Glamorous ABC star, 57, shares sizzling swimsuit pics to show off results of wellness overhaul

Age is just a number… and Dr Jennifer Ashton is proving that after showcasing her incredible transformation in a saucy swimsuit snap.

The glamorous 57-year-old, a double board-certified OB-GYN and obesity medicine physician who served as the chief medical correspondent for ABC News and Good Morning America, showed off her jaw-dropping physique in a recent Instagram post.

Ashton shared a side-by-side comparison of herself in black one-piece swimsuits, marking one as December 2025 and the other April 2026.

The medical expert explained in the caption she was the same weight in both pictures.

However, she said she felt more confident about herself and her figure in the most recent picture, in which you could see that her arms and legs were noticeably toned.

‘December 2025 to April 2026. Same weight. This is why I don’t prioritize the number on the scale,’ she wrote.

‘I’m happy with how I look in both photos, but with the second photo, but I’m even happier with how I feel. Honestly, at 57, that means more to me than it would have 20 years ago.’

Ashton explained that over the past four months, she had done a ‘wellness experiment’ which taught her to embrace aging rather than trying to look younger.

‘This is what the past four months of my wellness experiment looks like for me. Not perfection and definitely not trying to look 35, which would be both exhausting and, let’s be honest, anatomically suspicious,’ she joked. 

‘That’s why I’m transitioning to one piece swimsuits… I think my bikini days are dwindling lol. [But] this phase is not maintenance, and it is definitely not a plateau. It’s progression.’

As a part of her routine, the doctor said she focused on a number of things, including stronger legs, better metabolic conditioning and building muscle, flexibility and stamina.

She also said she started prioritizing increasing sleep and recovery.

The medical expert added that there was no single workout that helped her achieve her results, but rather, it came from being consistent with herself.

‘None of it came from one magic workout, a supplement stack, one hack or one dramatic January reinvention,’ she said.

‘It came from the boring, challenging things, done consistently.’

In addition to staying consistent, she explained that she was also open-minded about doing hard training – such as weight lifting and sprint interval training.

She also said she started using the assault bike, which she dubbed the most effective fitness device ‘ever’ created and was more mindful about intentional recovery, which she added was just as important as exercise.

Ashton also committed to nutrition, eating more protein and fiber and tried to get more sleep.

‘Turns out I needed an additional hour,’ she quipped.

Ashton said she hopes her transformation helps women over 50 understand that you can still be strong and work on your health as you age.

‘This stage of life is not the beginning of decline by default. But it does require a different strategy,’ she explained.

Ashton said her transformation led to her developing the Ajenda Wellness Experiment, which she described as a science-backed, structured system for strength, metabolic health, nutrition, flexibility, recovery and community. 

‘No arrogance or unrealistic promises. No blame or ‘lowering the bar’ of what’s possible,’ she declared.

‘Just an honest experiment in vitality when we stop focusing on burning and start concentrating on building,’ she said.

‘At 57, I don’t want to look 37. I want to feel strong, steady, more mobile, more capable, and hard to knock over.’

There has been a growing body of research that suggests lifting a dumbbell – strength training – may be the most effective form of exercise for living a longer, healthier life.

A major study followed more than 5,000 women aged 63 to 99 for eight years and found those with greater muscle strength had a 33 percent lower risk of death within that time frame – regardless of how physically active they otherwise were.

It found that even women who didn’t get the recommended 150 minutes a week of aerobic exercise lived longer, if they were stronger from weight training.

Professor Michael LaMonte, who led the study at the University of Buffalo, said strength training should be part of public-health messaging on exercise for older adults.

This research, published in the medical journal JAMA Network Open, complements previous evidence that picking up a dumbbell at any age can add years to your life.

A study in the American Journal of Preventive Medicine in 2022 found any amount of resistance training reduced the risk of dying from heart disease by 19 percent and cancer by 14 percent.

But the biggest reduction in risk of dying from any cause, 27 percent, came at around 60 minutes of weight training a week.