Andrew Smith

Do women prefer the sort of masculine faces that indicate high testosterone levels? New research suggests that the answer may depend upon where you live, but if you live in an advanced market economy, the answer is probably "yes."

A recommendation by two FDA advisory panels to narrow the official approval for testosterone replacement therapy has won generally favorable reviews from medical organizations, although questions remain about its ultimate impact.

Research from Denmark finds that people with diabetes are nearly twice as likely as non-diabetic people to develop atrial fibrillation.

Do longer periods of androgen-deprivation therapy significantly improve prostate cancer survival rates or needlessly impair quality of life for recovering patients?

New research suggests that low testosterone levels may indicate that men face a greater risk of sudden cardiac arrest.

Researchers from upstate New York have developed software that can detect atrial fibrillation by analyzing video from ordinary webcams.

New research indicates that atrial fibrillation (AF) eliminates the benefits that treatment with beta-blockers otherwise produces in patients with heart failure and reduced ejection fraction (HFrEF).

New research from Northwestern University has found that schools are woefully unprepared to deal with anaphylaxis and other life-threatening emergencies stemming from student allergies.

New research indicates that doctors who treat anaphylaxis with intravenous epinephrine rather than intramuscular or subcutaneous injections are increasing the risk that patients will suffer overdoses or other adverse reactions.

New questions about the risks of flying and the responsibilities of airlines have followed reports of anaphylaxis cases on two international flights in less than a month.

The US Food and Drug Administration recently approved a new algorithm that will enable many smart phones to detect signs of atrial fibrillation.

Staff scientists at the US Food and Drug Administration (FDA) have concluded that there's no "convincing evidence" linking testosterone replacement therapy with adverse cardiovascular events.

A new study showing significant negative correlation between phthalate absorption and testosterone levels adds considerably more weight and significant new details to a growing body of research.

New research suggests that oral immunotherapy may trigger anaphylaxis in an unusually high percentage of asthmatic teenagers with high-risk food allergies who failed to adhere to their management plan.

A common treatment for opioid addiction significantly reduces testosterone levels in many male patients; researchers suggest that supplementary testosterone might improve outcomes.

Analysis of fatal cases of anaphylaxis in Canada uncovers several trends that point to a need for more effective monitoring and treatment strategies in high-risk patients.

New research suggests that most patients who have suffered a stroke can be taught to reliably detect the first signs of atrial fibrillation by measuring their peripheral pulse at the radial artery.

Research suggests that patients who develop seemingly temporary cases of atrial fibrillation immediately after most types of surgery are dramatically more likely to suffer subsequent strokes.

New research about food allergies that can trigger severe reactions such as anaphylaxis has shown that cooking some foods can prevent attacks and help build tolerance.

New research finds that people with atrial fibrillation (AF) who undergo radiofrequency ablation and maintain sinus rhythm are less likely than those who opt against the procedure to die of heart attack or heart failure.

Analysis of more than 5,000 successful electrical cardioversions performed without anticoagulation suggests that patients and doctors must act fast to minimize the chances that acute atrial fibrillation will lead to thromboembolic events.

A California-based company has taken the final step toward bringing a cheaper epinephrine injection kit to the American market.

New research disputes a widely publicized study that linked testosterone replacement therapy with an increased risk of cardiovascular events and all-cause mortality.

New research shows that testosterone therapy does not significantly improve erectile function or lessen mild to moderate aging male symptoms in obese patients with type 2 diabetes mellitus.

When managing patients with atrial fibrillation, internists use antiarrthymic strategies that significantly differ from those utilized by cardiologists, though both types of physicians similarly diverge from treatment guidelines.

The recent death of a Canadian politician who was stung by wasps has drawn renewed attention to the dangers of anaphylaxis and the need for increased allergy testing.

Prior studies have reached contradictory conclusions about how strongly low levels of total testosterone correlate with high levels of metabolic syndrome.

Recent efforts to overhaul standards of care for both food allergies in general and anaphylaxis in particular led expert panels from the European Academy of Allergy and Clinical Immunology to a shocking conclusion.

Study results indicate androgen-deprivation therapy (ADT) does not extend the lives of men with early-stage prostate cancer.

New research on the link between antihypertensive medications and atrial fibrillation suggests diuretics may trigger new cases of the condition, while angiotensin-converting enzymes may protect against it.