Inclusion Criteria:

• Aged 50-80 years
• General healthy status
• Body Mass Index (BMI)18.5-35 kg/m2

Exclusion Criteria:

• Taking anti-inflammatory drugs (e.g., aspirin, warfarin, ibuprofen)
• Having sign of infections or acute inflammation (e.g., fever, chills, sore throat, nasal congestion, moderate-severe pain, swelling-redness)
• Received antibiotics within the past 3 months
• Taking dietary supplements (e.g., vitamins, minerals) at high doses (e.g., more than 200% of the UK's reference nutrient intakes)
• Taking hormone replacement therapy, if you are menopausal
• Had major surgery (head, heart, chest, abdomen) within the past 6 months.
• Having plan to start to a restricted diet/ changing dietary pattern or lose weight.
• Diagnosed with neurodegenerative diseases (e.g., Dementia, Alzheimer's, Parkinson's, current stroke)
• Diagnosed with psychotic disorders (e.g., schizophrenia, bipolar depression, eating disorder)
• Diagnosed with cardiovascular disease, diabetes, hyperlipidemia, hypertension (blood pressure>140/90 mmHg), active cancer, liver, or kidney diseases.
• Taking medication to lower blood fats (e.g., statins, fibrates) or to stabilise blood glucose (e.g., acarbose, metformin or sulfonylureas) or lower blood pressure.
• Unable to complete the cognitive function tasks for any reason (i.e., visual impairments, hearing loss)
• If you have a peacemaker
• If you have bleeding disorders or blood related diseases (anaemia, thalassemia, thrombosis, embolism)
• Heavy smoker
• Heavy alcohol drinking (> 14 units/week) or a history of alcohol/substance abuse
• Allergies, hypersensitivity, or food intolerances (rice, eggs, soy sauce, vegetable oil)