Strength training for beginners doesn’t have to mean rows of machines and hours at the gym. In this episode of The Habit Healers Podcast, I walk you through a simple full-body workout you do twice a week: six lifts that work every major muscle group in about an hour a week.

If you’ve put off lifting weights because it seemed like more time than you have, this one is for you. We talk about why a single compound exercise like the squat can train several muscles at once, what a “hard set” really is, and why light weights can build muscle too when you take each set close to your last good rep. I also share what the research shows about strength training after 50, including women past menopause with thin bones whose spines got denser on just two 30-minute sessions a week, and frail adults around 90 whose thigh strength nearly tripled. And I cover how to lift safely if you have osteoporosis, a past spine fracture, or heart disease, so you can start with confidence.

What you’ll learn:

* The six lifts, and the six directions of movement that cover every major muscle group

* How to recognize a hard set, and why you don’t need to train to failure to build muscle

* Why two short full-body workouts a week are enough for muscle and strength

* What the research says about strength training, longevity, and lower death rates

* How to adjust for osteoporosis, bone density concerns, and knee or shoulder pain

* A simple wall drill you can do tonight to learn the hip hinge

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/get-stronger-in-about-an-hour-a-week

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

Why do some people catch every cold that goes around while others never seem to get sick? On this episode of The Habit Healers Podcast, I’m sharing research that changed how I think about your immune system and the common cold, and it has nothing to do with vitamin C.

When healthy volunteers were given a cold virus on purpose, the people with more kinds of relationships got sick far less often. Not more friends, more kinds of connection: family, neighbors, coworkers, a club, a faith community. The virus still got in. Their bodies just handled it better. I’ll walk you through how this study worked, why the total number of people in your life didn’t seem to matter, and what a banana crop wiped out by a soil fungus has to do with your social health.

We’ll also talk about what hugs did and didn’t do for cold protection, why life changes like retirement or an empty nest can quietly shrink your social circle, and the simplest way to start rebuilding it before cold and flu season hits.

What you’ll learn:

* Why social connection may matter as much as sleep for avoiding the common cold

* The difference between having many people and many kinds of relationships

* How hugs and feeling supported related to infection when stress was high

* Why loneliness and social isolation can creep in even when your calendar is full

* A two-minute self-check to score your own social diversity

* One phone call you can make tonight to support your immune system naturally

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/does-your-social-life-accidentally

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

Does intermittent fasting actually work, or does 16:8 fasting just help you eat less? On this episode of The Habit Healers Podcast, I’m walking you through what the research on time-restricted eating really shows about weight loss, autophagy, and metabolic health.

If you’ve been keeping an eating window and wondering whether those fasting hours are doing something special in your body, this one is for you. I’m Dr. Laurie Marbas, and we’ll start with what happens after dinner: the metabolic switch from your last meal to stored fat, the cellular recycling process called autophagy, and how your circadian rhythm changes the way you handle food at different hours. Then we’ll look at what happened when researchers matched calories and changed only the timing, and why a story from cardiology in the 1980s is a useful warning about trusting a number just because you can count it. My goal isn’t to talk you out of fasting. It’s to help you judge it by what you can actually see.

What you’ll learn:

* Why time-restricted eating often works by quietly cutting calories

* What calorie-matched intermittent fasting trials found for weight loss and body fat

* What human research shows about autophagy, and what it doesn’t

* How an early eating window improved insulin sensitivity in one small, tightly controlled study

* Why tracking your strength matters if you’re fasting for weight loss

* Who should talk to their doctor first, including anyone taking insulin or sulfonylureas

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/does-fasting-work-because-you-ate

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

Does a light box for seasonal affective disorder really work, or did yours just never get a fair trial? In this episode, I walk through the research on light therapy for winter depression and the simple mistakes that keep it from working.

On this episode of The Habit Healers Podcast, I take you back to the early experiments showing that bright light, not ordinary room light, changes how the body responds. Then we look at a clever trial that put a 10,000 lux light box head to head with a common antidepressant, and the results surprised a lot of people. A recent depression treatment guideline now lists bright light as a first choice for depression that comes back every winter.

Here’s the part most people miss: the dose depends on how far you sit. Many light boxes only reach 10,000 lux a few inches from your face, and many ads show people sitting much too far away. I’ll walk you through how to choose a light box, when to use it, how long to sit, and how to tell whether it’s working, so you can treat seasonal depression with real evidence behind you.

What you’ll learn:

* How bright light therapy compared with an antidepressant for seasonal affective disorder

* Why distance from your light box changes the dose

* How to choose a 10,000 lux light box with white light and a UV filter

* Why morning light therapy works better than evening sessions

* Why it can take four weeks to judge whether light therapy is working

* Who should talk to a doctor before using a light box for depression

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/can-a-bright-lamp-in-the-morning

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

Is testosterone for women after menopause worth trying? If an online clinic has promised you that a testosterone cream will fix your low libido, energy, and weight, this episode looks at what the research actually shows.

On this episode of The Habit Healers Podcast, I’m walking you through more than thirty years of studies on testosterone therapy for women. We start with a surprising experiment involving blindfolded violinists, because it explains why you can’t judge a hormone fairly when you know you’re taking it. Then we look at what happened in placebo-controlled trials, what really happens to your testosterone at menopause, and why a blood test can’t tell you whether you need it.

Here’s what I want you to know: testosterone has one proven use after menopause, and it isn’t energy, brain fog, mood, or weight loss. If low sex drive in menopause is what’s bothering you, I’ll share where testosterone fits, why estrogen usually comes first, and how to set up a fair trial with your doctor so you know whether it’s working.

What you’ll learn:

* Why testosterone in women doesn’t crash at natural menopause

* What placebo-controlled trials found about testosterone for low libido after menopause

* Why a testosterone blood test can’t diagnose low sexual desire

* How an estrogen patch or gel differs from an estrogen pill in its effect on your own testosterone

* Why no testosterone product has FDA approval for women, and what the FDA is still asking about safety

* How to dose, monitor, and set a stop date for a fair testosterone trial

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/do-women-need-testosterone-after

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

Can you reverse type 2 diabetes? And why do some thin people develop insulin resistance and high blood sugar while others at a much higher weight have perfect labs? I’m Dr. Laurie Marbas, and in this episode I walk you through the personal fat threshold, the idea that changed how I think about type 2 diabetes remission.

For fifty years we were told diabetes was about how much fat you carry. The research from Professor Roy Taylor at Newcastle University points somewhere else: where your body stores it. I use a simple picture, a bathtub, to explain why each of us has a different limit for safe fat storage, and what happens when it overflows into the liver and pancreas. That overflow drives fatty liver, insulin resistance, and rising blood sugar, even at a normal BMI.

Here’s the hopeful part. The insulin-producing beta cells in your pancreas may not be gone. They may be resting, and the science suggests they can wake back up. I also share a few small daily habits that help lower blood sugar naturally, without overhauling your life.

In this episode of The Habit Healers Podcast, you’ll learn:

* What the personal fat threshold is, and why BMI misses your real type 2 diabetes risk

* How fat in the liver and pancreas drives insulin resistance, known as the Twin Cycle

* Why beta cells can recover, and what that means for type 2 diabetes remission

* How much weight loss the research links to remission: about 22 to 33 pounds for most people

* How quickly liver fat and fasting blood sugar can respond

* Four micro-habits for better blood sugar control: a pre-meal pantry staple, a seated calf movement, meal order, and evening light

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/why-can-a-150-pound-man-get-diabetes

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

Relative risk vs absolute risk: it’s the one distinction that changes how you read every health headline. In this episode, I’m walking you through how to read a medical study, so a big percentage in the news never misleads you again.

Welcome to The Habit Healers Podcast. I’m Dr. Laurie Marbas, and this is week two of Mini Medical School, where we’re learning to understand medical research together. Today we’re in the Results section, the part of a paper most people skip, and the part that tells you the most.

I’ll show you why a drug that “cuts risk in half” may only change your personal risk by one percentage point, and where to find the raw numbers that headlines leave out. We’ll talk about what a p-value really measures, why statistically significant does not always mean clinically significant, and how to read a confidence interval so you can tell a precise result from a shaky one. Then I’ll give you the most useful tool of all, the number needed to treat, or NNT, which tells you how many people have to take a treatment for one person to benefit.

You don’t need a math background for any of this. You just need to know which numbers to look for.

What you’ll learn:

* The difference between relative risk and absolute risk, and how to calculate absolute risk reduction yourself

* Where to find the real numbers in a medical study (skip the summary, go to the tables)

* What a p-value of 0.05 means, and what it doesn’t

* Statistical significance vs clinical significance: is the effect real, and does it matter?

* How to read a 95% confidence interval and spot the “line of no effect”

* How to use the number needed to treat (NNT) to weigh a treatment’s benefit against its side effects and cost

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/why-you-should-never-trust-a-percentage

Check out the Habit Healers Community: https://www.skool.com/habithealers/about