Health headlines: June 2025

The latest in medical and wellness news you need to know.

Author

Umayya Theba
June 30, 2025

How one keto trial set off a new war in the nutrition world

Whenever the keto diet is discussed, there’s going to be beef. But this time, it’s different. A new research paper on the diet’s effects has whipped the nutrition field into a frenzy. Researchers behind the study say it supports keto’s health credentials; opponents claim the research shows the exact opposite. 

All the risks of a 'carnivore diet' after heart specialist issues stark warning over 'healthy' 35-year-olds having heart attacks

Health experts have warned people following the 'carnivore diet' about the possible dangers, particularly among younger people who think they're not old or unhealthy enough to suffer potentially fatal symptoms.

2 foods that can help reduce the risk of dementia

The brain is the control centre of the body. It keeps our heart beating and lungs breathing, and allows us to move, think, and feel. While cognitive function can naturally slow down later in life, certain lifestyle factors, like diet, can impact our risk of age-related cognitive decline and dementia.

Interestingly, research estimates that over 75% of the brain changes that lead to dementia could be connected to lifestyle. What’s more, studies suggest that eating certain foods can reduce the risk of developing Alzheimer’s disease by up to 53%.

Dementia risk can be slashed by eating 'single most important' food

Dementia risk can be influenced by lifestyle choices, with research indicating up to 45 per cent of cases may be preventable through lifestyle change. Diet is one pivotal factor; making certain dietary alterations can considerably slash the likelihood of developing dementia.

A specific food has been dubbed the "single most important" thing you can consume to help lower your risk of dementia, say experts. This food is packed with omega-3 fatty acids that could help shield the brain.

Influence vs. Evidence: The science supporting seed oils

Some wellness influencers warn against consuming seed oils, blaming them for a range of health problems and characterising them as toxic. Scientific studies consistently show otherwise.

As a nutrition scientist, Marklund researches how different fats can affect chronic disease. According to Marklund and other nutrition researchers, seed oils have been demonised based on misunderstandings of how they’re made and how the human body uses them, as well as their ubiquity in ultra-processed foods.