Charlie Seltzer, MD

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Charlie Seltzer, MD Dr. Seltzer takes a 360 approach to weight loss by creating plans based off an individual's lifestyl Do you lose weight only to gain it back again?

Has chronic dieting slowed your metabolism? Do you have thyroid disease, diabetes or another medical condition that may be impacting your ability to manage your weight? Whatever your unique situation, Dr. Charlie Seltzer is determined to help you meet your weight-loss and fitness goals. His medically supervised weight loss and goal-directed fitness solutions are grounded in the latest scientific research and over 20 years of personal fitness experience. Dr. Seltzer conducts extensive testing that goes well beyond what you would get in a traditional medical practice to uncover issues that may never have been discovered, such as hypothyroidism or hormonal imbalances. He then designs a specific hormone replacement therapy plan to restore your energy and help you take the weight off. Based in Philadelphia and with an active nationwide client roster, Dr. Seltzer is the only physician in the country to be board-certified in Obesity Medicine and certified by the American College of Sports Medicine as a Clinical Exercise Specialist. He has a proven track record of helping people who have struggled for years to lose weight go on to transform their lives. Having lost 70 pounds himself (and maintained it over the past six years), he bases his approach on the proven principle of making small changes over time and incorporating healthy habits into your everyday life. He knows first-hand the frustration you may be feeling and how to overcome barriers to success. With his unique credentials and compassionate, supportive approach, Dr. Seltzer is ideally qualified to help you become lean for life.

09/14/2026

Science should inform your training, not override your experience. Research gives us averages. Your body gives you feedback.

If warm-up sets consistently help you perform better, that matters, even if a study says they aren’t necessary.

Read the research. Test it. Keep what actually works for you.

09/10/2026

We’re stepping outside fitness and medicine for this one because apparently the internet needs an intervention.

No, you’re not beating a chimpanzee in a fight.

It’s not going to square up and box you. And yet there are people who genuinely believe they could win.

So let’s settle it: anyone taking themselves over the chimp? 😂

09/09/2026

Your ChatGPT diploma doesn’t qualify you to give medical advice. Having access to information and being able to confidently repeat it isn’t the same as having the education and expertise to understand it.

That’s where the Dunning-Kruger effect can become especially dangerous in healthcare.

Use AI. Ask questions. Learn. But don’t confuse access to information with medical expertise.

09/08/2026

A 45-minute arm workout might make you tired and sore. That doesn’t automatically make it effective for building muscle.

When the goal is muscle growth, more volume isn’t always better. A few high-quality sets performed with enough effort can accomplish more than piling on exercise after exercise just to feel like you worked harder.

Train for results, not exhaustion.

09/07/2026

“Functional muscle” sounds great but what does it actually mean? Strength built through resistance training doesn’t become useless outside the gym. A stronger muscle is still a stronger muscle whether you’re deadlifting a barbell, picking up a box, or carrying your kid.

So let’s hear the argument: What makes muscle “functional”?

Drop your definition in the comments.

09/04/2026

Seed oils might be one of the most demonized foods on the internet. Can consuming too many calories from fat contribute to weight gain? Of course. But that’s very different from claiming seed oils themselves are inherently unhealthy.

Research consistently shows cardiovascular benefits when saturated fats are replaced with polyunsaturated fats.

So why are seed oils still getting so much hate?

09/03/2026

Can you build “lean muscle” instead of regular muscle? No special workout determines whether the muscle you build is “lean,” “functional,” or anything else. Building muscle and losing body fat are separate goals.

Want more muscle? Train to build it.

Want to look leaner? Reduce body fat.

Fitness doesn’t need to be as complicated as the marketing makes it.

09/02/2026

Your rest period shouldn’t end just because the clock says so. When training for muscle growth and hypertrophy, the goal is to recover enough between sets to maintain performance. Different exercises, loads, and training intensities may require different amounts of rest.

The stopwatch is a tool not the boss.

How long do you typically rest between sets?

09/01/2026

You don’t need to destroy a muscle to make it grow. Soreness and muscle damage can happen after training, but neither should be the goal of your workout.

If you want hypertrophy, focus on what actually matters: progressively exposing the muscle to greater mechanical tension over time.

Stop chasing soreness. Start chasing progression.

08/31/2026

Diet soda causes Alzheimer’s? That headline deserves a closer look. Finding an association between two things doesn’t automatically mean one caused the other. Lifestyle, body weight, existing health conditions, and other variables can completely change how we interpret observational research.

This is why reading beyond the headline matters.

Diet soda: drinking it or avoiding it?

Address

1429 Walnut Street-Suite 401
Philadelphia, PA
19102

Opening Hours

Monday 9am - 5:30pm
Tuesday 9am - 7pm
Wednesday 9am - 7pm
Thursday 9am - 5:30pm
Friday 9am - 5:30pm

Telephone

+12152798376

Website

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