Caffeine

Articles under this tag cover how caffeine affects energy, focus, training performance, and sleep, including smart timing and dosing strategies. It also explores how caffeine interacts with stress hormones, recovery, and overall health optimization for men.

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The essentials for caffeine — then explore the latest posts below.

Best weight loss supplements for men: What research actually supports

Best weight loss supplements for men: What research actually supports

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Feb 10, 2026 · 12 min read

The best weight loss supplements for men are the few that show modest, repeatable benefits in human studies, mainly caffeine, green tea extract, and soluble fiber, with mixed evidence for garcinia cambogia and forskolin. The win is not “magic fat loss.” It is small leverage on appetite, energy expenditure, and waist size when you also ...

Can you drink coffee while fasting? What black coffee really does to a fast

Can you drink coffee while fasting? What black coffee really does to a fast

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 30, 2025 · 10 min read

Black coffee does not break a metabolic fast for most men because an 8 ounce cup has about 3 calories and is unlikely to trigger a meaningful insulin response. The real risk comes from what you add to it, plus how caffeine affects hunger, blood sugar, cortisol, and your gut when your stomach is empty. ...

The truth about energy drinks without sucralose: What to know before you crack a can

The truth about energy drinks without sucralose: What to know before you crack a can

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 20, 2025 · 14 min read

Energy drinks without sucralose can reduce your exposure to one common artificial sweetener, but they are not automatically “healthy.” The real make or break factors are caffeine dose, added sugar, stacked stimulants like guarana, and whether the drink disrupts your sleep, gut, or blood pressure. Here is the truth about energy drinks without sucralose and ...

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