If you’re a Filipino professional dealing with weight gain, rising blood pressure, pre-diabetes, PCOS, fatty liver, or fatigue that won’t quit, you’ve probably already asked the obvious question: what is a low carb diet, and does it actually work?
I asked myself the same thing a few years ago. Here’s everything I’ve learned since, both from the research and from walking hundreds of Filipino clients through it.
A low carb diet means building your meals around three things:
And cutting back on:
The point isn’t “fewer carbs” as some kind of moral victory. Instead, the point is lower insulin, since insulin is the actual driver behind fat storage, insulin resistance, and a long list of the metabolic problems I see in clients every week.
Here’s the chain reaction: you eat carbs, your blood glucose rises, and your pancreas releases insulin to bring it back down.
Insulin on its own isn’t the villain. However, the problem shows up when it stays elevated too often, for too long. Once that happens, chronically high insulin does four things: it stores fat, blocks fat burning, promotes sodium retention (which raises blood pressure), and drives insulin resistance over time.
David Ludwig and Cara Ebbeling laid this out in their carbohydrate-insulin model of obesity, published in JAMA Internal Medicine in 2018. Their argument, in plain terms: a high-carb diet spikes insulin after every meal, which pushes calories into fat storage instead of energy use, which then makes you hungrier and slows your metabolism.
Cut the carbs, and you cut the insulin demand. Lower insulin means your body can finally access stored fat for fuel instead of hoarding it.
I started at 95kg, 5’8″, dealing with the early warning signs myself: rising blood pressure, fatigue that wouldn’t go away, and a gut feeling that something in my body had stopped working the way it should.
My first attempt was what I now call lazy low carb. I dropped rice, cut sweets, ate more protein, and made eggs a daily habit. That worked, just slowly.
The mistake was waiting too long to add intermittent fasting. Once I started a 16:8 fasting window on top of the lower-carb eating, fat loss picked up fast. Twelve months in, I’d lost 27kg. Meanwhile, the cravings that used to run my day disappeared, my energy stopped crashing every afternoon, and my blood markers came back normal.
What changed wasn’t just the number on the scale, it was metabolic. That’s the distinction I try to get every client to understand before we start, because chasing weight loss without fixing the underlying insulin problem is usually why diets fail long term.
So that shift is the entire reason lowcarb.ph exists.
Low carb isn’t something clients discovered on social media last month. Instead, it’s been studied for decades, across weight loss, diabetes, blood pressure, kidney safety, and PCOS.
| Study | What it found |
|---|---|
| Bazzano et al., Annals of Internal Medicine, 2014 | Randomized trial: low-carb dieters lost more weight and improved cardiovascular markers more than low-fat dieters over 12 months |
| Hallberg et al., Diabetes Therapy, 2018 | One-year trial: meaningful HbA1c reduction and reduced diabetes medication reliance on a low-carb protocol |
| Nordmann et al., Archives of Internal Medicine, 2006 | Meta-analysis: low-carb diets improved triglycerides and blood pressure more than low-fat diets |
| Brinkworth et al., Journal of the American Dietetic Association, 2010 | Long-term data: no adverse kidney effects in overweight adults without pre-existing kidney disease |
| Mavropoulos, Yancy, Hepburn & Westman, Nutrition & Metabolism, 2005 | Pilot study: a ketogenic low-carb diet improved weight, testosterone, and insulin markers in women with PCOS |
Taken together, the pattern holds up across every study: lowering carbohydrate intake improves metabolic markers, especially in people who are already insulin resistant.
Based on the clients I’ve guided through this, four groups tend to see the fastest, clearest results.
Overweight professionals, 25 to 55. Sedentary days, high stress, heavy rice intake, and fast food dependency tend to stack up fast in this group. Because of that, low carb usually stabilizes energy first, before the weight even starts moving, and kills the 3pm crash almost immediately.
People with high blood pressure. I’ve watched clients move from 140/90 down into the 120-130/80 range within a few months. Since insulin affects sodium retention and vascular stiffness, lowering it often brings blood pressure down with it.
Pre-diabetics and Type 2 diabetics. Type 2 diabetes is fundamentally an insulin resistance problem, so fewer carbs means less glucose load, which then means less insulin demand.
Women with PCOS. PCOS is closely tied to insulin resistance. As a result, lowering insulin tends to improve ovulation, hormone regulation, weight, and fertility potential.
| Client | Starting weight | Timeframe | Result | Blood pressure change |
|---|---|---|---|---|
| 41-year-old male | 89kg | 6 months | 65kg (24kg lost) | 140/90 to 125/80 |
| 31-year-old female | 75kg | 3 months | 64kg (11kg lost) | Improved hormonal stability |
| 37-year-old male | 95kg | 8 months | 73kg (22kg lost) | 145/90 to 130/80 |
The approaches varied. The first client went from moderate to strict low carb with daily eggs, grass-fed meat, and zero rice. Similarly, the second cut bread, sweets, and processed snacks in favor of protein-first meals and leafy greens. The third took the longest path, moving through lazy low carb into strict keto and eventually a carnivore-leaning approach, but also reported clearer thinking along the way.
| Phase | What it looks like |
|---|---|
| 1. Lazy low carb | Remove rice, corn, sugar, root crops, and bread. Prioritize protein. |
| 2. Moderate low carb | 50 to 100g of carbs a day. |
| 3. Strict keto | Under 30g of carbs a day. For the mechanics of this phase, see how keto works in the body, and for how long to stay here, see how long you should stay on keto. |
| 4. Carnivore + leafy greens | Eggs, grass-fed meat, and green vegetables. Protein-first, no calorie counting. |
| 5. Maintenance | Return to moderate low carb once you hit your goal weight. |
Skip: white rice, pandesal, root crops (kamote, gabi, patatas, cassava), cakes and sweets, processed foods (hotdogs, sausage, meatloaf), and seed oils (canola, sunflower, palm blends, safflower).
Build around: eggs, pork, chicken, beef, fish, kangkong, repolyo, pechay, malunggay, eggplant, spinach, coconut oil, and butter. Almost every vegetable in the Bahay Kubo song qualifies. For the full breakdown by category, see our list of low carb foods in the Philippines.
Low carb doesn’t have to be expensive here. In fact, cutting out junk food usually saves money, not the other way around, once you compare a week of fast food runs against a week of eggs and vegetables from the palengke.
Myth: low carb damages your kidneys. The Brinkworth et al. (2010) data found no kidney damage in healthy individuals without pre-existing kidney disease. High blood sugar does more long-term damage to kidneys than dietary protein does.
Myth: you need rice for energy. Your body runs on three fuels: glucose, fat, and ketones. Fat provides steadier energy without the crash that follows a rice-heavy meal.
Myth: eating fat makes you fat. Insulin drives fat storage, not dietary fat itself. Fat doesn’t spike insulin the way refined carbs do.
Myth: low carb is expensive. Eggs cost less than a fast food meal, and vegetables are cheap and available in any palengke.
Once your body adapts to eating fewer carbs, adding a 16:8 fasting window on top tends to speed everything up: better insulin sensitivity, faster fat burning, sharper focus, and fewer cravings. This combination is what accelerated my own results, and it’s usually where I take clients once the fundamentals are in place. If you’re curious how fasting affects things like autophagy, I cover that in black coffee and fasting on a low carb diet.
Low carb tends to improve more than the scale: blood pressure, blood sugar, energy stability, mental clarity, and confidence. Because of that, I think of this as metabolic rehabilitation, not a diet you go on and off whenever a special occasion comes up.
Not quite. Low carb is the broader category, and keto is one specific, stricter phase inside it, usually under 30 grams of carbs a day. If you want the full picture, read what is keto, and is it safe.
It depends on your phase. Lazy low carb has no strict number, moderate low carb runs 50 to 100g a day, and strict keto stays under 30g.
Yes. Eggs, local vegetables, and everyday proteins are usually cheaper than the fast food and processed snacks they end up replacing.
Some people do, especially in the first few days. It usually comes from lower sodium and water, not from the diet being wrong for you. Add extra salt to your food, drink enough water, and it typically clears up within a week.
It varies. My case studies above ranged from 3 to 12 months depending on starting point and consistency, though most clients notice energy and craving changes within the first two to three weeks.
