Ultimate Guide

Foods high in saturated fat including butter, red meat, pork, ground beef, sausages, milk, cheese, and cream.

How to reduce saturated fat in your diet

🕗 11 min read

Estrogen replacement therapy and metabolic health

The 2026 Levels Guide to hormone replacement therapy

Jennifer Chesak

🕗 12 min read

As TRT presciptions and influencer chatter skyrocket, research shows its potential, particularly for aging males. But TRT isn’t entirely risk-free. Here's everything you need to know about testosterone replacement therapy.

The 2026 Levels Guide to testosterone replacement therapy

🕗 12 min read

Now used by millions, GLP-1 agonist drugs like Wegovy are also being studied for everything from weight loss to gambling addiction. Here’s what we know now.

What the latest research says about GLP-1s in 2025

🕗 8 min read

Increasingly used in packaged foods, this fat is beneficial compared to other seed oils, yet also has drawbacks.

Is high-oleic sunflower oil healthy?

Stephanie Eckelkamp

🕗 10 min read

This tiny gland affects nearly every cell in your body. Here’s how to keep it functioning at its best to support your overall health.

The 2026 Levels Guide to Thyroid Health

🕗 10 min read

This approach to medical care seeks to treat the underlying causes of illness, but may be difficult to find or afford. Here’s what you need to know about functional medicine providers.

Is a functional medicine provider right for you, and how to find one

🕗 12 min read

As you age, your skeleton becomes vulnerable to diseases like osteoporosis and osteoarthritis, and deterioration can occur earlier than expected. Here’s how to strengthen and fortify your bones throughout life.

The 2026 Levels Guide to Bone Health

🕗 12 min read

Understanding how calories work in your body can help you make better food choices and reach your health and fitness goals.

How to think about calories and when they matter

🕗 10 min read

High blood pressure can silently cause damage throughout your body. Understanding how—and how you can fight back—can add years and vitality to your life.

The 2026 Levels Guide to hypertension

🕗 10 min read

Preliminary research suggests that the particles may increase inflammation and oxidative stress. They’re impossible to avoid, but minimizing exposure may help

The 2026 Levels Guide to microplastics and their impact on metabolic health

🕗 10 min read

Hunger is a natural (and essential) feeling, but it shouldn’t rule your life. Here’s why you might feel hungry all the time and how to manage it with specific nutrients, foods, and habits.

The 2025 Levels guide to hunger — and how to manage it

Stephanie Eckelkamp

🕗 15 min read

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