Donald Trump's 80th birthday dinner has reignited scrutiny of the US president's health after a lavish, calorie‑heavy menu shared online drew fresh criticism from his own Health and Human Services Secretary, Robert F. Kennedy Jr., who has previously branded Trump's diet 'unhinged' and 'poisonous'. The meal, revealed on Instagram by Bettina Anderson, wife of Donald Trump Jr., was served at a private celebration in June and quickly drew attention …