science

Met-Rx

Met-Rx is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Met-Rx rather than just read about it. In short: MET-Rx is an American brand of nutritional supplements originally produced by Met-Rx, Inc., a California company started by Scott Connelly and sold several times since. The brand created a category of bodybuilding supplements called meal replacement powders or MRPs.

Key takeaways

Met-Rx belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Met-Rx to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Met-Rx from memory before moving on to harder problems.

Reference excerpt

MET-Rx is an American brand of nutritional supplements originally produced by Met-Rx, Inc., a California company started by Scott Connelly and sold several times since. The brand created a category of bodybuilding supplements called meal replacement powders or MRPs. It was also involved in the androstenedione controversy in the late 1990s.

Company Created by Scott Connelly, an anesthesiologist, the original MET-Rx product was intended to help prevent critically ill patients from losing muscle mass. Connelly's product was marketed in cooperation with Bill Phillips, and the two began marketing to the bodybuilding and athletic communities, launching sales from the low hundreds of thousands to over $100 million annually. Connelly sold all interest in the company to Rexall Sundown for $108 million in 2000. MET-Rx is owned by NBTY.

Products

Original MET-Rx MRP The original MET-Rx meal replacement product came in two canisters—one labeled MET-Rx "base" and the other MET-Rx "plus". The instructions were to take two scoops of the plus and one scoop of the base and mix them in milk or water. MET-Rx's meal replacements and protein powders contain a proprietary blend (known as "Metamyosyn") which consists of ingredients such as whey protein, calcium caseinate, egg albumen and milk protein isolate, combined with maltodextrin, vitamins, minerals and added amino acids. As the product grew more popular, it was released as one formula combining the "base" and "plus" while removing the micellar casein component. As a result, the original Metamyosyn blend is no longer used in MET-Rx products, as their ingredients do not contain micellar casein. An NBC DateLine broadcast on October 6, 1996, entitled "Hype in a Bottle" investigated MET-Rx USA, Inc. The report revealed that MET-Rx had failed to provide published peer-reviewed documentation to substantiate its advertising claims. In October 1993, the "MET-Rx Substantiation Report" was provided to David Lightsey of the National Council Against Health Fraud. The report claimed association with Cooper Clinic in Dallas, Texas. The report noted that several Dallas Cowboys players had gained an average of 2.5 to 3 pounds of lean body mass weekly for six weeks when using a MET-Rx product—an obvious red flag. Cooper Clinic was contacted of possible misrepresentation. The clinic issued a cease and desist letter to Met-Rx from the Cooper Clinic president and medical director. In February 1995, the Penn State Sports Medicine Newsletter (3;6) published a report titled "Is It Real or Is It Met-Rx?" that concluded, "MET-Rx ... claims of fat loss and increased muscle mass have not been proven by scientifically accepted methods". The National Council Against Health Fraud discussed Met-Rx in several issues of their newsletter, pointing out that the scientific claims of the manufacturer were not based on scientific studies but on the endorsement on celebrities.

Marketing MET-Rx features a wide variety of television sponsorships, such as the MET-Rx World's Strongest Man competition. As of 2004, the company claimed the brand was endorsed by 50 top athletes. MET-Rx also sponsors dozens of athletes, bodybuilders, and celebrities. In early interviews and promotional materials, Connelly marketed himself as a 1973 Harvard Medical School graduate, and claimed he was on the faculty of Stanford Medical School between 1979 and 1986. In reality, Connelly was only at Harvard as a post-grad "special student" in the 1973–74 academic year. He then got his Doctor of Medicine in anesthesia from Boston University School of Medicine in 1978 and did a one-year Stanford fellowship in 1981. Connelly was an unpaid clinical instructor and was never part of the full-time faculty at Stanford.

Worked examples

Example 1 — a first encounter with Met-Rx

Start with the simplest possible case. Write down what Met-Rx claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Met-Rx before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Met-Rx ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Met-Rx

In research: Met-Rx appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Met-Rx in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Met-Rx is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bodybuilding supplements, Dietary supplements, so understanding it makes those chapters shorter.
In everyday life: Look for Met-Rx outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Met-Rx in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Met-Rx means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Met-Rx out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Met-Rx in simple terms?

Why does Met-Rx matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Met-Rx?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Met-Rx.