Explore Capsules
22 capsules

Organic Food and Health: Pesticides, Evidence, and Premiums
Paying extra for organic rests on health claims the evidence struggles to settle. The views split over how reliable pesticide residue data is, whether exposure during critical developmental windows changes the risk picture, and whether the studies behind the claims hold up to scrutiny. Decide how much of the premium is protection and how much is faith.

Sun Exposure and Health: Vitamin D, Skin Cancer, and Sunscreen
Sun gives you vitamin D and may lower mortality, yet it also drives skin cancer, and the advice you hear rarely holds both truths. These views differ on the benefits of moderate sun, the limits of the studies, and how to warn people without stoking fear. Read them to set a sun habit you can actually trust.

The Exerciser's Guide to Weight, Health, and Habit
Exercise affects weight, health, and daily routine in different ways, and each goal calls for a different strategy. Readers will learn how to separate fat loss from broader health gains, understand the role of diet, and build forms of movement that are realistic, rewarding, and sustainable.

Menopause Hormone Therapy: Risks, Timing, and Treatment Choices
For women weighing hormone therapy, the stakes are relief from menopause symptoms against feared risks of breast cancer and heart disease. The views split over whether the original risk data was exaggerated, how much the timing of treatment matters, and whether low-dose vaginal estrogen is safer than its warnings suggest. Sort the evidence from the alarm and decide with your doctor what fits your health.

Salt and Health Guidelines: Measurement, Genetics, and Policy
Salt and health guidelines depend on how sodium intake is measured, how individual biology affects salt sensitivity, and how population policies translate evidence into recommendations. Readers will understand the main sources of disagreement behind sodium targets, including measurement uncertainty, genetic variation, and the record of public health interventions.

Exercise Settings and Mental Health: Evidence, Motivation, and Fit
Outdoor workouts are praised as a mood cure, yet much of that research is thinner than it looks. Gym, park, or living room, the setting may matter less, or more, than you think, depending on what you need exercise to do for you.

Full-Fat Dairy and Health: Evidence, Biomarkers, and Diet Patterns
For decades full-fat dairy was something to avoid, but the case against it is shakier than the label suggests. These arguments differ on reading the evidence, whether biomarkers vindicate whole milk and cheese, whether to judge the whole diet instead of single nutrients, and whether all saturated fats even behave alike. Weigh them to decide how dairy fits your plate.

Peter Attia's Outlive: Longevity Guidelines, Evidence, and Tradeoffs
Longevity medicine offers varied guidelines on exercise intensity, supplement timing, medical screening, and cold exposure. These guidelines differ on how to balance rigorous research with practical daily actions, when to intervene medically, and how to safely apply cold therapies. Understanding these differences helps you choose personalized strategies for healthspan and lifespan optimization.

Intermittent Fasting and Weight Loss: Evidence, Benefits, and Risks
Intermittent fasting is sold as a shortcut, but head-to-head it doesn't clearly beat plain old calorie control for weight loss. Some trials show perks like better insulin sensitivity, yet the rigorous evidence finds no meaningful difference on the scale. Focus on sustainable eating, and check with a professional before you try fasting.

Gut Microbes and Mood: Weighing the Evidence
The gut-brain link is exciting, but whether your microbes cause mood changes or just correlate with them decides how much to trust probiotics. These views differ on demanding strict standardized trials, tightening safety and protocol, and sharpening methods to capture how gut and brain actually talk. Weigh them to judge how confident to be in gut-based treatments.

Digital Eye Strain: Blue Light Glasses, Dry Eyes, and Screen Habits
Screen-weary eyes have made blue light glasses a booming product, but the evidence behind them is shakier than the marketing suggests. The views here split over whether relief really comes from treating dry eyes, fixing your desk setup, and changing screen habits before bed rather than from tinted lenses. Sort out which fixes are backed by evidence before you spend on the wrong one.

Beyond BMI: Waist Size Is the Better Measure of Health
BMI mislabels healthy people, fuels body image problems, and steers health policy in the wrong direction. The case here is that waist circumference and waist-to-height ratio predict real risks like heart disease and diabetes far better, because belly fat matters more than total weight. Measuring your waist instead gives you and your doctor a more honest, less stigmatizing read on your health.