Weight loss in middle age improves heart health; PCOS linked to Alzheimer’s risk

A University College London study followed 6,000 people born in 1958. Researchers found that those who lost 5% of their weight in their 40s and 50s had similar cholesterol, blood pressure, and inflammation levels by age 62 as people who had always been healthy weight. The study used body mass index data and measured cardiovascular markers. The authors said modest weight loss can reverse some age‑related health decline.

The researchers noted that losing just 5% of body weight may reduce inflammation and lower stroke risk. They said the change could improve quality of life and reduce heart disease risk. The study suggested prevention efforts should target people in their 50s. The lead author, Charis Bridger‑Staatz, said it is never too late to start making changes.

A review published in the Journal of the Endocrine Society examined studies on polyendocrine metabolic ovarian syndrome (PMOS), formerly PCOS. The review found that metabolic conditions associated with PMOS, such as insulin resistance, obesity, type 2 diabetes, and high cholesterol, may explain a potential link to Alzheimer’s disease. The authors searched PubMed for studies through 2025. They identified mild differences in brain structure and function in people with PMOS.

The review noted that differences were less pronounced when people with PMOS were compared to metabolically healthy controls. The authors suggested that underlying metabolic issues may play a key role. They said the review does not prove that PMOS causes Alzheimer’s disease. The review called for more research.

Both studies highlight the importance of metabolic health for long‑term outcomes. They show that small lifestyle changes can have significant benefits. They also show that metabolic disorders can affect both heart and brain health.