What Does Raspberry Ketone Do for Skin?
What the single small topical study, lab research on lightening and supplement safety data actually show about raspberry ketone and your skin.
OPA Nutrition Blog
Supplement & Wellness Guides
Plain-English guides to CoQ10, magnesium, gut health, sleep, blood sugar and more: what the research says and how to choose the right supplement.
167 articles
When Should You Take Raspberry Ketones? Timing and What Research Shows
When to take raspberry ketones, how often, why caffeine in most formulas points to a morning dose, what studies measured and what is still unknown.
Raspberry Ketones Benefits: What the Research Says
What raspberry ketone is, what human and animal studies measured, the doses studied, and why evidence for benefits in people remains thin.
A Beginner's Guide to the Keto Diet: How It Works and What Studies Show
A research-based beginner guide to keto: how ketosis works, carb ranges, foods, keto flu, what weight trials found, side effects and who should check first.
Mediterranean Diet Recipes: 9 Easy Meals and Pantry Staples
Nine simple Mediterranean diet recipes for breakfast, lunch, dinner and snacks, each with an ingredient list and short method, plus pantry staples.
Mediterranean Diet Meal Plan: 7-Day Menu and Shopping List
A 7-day Mediterranean menu with portions for every meal, federal serving targets at 2,000 calories, a shopping list and prep tips.
Mediterranean Diet for Weight Loss: What the Research Shows
What trials measured on Mediterranean eating and weight, how it compares with low-carb and low-fat diets, and how to portion olive oil and nuts.
What Is the Mediterranean Diet? Foods, Servings and How to Start
The Mediterranean eating pattern explained: pyramid servings, olive oil, the USDA Mediterranean-style pattern, what PREDIMED measured, and simple first steps.
The Best Vitamins and Supplements for Memory and Brain Health: What the Evidence Shows
An honest look at B12, folate, omega-3s, ginkgo, bacopa, caffeine with L-theanine and citicoline for memory and focus, with safety and interaction notes.
Intermittent Fasting for Weight Loss: Schedules and Research
What randomized trials found when 16:8, 5:2 and alternate-day fasting were compared with daily calorie cutting, plus a sample day and safety notes.
Intermittent Fasting for Women: Schedules, Hormones and Safety
Gentle fasting schedules for women, what small studies show about hormones and cycles, and why pregnancy, breastfeeding or eating history mean waiting.
Benefits of Intermittent Fasting: What Human Studies Show
An evidence-based overview of intermittent fasting: 16:8, 5:2 and alternate-day schedules, what trials found, what is unproven, and who should get advice first.