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How to Navigate Overwhelming Nutrition Advice Online

Finding nutrition advice online can be daunting, especially when statements seem contradictory (like “fat is harmful!” versus “fat is beneficial!”). It’s wise to seek advice that’s based in credible science and shared by registered dietitians or certified healthcare professionals. Not everyone who eats is a nutrition expert.
Recommendations should be practical and sustainable over the long term. If advice sounds extreme or too promising, it’s likely not reliable. At Virta, our focus is on nutrition strategies that have been clinically verified to enhance metabolic health and quality of life while providing stable weight loss.
What Happens When You Try Extreme Low-Calorie Diets

In my experience working with various individuals, many have attempted different dietary methods, including severely low-calorie diets – sometimes as little as 1,200 calories daily or less. While such diets might lead to short-term weight loss, maintaining them can be challenging due to persistent hunger, fatigue, and disappointment when they aren’t sustainable. Often, any weight lost returns, sometimes exceeding the starting weight.
These diets are rarely sustainable, which leads people to blame themselves rather than the diet. At Virta, we take a different approach. Instead of deprivation, we help people eat satisfying, nutrient-dense meals that improve blood sugar and weight without hunger. This shift helps people rebuild confidence and find success that lasts, while still finding food enjoyable.
Is the 1,200-Calorie Diet Safe for You?

For most adults, 1,200 calories is considered the lower end of daily intake, and while it may be appropriate in some medical contexts under supervision, it generally isn’t enough to meet basic energy and nutrient needs. The bigger concern is when people dip below 1,200 calories or sustain this level long-term without oversight – that’s when risks grow with regard to inadequate energy and nutrient intake.
At Virta, we focus less on chasing a specific calorie number and more on improving and optimizing metabolic health through sustainable nutrition.
The Health Risks You Need to Know About

Chronic calorie deprivation can cause:
- Fatigue and low energy
- Irritability and mood changes
- Nutrient deficiencies
- Hair loss
- Hormonal imbalances
- Bone loss over time
It can slow metabolism, making weight loss harder to sustain, and the psychological toll of long-term restriction often fosters cycles of yo-yo dieting and a damaged relationship with food.
How Your Calorie Needs Are Determined

There are equations that estimate calorie needs based on age, biological sex, body size, and activity level. But those numbers are just a starting point, and we can make adjustments based on one’s goals, overall health status, and daily routines. Someone that is more active will have higher calorie needs, and as we age, our calorie needs generally decrease.
Warning Signs You’re Eating Too Few Calories

Some red flags include:
- Constant fatigue or low energy
- Feeling cold all the time
- Irritability
- Hair or nail changes
- Poor sleep
- Difficulty concentrating
- For women, loss of menstrual cycles
If you notice these symptoms, I would recommend seeking professional guidance (PCP and/or registered dietitian) and consider re-evaluating your diet.
When 1,200 Calories Might Be Appropriate

There may be some situations where 1,200-calorie (or less) diets are appropriate, but generally these are followed under close medical supervision for short periods of time. For most people, especially without medical oversight, consuming 1,200 calories or less long-term isn’t appropriate.
The real risk isn’t 1,200 calories itself, but ongoing calorie deprivation that drops intake below that level or extends it beyond what’s safe. At Virta, we’ve shown that people can lose weight and reverse type 2 diabetes without needing to resort to such restrictive approaches.
A Better Approach to Weight Loss

Rather than focusing on eating less (and exercising more), which often leads to a restrictive mindset and an unhealthy relationship with food, I encourage people to shift their approach to eating differently and make small, sustainable changes. I like to frame it around what we can add more of – like non-starchy vegetables – rather than just what we’re taking away.
Swaps can also be powerful: replacing refined carbs and processed foods with whole, nourishing alternatives. It’s also important to focus on foods that fuel you and help your body feel good, like lean proteins and healthy fats.
Looking for more easy ways to lose fat? Here’s How Long Your Walking Workout Should Be To Shrink Belly Fat.