both can burden the kidneys. The best available data come from a case-control study of 1,224 people with upper gastrointestinal bleeding: regular ibuprofen use was linked to a risk about 2.7 times higher, while occasional use showed no significant increase. We explain what this means for someone who fancies a glass of wine and a tablet for a headache, who should avoid the combination altogether, and what science does not yet know.
November 3, 2026
GuidesParacetamol is often regarded as a safe drug, but the line between a therapeutic and a toxic dose is narrower than for many other popular medicines. According to the NIH information page, the maximum dose for adults from all sources combined is 4,000 mg a day, and in a randomised trial in healthy adults taking exactly 4 g a day, ALT activity exceeded three times the upper limit of normal in 31-44% of people. We explain the mechanism of liver injury (NAPQI and glutathione), what is really known about alcohol, why a staggered overdose is dangerous, and in which combination products paracetamol hides.
November 3, 2026
GuidesNonsteroidal anti-inflammatory drugs (ibuprofen, naproxen, diclofenac) can raise blood pressure by about 5 mmHg on average and weaken blood pressure medicines, and combined with a diuretic and an ACE inhibitor or sartan they form the so-called triple whammy for the kidneys. We present data from a meta-analysis of randomised trials, from a 4-month trial with ambulatory blood pressure monitoring, from a large population study and from a Cochrane review of drugs applied to the skin. We also explain why paracetamol is not entirely neutral for blood pressure either, who should be most careful and what to do instead of reaching for a tablet.
November 3, 2026
GuidesHeartburn after stopping a proton pump inhibitor (omeprazole, pantoprazole, esomeprazole) can be a real phenomenon: in a randomised trial in healthy volunteers, after 8 weeks of esomeprazole 44% of people reported acid-related symptoms, compared with 15% in the placebo group. That does not mean the drug is addictive or that it must always be taken for life, however. We explain the difference between transient rebound and a true relapse of reflux disease, what the guidelines say about coming off the drug (gradual reduction, stopping, on-demand dosing), who should not stop a PPI and when symptoms need investigation.
November 3, 2026
GuidesFirst-generation antihistamines such as diphenhydramine cause drowsiness because they enter the brain and block the histamine receptors responsible for wakefulness. In a driving simulator a single 50 mg dose of diphenhydramine impaired driving more than alcohol at a blood level of about 0.1%, and self-rated drowsiness poorly predicted who drove worse. We explain how the generations of these drugs differ, what is known about using them as sleep aids (modest evidence, next-morning drowsiness, tolerance within a few days), why a warning about anticholinergic burden appears for older people and how to choose if you have to drive.
November 3, 2026
GuidesShaky hands are usually not the start of Parkinson's disease. More often they reflect an enhanced physiological tremor (coffee, stress, lack of sleep, medicines, an overactive thyroid) or essential tremor, the most common action tremor in adults. What decides the diagnosis is not the tremor itself but its pattern: whether it appears at rest or during movement and posture, which side is worse, and whether other symptoms come with it. We explain how to tell these types apart, what the guidelines say about propranolol and primidone, and when to book a neurologist.
November 3, 2026
GuidesMuscle twitching on its own, without weakness or wasting, is benign in the vast majority of cases. In a classic study of 121 people with benign fasciculations followed for 2 to 32 years, none developed motor neuron disease. What should worry you is not the twitch itself but what comes with it: progressive weakness, visible muscle wasting, trouble speaking or swallowing. We explain where fasciculations come from, what makes them worse (caffeine, exercise, stress, lack of sleep), what is really known about magnesium, what role EMG plays and when to see a neurologist.
November 3, 2026
GuidesTingling and numbness in the feet have a dozen or so possible causes, and the pattern of symptoms often suggests where to start. Tingling in both feet that starts in the toes and creeps upward (a 'stocking' pattern) is most often polyneuropathy: diabetic or prediabetic, from vitamin B12 deficiency, alcohol or drugs. Tingling in one foot, in a strip of skin or on one side of the sole, is often a pinched nerve root or tarsal tunnel syndrome. Neurology guidelines name the highest-yield tests as glucose, vitamin B12 with metabolic markers and serum protein electrophoresis with immunofixation. We explain the differential, the order of tests and the warning signs.
November 3, 2026
GuidesRaynaud's phenomenon is an episodic spasm of the finger vessels triggered by cold or stress: the fingers go white, then blue, then red. Most often it is primary, benign and affects young women, but it can also be the first sign of a systemic disease such as scleroderma or lupus. The key question is therefore not 'do I have cold fingers' but 'is it the primary or the secondary form'. We explain how to tell them apart (nailfold capillaroscopy, antibodies), what the Cochrane review says about calcium channel blockers, how to reduce attacks without drugs and when to see a doctor.
November 3, 2026
GuidesNumbness of the face or tongue can be a dangerous symptom, but much more often it is harmless. The line is drawn by timing and accompanying symptoms: sudden numbness of one half of the face or tongue, especially with a drooping corner of the mouth, arm weakness, or problems with speech, vision or balance, is a reason to call emergency services (112 in the EU) even if the symptoms pass within minutes, because it may be a transient ischaemic attack (TIA). Gradual onset with migraine, numbness around the mouth after anxiety and fast breathing, numbness after dental treatment, or tingling after a raw fruit in an allergic person usually has a different background. We explain how to tell these situations apart.
November 3, 2026
GuidesKnuckle cracking and popping knees are among the most common body noises, and among the most often demonised. Studies have not shown that habitual knuckle cracking raises the risk of hand arthritis, and knee crepitus occurs in roughly 4 in 10 people, including those without pain. We explain where the sound comes from, what the research shows and when a noisy joint deserves attention: when it comes with pain, swelling, locking or a feeling of instability.
November 3, 2026
GuidesJoint stiffness on waking that eases within about half an hour is typical of osteoarthritis. Stiffness lasting longer than 30–60 minutes, especially with swollen joints, night pain or improvement with movement, usually points to inflammatory causes: rheumatoid arthritis, polymyalgia rheumatica or spondyloarthritis. We explain what the criteria and studies say, what role CRP, rheumatoid factor and anti-CCP play, and when to book a rheumatologist.
November 3, 2026
GuidesThe foundation of knee osteoarthritis treatment is exercise and, if overweight, weight loss; these are the best-supported methods, while knee arthroscopy brings no real benefit. A Cochrane review of 139 trials (12,468 people) points to improved function and pain after exercise, and an analysis of 1,383 people showed that a meaningful functional improvement needs a loss of about 7.7% of body weight. We also describe honestly what is known about medicines, steroid and hyaluronic acid injections, and when to consider a knee replacement.
November 3, 2026
GuidesBursitis causes pain, swelling and tenderness around a joint, most often the elbow, knee and outer side of the hip. In the hip, what is called 'bursitis' is usually gluteal tendinopathy, and in a randomised trial education with exercise gave a better result after a year than a steroid injection. The bursae of the elbow and knee can become infected: fever, rapidly spreading redness and warmth call for urgent medical assessment.
November 3, 2026
GuidesA bunion is a common foot deformity: globally it affects about 19% of people, and in women it is twice as common as in men. Insoles, splints and comfortable footwear can ease pain but do not reverse the deformity; in a randomised trial of 209 people, after a year 83% of those operated, 46% of those using orthoses and 24% of those with no treatment reported improvement. Surgery makes sense for persistent pain, but the deformity returns in about a quarter of cases.
November 3, 2026
GuidesA cough that lasts longer than 8 weeks is called chronic, and it is rarely just a 'long cold'. Guidelines list a handful of recurring causes: postnasal drip from the upper airways, asthma, reflux, eosinophilic bronchitis, ACE-inhibitor drugs and smoking. We explain the order in which a cause is looked for, what a chest X-ray and spirometry really add, why a cough can persist despite treatment, and which signs (coughing blood, weight loss) call for prompt investigation.
November 3, 2026
GuidesBreathlessness on stairs or while walking can result from poor fitness, but also from asthma, heart failure, iron deficiency, obesity or, less often, lung cancer. In a study of people with unexplained breathlessness and a normal NT-proBNP, nearly half simply had reduced fitness and about one in six had early heart failure with preserved ejection fraction. We explain how doctors separate these causes (blood count, spirometry, ECG, NT-proBNP, echo, exercise test) and which symptoms call for urgent review.
November 3, 2026
GuidesOxygen saturation (SpO2) shows what share of the haemoglobin in the blood is loaded with oxygen. In one study a medical pulse oximeter was off by about 1 percentage point on average, but in a few percent of people the difference reached 4 points or more. We explain what disturbs the reading (cold hands, dark nail polish, movement, skin tone), how accurate watches and bands are at low saturation, which values are considered normal and when a low reading needs a doctor.
November 3, 2026
GuidesAn occasional choke is normal, but coughing at every meal, a wet voice after eating, recurrent pneumonia or weight loss are reasons to test swallowing. Swallowing problems affect about 1 in 5 older people living at home, and some aspiration is silent. We explain how to tell dysphagia from reflux and other causes, what studies say about screening tests and swallowing imaging (FEES, videofluoroscopy), and when to see a doctor or speech therapist.
November 3, 2026
GuidesWheezing in the chest is associated with asthma, but the same sound can come from COPD, heart failure, vocal cord dysfunction (inducible laryngeal obstruction), an allergic reaction or a foreign body in the airways. Telling wheeze (breathing out, narrowing in the lungs) from stridor (breathing in, narrowing in the upper airway) can be key. We explain what studies say about the overlap of these conditions, how spirometry with a flow-volume loop helps, how vocal cord dysfunction is treated and which symptoms need urgent help.
November 3, 2026
GuidesThe heavy-eyelid afternoon after lunch is one of the most common adult experiences, yet the science explains it less obviously than popular wisdom about 'sugar' and 'carbs' suggests. Studies of meals of different composition and size show that the afternoon dip in alertness is largely a circadian phenomenon, and lunch mostly deepens it, especially after a short night. We explain what is actually known, how much blame belongs to glucose swings, when sleepiness after a meal can signal sleep apnoea or disturbed carbohydrate metabolism, and which simple changes make sense.
November 3, 2026
GuidesBrain fog is not a diagnosis but an everyday name for a cluster of symptoms: trouble concentrating, slower thinking, losing words and a feeling of 'cotton wool in the head'. Behind it most often lie lack of sleep, low mood, stress, deficiencies or hormonal disturbances, medicines, or a past viral infection, and less often a neurological disease. We present what research says about each cause (including meta-analyses on sleep loss, depression and long COVID), what a reasonable stepwise work-up looks like, and which symptoms need prompt consultation.
November 3, 2026
GuidesTiredness after exercise is normal and is sometimes the goal of planned loading, but when it does not pass despite rest, performance drops and mood worsens, a cause has to be sought. The ECSS and ACSM consensus describes a path from short-term, functional overreaching to overtraining syndrome, and the diagnosis rests mainly on exclusion: of energy and carbohydrate deficits, iron deficiency, infection and organic disease. We explain how to tell healthy tiredness from a problem, what research says about iron, low energy availability (RED-S) and recovery, and which symptoms, such as dark urine, need urgent help.
November 3, 2026
GuidesFeeling cold when others are warm is often just a personal trait, but a persistent, new or worsening sense of cold can point to an underactive thyroid, iron deficiency and anaemia, too low a body weight or energy deficit, and sometimes circulation problems. Cold intolerance is a non-specific symptom, so the diagnosis rests on tests, not on the sensation alone. We present what research says about the thyroid, iron, energy deficit and differences between women and men, which tests are worth ordering and when the symptom needs prompt consultation.
November 3, 2026