Anew type of drug is generating excitement among the rich and the beautiful. Just a jab a week, and the weight falls off.
Elon Musk swears by it; influencers sing its praises on TikTok; suddenly slimmer Hollywood starlets deny they have taken it. But the latest weight-loss drugs are no mere cosmetic enhancements. Their biggest beneficiaries will be not celebrities in Los Angeles or Miami but billions of ordinary people around the world whose weight has made them unhealthy.
Antibiotic resistance is not new – it existed long before people used drugs to kill bacteria
Treatments for weight loss have long ranged from the well-meaning and ineffective to the downright dodgy. The new class of drugs, called glp-1 receptor agonists, seems actually to work. Semaglutide, developed by Novo Nordisk, a Danish pharmaceutical firm, has been shown in clinical trials to lead to weight loss of about 15%. It is already being sold under the brand name Wegovy in America, Denmark and Norway and will soon be available in other countries; Ozempic, a lower-dose version, is a diabetes drug that is also being used “off label” for weight loss. A rival glp-1 drug, made by Eli Lilly, an American firm, is due to come on sale later this year and is more effective still. Analysts think the market for glp-1 drugs could reach $150bn by 2031, not far off the market for cancer drugs today. Some think they could become as common as beta blockers or statins.
The drugs could not have arrived at a better time. In 2020 two-fifths of the world’s population were overweight or obese. By 2035, says the World Obesity Federation, an ngo, that figure could swell to more than half, with a staggering 4bn people overweight or obese. People everywhere are getting fatter. The populations putting on pounds the fastest are not in the rich West but in countries like Egypt, Mexico and Saudi Arabia.
These trends are alarming because obesity causes a host of health problems, including diabetes, heart disease and high blood pressure, as well as dozens of illnesses such as stroke, gout and various cancers. Carrying extra weight made people more likely to die of covid-19. And then there is the misery that comes from the stigma associated with being fat, which affects children in schools and playgrounds most cruelly of all.
The consequences of obesity for the public purse and the wider economy are large. According to modelling by academics the annual cost to the world economy of excess weight could reach $4trn by 2035 (2.9% of global gdp, up from 2.2% in 2019). That includes both spending on health care and working time lost to illness and premature deaths tied to obesity.
The world’s expanding waistlines are not a sign of the moral failure of the billions who are overweight, but the result of biology. The genes that were vital to helping humans survive winters and famine still help the body cling on to its weight today. The superabundance of hard-to-resist processed foods in recent decades has brought greater convenience and lower costs, but also triggered overeating just as lifestyles became more sedentary. Once the fat is on, the body fights any attempt to diet away more than a little of its total weight. Despite the $250bn that consumers around the world spent on dieting and weight loss last year, the battle to get slim was largely being lost.
The new obesity drugs arrived by serendipity, after treatments meant for diabetics were observed to cause weight loss. Semaglutide mimics the release of hormones that stimulate a feeling of fullness and reduce the appetite. They also switch off the powerful urge to eat that lurks inside the brain, waiting to ambush even the keenest dieter.
With the jabs already in high demand, investors are nearly as giddy as newly slim users. The market capitalisation of Novo Nordisk, the firm at the front of the gold rush, has doubled in two years, to $326bn, making it the second-most-valuable listed drugmaker in the world. Analysts expect half of obese Americans who seek help to be on glp-1 drugs by the turn of the decade. But, as with any new medicine that holds so much promise for so many, there are uncertainties. Two big ones will be safety and affordability.
Quanlim Life
PLEASE think about your HEALTH before you start using all these "drugs"
