Foods in Focus– category –
An evidence-based series examining everyday foods and supplements that readers want to know more about.
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Foods in Focus
Low-Carb vs Low-Fat: How Much Should You Cut Rice and Bread? The Answer Is “What You Swap In,” Not the Ratio [2026 Evidence Review]
For weight loss, low-carb and low-fat end up equal at one year (DIETFITS; a 121-RCT meta-analysis). Carbohydrate share and mortality form a U-curve with 50–55% at the bottom. Swapping carbs for animal foods raises mortality (HR 1.18); swapping for plant foods lowers it (HR 0.82). Low-carb's edge in type 2 diabetes is short-term only. Do-it-yourself keto is not recommended. -
Foods in Focus
Is Coffee Good for You? The Evidence Says: 2–4 Cups, Filtered, Before 2 p.m. [2026]
Large cohorts and an umbrella review agree: 2–4 cups a day carries the lowest mortality, cardiovascular, and diabetes risk. Coffee does not trigger atrial fibrillation (RCTs). The exception is severe hypertension. Sleep is the real trade-off — 400 mg six hours before bed cuts sleep by an hour. -
Foods in Focus
How Much Protein Do You Really Need? Protein Powder Won’t Build Muscle on Its Own [2026 Evidence Review]
The 0.8 g/kg RDA is a floor. International consensus: 1.0–1.2 g/kg after 50, 1.2–1.6 g/kg with resistance training. Healthy kidneys tolerate high protein; CKD and prior cardiovascular disease are different. Protein powder clearly helps only alongside strength training. -
Foods in Focus
Is Milk Good or Bad for You? Testing the “Phosphorus Cancels Calcium” Claim [2026]
Does milk's phosphorus cancel calcium's benefit, making it a net negative? A peer-reviewed review rejects the claim: milk's Ca/P ratio is favorable; watch inorganic phosphorus in processed foods. Centered on fermented dairy, in moderation, dairy likely benefits Japanese people. -
Foods in Focus
Are Fermented Foods and Miso Soup Really Good for You? [2026 Evidence Review]
Are fermented foods really healthy? Miso research conflicts on gastric cancer, and miso soup mixes a fermentation upside with a sodium downside. A peer-reviewed review: one low-salt, veggie-packed bowl a day is neutral-to-beneficial; three or more is unfavorable. -
Foods in Focus
[Foods in Focus] Is Excessive Alcohol Really Bad for You? — A Thorough Evidence-Based Review
If you've held onto "red wine is good for you," the latest evidence has bad news. Since 2023, major institutions have shifted toward "there is no safe level for health." Here's what changed and what a pragmatic stance looks like. Conclus... -
Foods in Focus
[Foods in Focus] Is the Charred Flavor in Yakiniku and Grilled Foods Really Bad for You? — A Thorough Evidence-Based Review
You've probably heard "the burnt bits cause cancer." The actual story involves heterocyclic amines (HCAs) and polycyclic aromatic hydrocarbons (PAHs). We give you the realistic risk picture and the cooking adjustments that meaningfully r... -
Foods in Focus
[Foods in Focus] Are Sweet Buns and Pastries Really Bad for You? — A Thorough Evidence-Based Review
Convenience-store pastries for breakfast or as an afternoon snack are a bigger deal than they look. The combination of refined sugar, refined flour, and fat lands harder than the same calories elsewhere. "Sometimes" and "every day" are v... -
Foods in Focus
[Foods in Focus] Are Instant Noodles Really Bad for You? — A Thorough Evidence-Based Review
Instant noodles are cheap, fast, and convenient. They also carry a sodium and additive load that adds up. How many times per week is too many — and what small habits can blunt the downside? Conclusion: Eating instant noodles two or more ... -
Foods in Focus
[Foods in Focus] Are Fried Foods and French Fries Really Bad for You? — A Thorough Evidence-Based Review
If you love fried food, this one's for you. We look at how frequency of consumption maps onto cardiovascular disease, type 2 diabetes, and all-cause mortality in cohort studies — and whether "restaurant fried" and "home fried" really dif... -
Foods in Focus
[Foods in Focus] Are Energy Drinks Really Bad for You? — A Thorough Evidence-Based Review
Energy drinks have moved from niche to daily for a lot of people. How much caffeine compared to coffee, and how serious are the effects on the heart, sleep, and adolescents? Case reports and regulatory shifts included. Conclusion: There ... -
Foods in Focus
[Foods in Focus] Are Potato Chips and Snacks Really Bad for You? — A Thorough Evidence-Based Review
One-more-handful chips have a way of becoming "oh, the bag is empty." Sodium, refined oils, acrylamide, the ultra-processed food story — several risk vectors stack here. We explain why and how often is realistic. Conclusion: Potato chips...