Following the Princess's disclosure about undergoing cancer treatment, nearly 100,000 visits were made to Macmillan's information and support pages.
This represented a 10% rise compared to the same period last year, making it the highest weekend figure since at least the beginning of the Covid lockdown in March 2020.
A similar uptick in site traffic occurred in February following King Charles's cancer diagnosis, with almost 50,000 visits to the same pages in a single day.
Macmillan Cancer Support, whose patron is the King, mentioned that the Princess and the King's openness about their cancer battles is aiding others in seeking support.
Gemma Peters, the charity's CEO, emphasized the importance of raising awareness about cancer-related concerns and encouraging those who may be worried to seek help from their GPs.
In a personal message released on Friday, the 42-year-old Princess shared details of her cancer diagnosis post abdominal surgery in January, stating that she had started chemotherapy and prioritized informing her three young children about her condition.
Her decision to speak out has been lauded by cancer charities and patients, prompting Macmillan to offer guidance on discussing cancer with children.
The NHS national clinical director for cancer, Prof Peter Johnson, commended the Princess's bravery in speaking out, emphasizing the importance of early detection in improving chances of successful treatment.
Cancer Research UK also saw a surge in website traffic post the Princess's announcement, underscoring the significance of public figures sharing their cancer experiences.
NHS England witnessed a spike in searches for information on melanoma skin cancer following Sarah, Duchess of York's diagnosis in January, further highlighting the impact of high-profile cases in raising cancer awareness and encouraging early medical attention.