Peer-reviewed research concerning blood sugar, summarized and appraised in plain language with every source cited.
This study looked at whether a quick, low-effort high-intensity interval training routine (REHIT) could improve blood sugar control after meals and over a full day in healthy, active middle-aged men.…
This study looked at how high-intensity interval training (HIIT), where short bursts of hard effort alternate with easier recovery periods, with or without L-citrulline (an amino acid that may boost…
This study compared two approaches to resistance training, linear periodization (a steady progression of weight up and reps down over months) and undulating periodization (varying weight and reps week to…
This systematic review and meta-analysis set out to find which lifestyle, environmental and health factors go with higher sperm DNA fragmentation, meaning breaks in the genetic material inside sperm, where…
This study set out to see how severe sleep restriction affects appetite, food intake, and appetite-regulating hormones in healthy young men. It compared three nights of very little sleep (2…
This study set out to compare how young and older men's hormone levels respond to a night without sleep. It measured testosterone, luteinizing hormone (LH, a pituitary hormone that signals…
This study set out to see whether two weeks of eating earlier in the day improves how muscle takes up sugar and amino acids. Sixteen healthy young men were put…
This study set out to see whether restricting the hours of the day a man eats improves how his body handles sugar. Fifteen men at risk of type 2 diabetes,…
This study set out to test whether the benefits of intermittent fasting come only from losing weight. Men with prediabetes ate all their meals inside a 6 hour window early…
This study set out to test whether vitamin D supplements raise testosterone in healthy men. It randomly assigned 98 men with normal testosterone but low vitamin D to a high…
This study looked at whether catching up on sleep at the weekend improves insulin sensitivity and hormones in men who habitually sleep too little in the week. Nineteen such men…
This study set out to see how cutting sleep affects glucose handling and hormones in young men. Fourteen healthy men were kept in a laboratory for two nights of 10…