Issue #39 (January 2018)

It can be hard to keep track of all of the health claims made for coffee. A 2017 umbrella review helps suss out what benefits and harms are associated with coffee intake.

In this interview, with Lifehacker health editor and writer Beth Skwarecki, we discuss the unique challenges of communicating the results of scientific studies to the general public, and more.

As men age, it becomes harder for them to maintain muscle mass. Can an overnight dose of protein help improve muscle protein synthesis in older men, even in the absence of exercise?

The evidence for caffeine habituation's effects on its ergogenic properties has been mixed. This trial adds to the evidence by going for longer and not relying on self-reported caffeine intake.

Cranberries have been long-suspected to help with UTIs. This meta-analysis looked at the evidence for it preventing noncomplicated UTI recurrence in otherwise healthy women.

Beta-alanine is thought to help decrease muscle fatigue through boosting intramuscular carnosine levels. This systematic review aimed to look at the state of the evidence for its efficacy.

Bicarbonate supplementation has mostly been tested for high-intensity exercise. But does it help for lower-intensity aerobic performance?

Proteins that need selenium to function help mitigate oxidation and regulate inflammation, processes that play a role in cardiovascular disease. Can supplementation with selenium help?