It’s no longer just Californian clients asking for these things. Now, I’d say around 80% of the clients are prioritizing healthy eating, and a growing number are focused on longevity, whether that’s by tracking macros, counting calories<\/a>, or following a Mediterranean diet. It’s also becoming more common for chefs to work alongside nutritionists and personal trainers to help families meet their goals.<\/p>\n Here are five food upgrades I’ve seen ultrawealthy families prioritize to live longer and healthier lives.<\/p>\n Have you worked for a billionaire? Business Insider wants to hear your story. Contact this reporter at jzitser@businessinsider.com<\/a>.<\/p>\n 1. Use high-quality olive oil<\/strong><\/p>\n As a private chef, olive oil was always my first choice for cooking and dressings. It’s a big part of the Mediterranean diet<\/a>, which many clients now ask us to follow for longevity reasons.<\/a> Excellent extra-virgin olive oil<\/a> is more expensive than sunflower oil or other cooking oils, but I think it’s worth it.<\/p>\n 2. Choose wild, line-caught fish<\/strong><\/p>\n We always try to source wild, line-caught fish, such as sea bass. It isn’t always possible, depending on where you are, and sometimes it’s very expensive, but it’s something I consider very important.<\/p>\n We also pay attention to how often we serve certain fish, such as tuna, especially when cooking for children, because you need to be mindful of mercury levels<\/p>\n 3. Choose grass-fed and free-range meat<\/strong><\/p>\n When I buy meat, including when shopping for my own family, I always look at where it came from and how it was raised. You want to go for grass-fed beef and free-range poultry.<\/p>\n It’s a small step in the right direction.<\/p>\n 4. Buy organic fruit and vegetables that are in season<\/strong><\/p>\n