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Celsius caffeine vs Red Bull: which energy drink is really better for your body?

Susan Carter, MD: Endocrinologist & Longevity expert

Nov 23, 2025 · 14 min read

Celsius and Red Bull both promise fast energy, but their caffeine, sugar, and ingredient profiles hit your heart, brain, and gut very differently. Here is how to compare them safely and choose what actually fits your health. “Energy drinks are not automatically ‘bad,’ but they are concentrated caffeine delivery systems layered with sugar and stimulants. […]

Are perfect bars healthy or just clever marketing?

Susan Carter, MD: Endocrinologist & Longevity expert

Nov 22, 2025 · 15 min read

Perfect Bars promise whole-food ingredients, protein, and “real food” appeal. Here is what the research on sugar, fats, protein, and ultra-processed snacks says about whether Perfect Bars are actually healthy for everyday use. “Perfect Bars can fit into a healthy diet, but they are not a free pass. From a metabolism and longevity perspective, you […]