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Researchers say the experimental drug TOFA may provide a brand new strategy to fats loss by rising power use fairly than suppressing urge for food.
Present GLP-1 drugs corresponding to semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) primarily work by lowering urge for food and reducing calorie consumption.
The following massive title in weight-loss medication might not be one other urge for food suppressant. A brand new experimental compound referred to as TOFA is attracting consideration after researchers discovered that it helped overweight mice lose physique fats whereas preserving lean muscle mass, with out making them eat much less.
The findings are notably fascinating at a time when medication corresponding to Ozempic and Wegovy have modified weight problems therapy. Nonetheless, the race is now shifting in direction of an vital query: can folks lose fats with out shedding muscle together with it?
Printed in Science Advances, the brand new examine suggests TOFA, quick for 5-tetradecyloxy-2-furoic acid, might provide a very totally different strategy to weight reduction. Nonetheless, there’s one main catch. To date, the compound has solely been examined in animals, not people.
What’s TOFA and How Does it Work?
TOFA, quick for 5-tetradecyloxy-2-furoic acid, is an oral compound first studied many years in the past as an inhibitor of enzymes concerned in making fat. Researchers on the College of California, Berkeley, have now proven that it does greater than block lipid manufacturing. It additionally prompts mobile receptors that swap on genes serving to cells take up and burn fats for power.
In experiments printed within the journal Science Advances, overweight mice given TOFA twice each day for 4 weeks misplaced a median of 18 % of their physique weight. Meals consumption stayed the identical, bodily exercise didn’t improve, and physique temperature remained unchanged. But whole-body power expenditure rose by as a lot as 18 %. Many of the weight misplaced got here from fats, with little to no discount in lean muscle mass.
Ozempic vs TOFA: What’s Completely different?
Present GLP-1 drugs corresponding to semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) primarily work by lowering urge for food and reducing calorie consumption. Whereas extremely efficient for weight reduction, they will generally result in lack of muscle together with fats, and stopping the medication usually brings weight regain.
TOFA targets the opposite aspect of the power stability equation. As an alternative of creating folks or animals eat much less, it will increase the quantity of power the physique burns. Senior researcher Anders Näär has described physique weight as responding to 2 levers: taking in fewer energy or spending extra power. GLP-1 medication primarily pull the primary lever; TOFA goals on the second.
That is the place the findings change into notably intriguing. Within the animal experiments, TOFA-treated mice misplaced vital physique weight and fats mass with no statistically vital discount in lean muscle mass.
Researchers additionally discovered enhancements in fasting blood glucose, insulin ranges and insulin sensitivity. The compound confirmed potential advantages for irregular triglyceride ranges and fatty liver-related illness too, suggesting that its results might transcend the weighing scale.
What Different Advantages Does TOFA Provide?
Past fats loss, handled mice confirmed improved insulin sensitivity and higher blood sugar management. Triglyceride ranges dropped, and indicators of fatty liver illness improved, together with lowered liver fats, irritation and fibrosis. These metabolic positive factors occurred with out the rise in blood triglycerides that has restricted another medication in the identical chemical class.
When researchers mixed decrease doses of TOFA with semaglutide or tirzepatide, the outcomes have been stronger than both therapy alone. The pairs produced larger reductions in physique weight, higher glucose management, decrease insulin ranges and improved triglyceride readings. Scientists view TOFA as probably complementary fairly than a direct substitute for present medicines.
Is TOFA Prepared-To-Use for Individuals?
The findings to this point come solely from animal research. Security, optimum dosing and effectiveness in people haven’t but been established. Medical trials can be wanted earlier than any conclusions will be drawn about its use in folks. Researchers have famous that the compound’s twin motion on lipid synthesis and power expenditure seems distinctive, however translation from mice to people is rarely assured.
So, goodbye Ozempic? Not fairly. However whats up to a brand new risk. If TOFA’s results translate to people, future weight problems therapy might focus not solely on consuming much less, but additionally on serving to the physique burn extra power whereas defending the muscle that folks want to remain robust.
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Ask News18TOFA is an experimental drug that helps overweight mice lose physique fats whereas preserving lean muscle mass by rising power use, fairly than suppressing urge for food. In distinction, present GLP-1 drugs primarily scale back urge for food and might result in muscle loss if not mixed with train. Stopping GLP-1 medication may lead to weight regain.
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August 29, 2026, 13:48 IST
